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CURRICULUM VITAE Niko Papanikolaou GENERAL INFORMATION PERSONAL DATA: Address: The University of Texas Health Science Center San Antonio Department of Radiation Oncology 7703 Floyd Curl Drive MC 7889 San Antonio, TX 78229 Phone Number: (210) 450-5664 Fax Number: (210) 450-1076 Email Address: [email protected] EDUCATION: Year Degree Discipline Institution/Location 1994 PhD Medicine University of Wisconsin, Madison, WI 1991 MS Medical Physics University of Wisconsin, Madison, WI 1989 BS Physics University of Athens, Athens, Greece ACADEMIC APPOINTMENTS: 12/2005 - Present Professor and Chief, Division of Medical Physics The University of Texas Health Science Center at San Antonio, Department of Radiation Oncology and Radiology, San Antonio, TX 05/2001 - 10/2005 Associate Professor and Chief, Division of Medical Physics University of Arkansas for Medical Sciences, Department of Radiation Oncology, Little Rock, AR 03/2000 - 05/2001 Associate Professor Emory University School of Medicine, Department of Radiation Oncology, Atlanta, GA 09/1995 - 03/2000 Assistant Professor University of Kentucky, Department of Radiation Medicine, Lexington, KY NON-ACADEMIC APPOINTMENTS: 11/2005 - 12/2007 Director, Radiation Therapy Cancer Therapy and Research Center, San Antonio, TX 01/1994 - 09/1995 Senior consultant ADAC/Geometrics, Madison, WI CERTIFICATION AND LICENSURE: Board Certification Description/Agency Status Date Acquired Number Expiration 11/1997 P2071 Date Acquired Number Expiration CPR-Basic Life Support - American Heart Certified Association 01/2007 n/a n/a Certified Gamma Knife User - University of Certified Pittsburgh 08/2001 n/a n/a Therapeutic Radiology - American Board of Certified Radiology n/a Certification Description/Agency Status License to Practice Description/Agency Status Date Acquired Number Expiration Texas Medical Board Certified 01/2006 MP0593 n/a State of Kentucky Certified 10/1995 n/a n/a HONORS AND AWARDS: 07/2009 Fellow of the American Association of Physicists in Medicine 05/2008 Fellow of the American College of Medical Physics 07/2007 Best Doctors in San Antonio: Published in Listing of Best Doctors of San Antonio, TX. 03/2006 Excellence in Teaching, Mexican Federation in Medical Physics 04/2005 Best Doctors in Little Rock: Published in Listing of Best Doctors of Little Rock, Arkansas. 04/2004 Best Doctors in Little Rock: Published in Listing of Best Doctors of Little Rock, Arkansas PROFESSIONAL DEVELOPMENT: Clinical Date Description 05/26/2007 - 05/29/2007 Adaptive Radiotherapy and Imaging in Radiation Oncology, Various courses offered at the American College of Medical Physics annual meeting 05/01/2006 - 05/05/2006 Image-guided Radiation Therapy, Various courses offered at the American College of Medical Physics annual meeting 11/15/2005 - 03/31/2008 Radiation Oncology Grand Rounds, University of Texas Health Science Center at San Antonio - Various presentations on multidisciplinary management of cancer, including imaging, intensity-modulated radiotherapy, imageguided radiotherapy, gated radiotherapy 05/01/2005 - 05/05/2005 Radiation Protection and Shielding Calculation, Various Courses offered at American College of Medical Physics annual meeting 09/01/2003 - 09/05/2003 Real-time Image-based Interstitial Brachytherapy for Prostate Cancer, University of Quebec 03/01/2003 - 03/04/2003 Respiratory Gated Radiotherapy, Medical College of Virginia - Training course in gated radiotherapy 04/01/2002 - 04/05/2002 Clinical Implementation of Image-Guided Tomotherapy Treatments, University of Arkansas for Medical Sciences 08/06/2001 - 08/09/2001 Gamma Knife Training, University of Pittsburgh 05/01/2001 - 10/01/2005 Radiation Oncology Grand Rounds, University of Arkansas for Medical Sciences - Various presentations on multidisciplinary management of cancer, including imaging, intensity-modulated radiotherapy, image-guided radiotherapy, gated radiotherapy 03/01/2000 - 05/01/2001 Radiation Oncology Grand Rounds, Emory University Various presentations on multidisciplinary management of cancer, including imaging, intensity-modulated radiotherapy, image-guided radiotherapy, gated radiotherapy 09/01/1995 - 02/01/2000 Radiation Oncology Grand Rounds, University of Kentucky Various presentations on multidisciplinary management of cancer, including imaging, intensity-modulated radiotherapy, image-guided radiotherapy, gated radiotherapy C.E. Units/Hours 18.00 / 36.00 18.00 / 36.00 36.00 / 72.00 18.00 / 36.00 24.00 / 24.00 24.00 / 32.00 20.00 / 40.00 30.00 / 40.00 36.00 / 72.00 36.00 / 72.00 36.00 / 72.00 Research Date 08/01/2006 Description Course on How to Apply for NCI Grants, American Association of Physicists in Medicine annual meeting 07/01/2005 Course on Grant Writing, American Association of Physicists in Medicine annual meeting 03/02/2005 - 03/30/2005 How to plan and prepare a successful grant application, A C.E. Units/Hours 2.00 / 2.00 2.00 / 2.00 5.00 / 5.00 five part Lecture and Interactive Workshop series presented by the office of grants and scientific publications at University of Arkansas for Medical Sciences 09/01/2004 - 09/03/2004 Grant Writing Strategies, University of Arkansas for Medical Sciences 05/01/2001 - 10/01/2005 Radiation Oncology Research Conference, Various lectures in research for treatment planning, dose calculation algorithms, image science and intensity modulated radiotherapy at University of Arkansas 12.00 / 24.00 25.00 / 25.00 Teaching Date Description 05/01/2004 - 05/05/2004 Teaching and Quality Assurance, Various courses in teaching techniques, curriculum design and development of class evaluations offered at University of Arkansas College of Allied Health Professions C.E. Units/Hours 18.00 / 36.00 TEACHING COURSE BASED TEACHING: Date Course Name Level Role 01/2006 - Present RADI6031 Phys Measure Radiotherapy Graduate Course Director 01/2006 - Present RADI6033 Advanced Radiotherapy Graduate Co-Course Director 01/2006 - Present RADI6035 Radiotherapy Clin Pract Graduate Course Director 01/2006 - Present RADI6097 Research Graduate Co-Teacher 09/1995 - 02/2000 RAS 651 - Advanced Laboratory in Diagnostic Imaging Physics Graduate Instructor 09/1995 - 02/2000 RAS 710 - Radiation Sciences Seminar Graduate Course Director 09/1995 - 02/2000 RM 601 - Advanced Radiation Dosimetry Graduate Co-Teacher 09/1995 - 02/2000 RM 649 - Physics of Radiation Therapy Graduate Co-Teacher OTHER TEACHING: Group Instruction Date Description Institution 04/2006 - 04/2006 Visiting professor Klinikum Offenbach 01/2006 - Present Medical Dosimetry Certificate Program Cancer Therapy and Research Center at UTHSCSA 01/2006 - Present Medical Residency Physics Course University of Texas Health Science Center San Antonio # Students 10 10 08/2004 - 11/2005 Medical Dosimetry Bachelor of Science program University of Arkansas for Medical Sciences 8 05/2001 - 11/2005 Radiation Therapy Technology School Baccalaureate Program University of Arkansas for Medical Sciences 60 03/2000 - 05/2001 Medical Residency Physics Course Emory University 7 03/2000 - 03/2000 Visiting professor Institut Marie Curie and Philips Medical Systems 12 06/1999 - 06/1999 Visiting Professor University of Patras 16 08/1995 - 12/1999 Radiation Oncology Residency Physics Course University of Kentucky Medical Center 24 08/1995 - 12/1999 Radiation Therapy Technology Program University of Kentucky Medical Center 40 . 07/1994 - 02/2000 3D Treatment Planning Algorithms ADAC Laboratories in Radiation Therapy 180 Individual Instruction Date Description Institution # Students 05/2001 - 11/2005 Medical Physics Residency Program University of Arkansas for Medical Sciences 2 03/2000 - 05/2001 Clinical Rotation in Therapeutic Radiology Emory University and Georgia Institute of Technology 2 09/1995 - 02/2000 Clinical Practicum in Radiation Therapy Physics University of Kentucky 25 Ph.D. Dissertations Directed Date Description Institution # Students 07/2006 - Present Teboh Roland, M.S. University of Texas Health Science Center San Antonio 1 07/2006 - Present Drosoula Giantsoudi University of Texas Health Science Center San Antonio 1 11/2005 - 08/2007 Lan Lin Ph.D. University of Texas Health Science Center San Antonio 1 08/2005 - Present Frances Su, M.S. University of Texas Health Science Center San Antonio 1 07/2005 - Present Jun Xu University of Texas Health Science Center San Antonio 1 Post Graduate Rotation Supervision Date Description 08/2008 - 12/2008 RADI5005 Institution # Students UTHSCSA Post-Doctoral Student Supervision Date Description 03/2008 - Present Yongjun Zhai, Ph.D. Institution # Students University of Texas Health Sciences Center San Antonio 1 01/2006 - Present Yaxi Liu, Ph.D. University of Texas Health Science Center San Antonio 1 01/2003 - 01/2005 Xujeng Weng, Ph.D. University of Arkansas for Medical Sciences 1 08/1996 - 05/1998 Jurgen Erb, Ph.D University of Kentucky Medical Center 1 . . Pre-Doctoral Student Supervision Date Description Institution # Students 01/1999 - 01/2005 Yannis Tsougos University of Larissa 1 01/1999 - 01/2004 Sotirios Stathakis University of Patras 1 Rotation Student Supervision Date Description Institution 09/1995 - 02/2000 Clinical Rotation of Medical Physics University of Kentucky Residents # Students 4 Visiting Graduate Students Date Description 08/2002 - 08/2003 Kyriakos Hadjigeorgiou, M.S. Institution University of Patras # Students 1 RESEARCH EXPERTISE: Dose Calculation Algorithms in Radiation Therapy - The first part of my career was devoted to the development of novel algorithms for the calculation of dose in radiation therapy treatment planning. My work on Monte Carlo algorithms and the convolution / superposition algorithms was incorporated into the commercially available treatment planning systems, and is now considered the state-of-the-art algorithm. I continue to work on this clinical research area, with the on-going development of a new Monte Carlo based algorithm that explicitly accounts for density and atomic composition of the human body. Inhomogeneity Corrections in Treatment Planning - I have been investigating the effect of tissue heterogeneity on dose prediction for photon beams for several years. I have an extensive publication record in this area, and I chaired the Task Group for the American Association of Physicists in Medicine (AAPM) that developed the Standard of Practice for dose calculation with the inclusion of tissue heterogeneities. I continue to work in this area and study the effect of tissue heterogeneity in the delivery of hypofractionated regiments to lung and upper GI patients with stereotactic Body Radiotherapy. Intensity Modulated Radiation Therapy - Over the past ten years, I have worked in the development of novel techniques for the planning and delivery of complex beams that conformally deliver the prescribed dose to the target. This area of research parallels my clinical interest in image-guided radiotherapy. My collaborators and I have developed several algorithms and software tools that have enabled us to improve on the accuracy and the quality assurance of intensity modulated radiation therapy. I developed a clinical training course for physicians, medical physicists, and dosimetrists to share the clinical tools that we have developed and implemented, and I have published and presented extensively in this area. We continue this research effort with the inclusion of biological evaluation and optimization of treatment plans based on toxicity data. We have already published in this area and we have an active collaboration with Karolinska Institute in Sweden to further exploit the possibilities of a radiobiologically based treatment planning environment in radiation therapy. PROJECTS: Curriculum Development 07/200812/2008 Medical Residency Program, Developed a one-year residency training program for master‘s level medical physics graduates, compliant with American Association of Physicists in Medicine program guidelines at the University of Texas Health Science Center at San Antonio 01/200609/2007 Medical Residency Program, Developed a new curriculum for the medical residency program based on the American Society of Therapeutic Radiation Oncologists / American Association of Physicists in Medicine training guidelines at the University of Texas Health Science Center San Antonio. 01/2006Present Medical Dosimetry Training Program, Restructured curriculum and developed formalized coursework (instead of on the job training) for the Medical Dosimetry training program at the Cancer Therapy and Research Center. 01/2006Present Medical Physics Graduate Clinical Practicum, Developed a two year program offering clinical experience for those students enrolled in the graduate medical physics program at the University of Texas Health Science Center San Antonio. The clinical practicum curriculum was designed to expose the student to all aspects of clinical medical physics in radiation therapy. Through individual instruction and under the supervision of the faculty medical physicist the student performs a number of defined tasks and documents his progress in well defined checklists for each rotation. 05/200111/2005 Medical Physics Residency Program, Developed a two-year residency training program for master‘s level medical physics graduates, compliant with American Association of Physicists in Medicine program guidelines at the University of Arkansas for Medical Sciences 05/200108/2004 Medical Dosimetry Bachelor of Science program, Developed the curriculum for this degree-granting program (one of three formal programs in medical dosimetry in the country) at the University of Arkansas for Medical Sciences. Departmental Projects 05/200110/2005 Clinical Program Development, Established a medical physics program in the Department of Radiation Oncology at the University of Arkansas for Medical Sciences. This was a new department that was set up with new equipment. I assembled a medical physics group; we established several clinical programs including: Intensity Modulated Radiation Therapy, tomotherapy, total body and total skin radiotherapy, respiratory gated imaging and delivery of radiotherapy, digital imaging with electronic portal imaging (EPID) and photostimulable phosphor cassettes, real time image based prostate brachytherapy in the operating room, Gamma knife radiosurgery, High Dose and Low Dose Rate comprehensive brachytherapy. In addition to the clinical development there was teaching of the student therapists, medical dosimetrists, and medical physics residents on the use and development of clinical protocols for those new treatment modalities. 05/200110/2005 Stereotactic Radiosurgery, After completing a Gamma Knife stereotactic radiosurgery training course, I developed a comprehensive stereotactic quality assurance program at the University of Arkansas for Medical Sciences. In addition to clinical protocols, it contained a database that was created for patient data entry and outcome analysis. A Training and Procedure Manual was also developed which was used for the training of medical residents, medical physics residents, and dosimetry students. Teaching Projects 03/2008Present Medical Dosimetry Board Review Course, Developed a review course that is offered nationally to medical dosimetry students and junior medical dosimetrists that are preparing to take the board certification examination. The course offers 20CE credits 03/200303/2003 Developments in Modern Treatment Planning and Radiation Delivery Techniques, Organized and delivered a week long teaching and refresher course on new developments in intensity modulated and image guided radiation therapy. The course was held at the IASO teaching hospital in Athens Greece and was attended by medical physicists, radiation oncologists and medical oncologists. 07/199402/2000 Review course on modern treatment planning algorithms, Developed the curriculum and taught this course to practicing clinical medical physicists from the US and abroad. This was a symposium-style teaching course that was offered six times a year for three days, of which I taught one day, on the physics of modern treatment planning algorithms. PUBLICATIONS: Abstract * 1. Esquivel C, Stathakis S, Gutiérrez AN, Shi C, Smith M., Papanikolaou N. Clinical Experience in the Use of Optically Stimulated Luminescent Dosimeters for Total Body Irradiation 2009 Nov. (51th ASTRO Annual Meeting, Chicago, IL Nov.1-5 2009). * 2. Buo B., Papanikolaou N, Shi C. Monte Carlo Based Plan Verification For Electronic Brachytherapy: The Dosimetric Influence Of Patient Boundary And Tissue Inhomogeneities 2009 Nov. (51th ASTRO Annual Meeting, Chicago, IL Nov.1-5 2009). * 3. Sarkar V., Shi C, Papanikolaou N. An Application for Digital Tomosynthesis Datasets in Adaptive Radiotherapy 2009 Nov. (Radiological Society of North America 2009 annual meeting). * 4. Holmes R., Shi C, Esquivel C, Gutiérrez AN, Stathakis S, Papanikolaou N, He W.. Impact of Arc Angle and Dose Rate on SmartArc™ IMRT Delivery 2009 Nov. (Radiological Society of North America 2009 annual meeting). * 5. Liu Y, Shi C, Chen W., Xu G., Papanikolaou N. Tissue Composition Effect Investigated in Proton Therapy Using Monte Carlo Models Of Hounsfield Number Conversion And Cadaver-based Anatomical Data 2009 Nov. (51th ASTRO Annual Meeting, Chicago, IL Nov.1-5 2009). * 6. Guo B., Papanikolaou N, Shi C. Monte Carlo based plan verification for electronic brachytherapy: the dosimetric influence of patient boundary and tissue inhomogeneities 2009 Sep. (10th Biennial ESTRO Conference on Physics and Radiation Technology for Clinical Radiotherapy; Maastricht, The Netherlands August 30 – September 3 2009). * 7. Shi C, Mavroidis P., Zhai Y. J., Xu J., Lind B.K., Papanikolaou N. Evaluation Of IMRT Dose Delivery Using The Concepts Of Gamma Index And Biologically Effective Uniform Dose 2009 Sep. (10th Biennial ESTRO Conference on Physics and Radiation Technology for Clinical Radiotherapy; Maastricht, The Netherlands August 30 – September 3 2009). * 8. Su F.C., Shi C, Mavroidis P., Virginia Goytia, Crownover RL, Rassiah-Szegedi P., Baltas D., Papanikolaou N. Evaluation on Lung Cancer Patients‘ Four dimensional Treatment Plans Utilizing Biologically Effective Uniform Dose 2009 Sep. (11th International Congress of the IUPESM (MEDICAL PHYSICS AND BIOMEDICAL ENGINEERING WORLD CONGRESS 2009) September 7–12 Munich/Germany (2009)). * 9. Dzintars E., Mavroidis P., Stathakis S, Shi C, Gutiérrez AN, Esquivel C, Su F., Papanikolaou N. Radiobiological evaluation of inhomogenity corrections in tissue for lung cancer patients 2009 Jul. (AAPM Annual Meeting, July 26-30, 2009 Anaheim, California). * 10. Vazquez L., Gutiérrez AN, Stathakis S, Roland T., Esquivel C, Shi C, Mavroidis P., Papanikolaou N. Dosimetric comparison among 3D conformal, IMRT, and phase-average compensators for SBRT treatment planning 2009 Jul. (AAPM Annual Meeting, July 26-30, 2009 Anaheim, California). * 11. Calvo O., Gutiérrez AN, Stathakis S, Mavroidis, Moral S., Esquivel C, Shi C, Papanikolaou N. Validation of the Delta4 dosimetry phantom against ionometric measurements 2009 Jul. (AAPM Annual Meeting, July 26-30, 2009 Anaheim, California). * 12. Calvo O., Stathakis S, Gutiérrez AN, Mavroidis P., Moral S., Esquivel C, Shi C, Papanikolaou N. Characterization of small volume ion chambers for absolute dosimetry 2009 Jul. (AAPM Annual Meeting, July 26-30, 2009 Anaheim, California). * 13. Rodriguez S., Su F., Shi C, Stathakis S, Gutiérrez AN, Esquivel C, Mavroidis P., Papanikolaou N. Comparison of Helical Tomotherapy, MLC-based IMRT, and 3D-Conformal radiation modalities in BEUD utilization and analysis 2009 Jul. (AAPM Annual Meeting, July 26-30, 2009 Anaheim, California). * 14. Xu J., Buckey C., Swanson GP, Stathakis S, Esquivel C, Gutiérrez AN, Shi C, Mavroidis P., Papanikolaou N. Impact of proper bladder and rectum delineation in the evaluation of the effectiveness of IMRT in prostate cancer radiotherapy 2009 Jul. (AAPM Annual Meeting, July 26-30, 2009 Anaheim, California). * 15. Wang X., Esquivel C, Shi C, Nes E., Papanikolaou N, Charlton M. The Neutron Dose Evaluation and Shielding at the Maze Entrance of the Varian Clinac 2300EX 2009 Jul. (AAPM Annual Meeting, July 26-30, 2009 Anaheim, California). * 16. Moral S., Calvo O., Armas J., Gutiérrez AN, Stathakis S, Roland T., Esquivel C, Shi C, Papanikolaou N. Assessing the sensitivity of a multi-detector array for IMRT patient QA 2009 Jul. (AAPM Annual Meeting, July 26-30, 2009 Anaheim, California). * 17. Corona I., Esquivel C, Gutiérrez AN, Stathakis S, Shi C, Papanikolaou N. Dosimetric evaluation of a 120-MLC plan delivered on a 80-MLC linear accelerator 2009 Jul. (AAPM Annual Meeting, July 26-30, 2009 Anaheim, California). * 18. Papanikolaou N, Liu Y, Roland T., Mavroidis P., Shi C. Measurements of Fiducial marker positions for real-time MLC beam tracking delivery using MV fluence video 2009 Jul. (AAPM Annual Meeting, July 26-30, 2009 Anaheim, California). * 19. Zhai Y., Jin X., Giantsoudi D., He W., Shi C, Papanikolaou N. Experimental Verification of Biological Gamma Plus Index 2009 Jul. (AAPM Annual Meeting, July 26-30, 2009 Anaheim, California). * 20. Holmes R., He W., Gutiérrez AN, Shi C, Papanikolaou N. Evaluation of Tomo Quality Assurance™ (TQA™) Performance for Daily Quality Assurance 2009 Jul. (AAPM Annual Meeting, July 26-30, 2009 Anaheim, California). * 21. Xu J., Shi C, Papanikolaou N. A novel dynamic MLC leaf sequencing algorithm for 4D treatment with deformable target motion correction 2009 Jul. (AAPM Annual Meeting, July 26-30, 2009 Anaheim, California). * 22. Esquivel C, Smith M., Stathakis S, Gutiérrez AN, Shi C, Papanikolaou N. Total Skin Electron Therapy skin dose validation using optically stimulated luminescent dosimeters 2009 Jul. (AAPM Annual Meeting, July 26-30, 2009 Anaheim, California). * 23. Guo B., Cheng C., Director B., Rusch T., Esquivel C, Stathakis S, Shi C, Papanikolaou N. A Monte Carlo based Dose Calculation and Evaluation Toolkit for Electronic Brachytherapy: Feasibility of IMBT 2009 Jul. (AAPM Annual Meeting, July 26-30, 2009 Anaheim, California). * 24. Esquivel C, Smith M., Stathakis S, Gutiérrez AN, Shi C, Papanikolaou N. In vivo dose measurements for Total Body Irradiation using optically stimulated luminescent dosimeters 2009 Jul. (AAPM Annual Meeting, July 26-30, 2009 Anaheim, California). * 25. Liu Y, Roland T., Shi C, Swanson GP, Mavroidis P., Papanikolaou N. Visibility study of fiducial marker for real-time MLC beam tracking delivery using MV fluence video 2009 Jul. (AAPM Annual Meeting, July 26-30, 2009 Anaheim, California). * 26. Diaz AZ, Liu Y, Shi C, Papanikolaou N. An evaluation study of treatment planning of brain tumor using implanted neutron brachytherapy and compared with photon IMRT 2009 Jul. (AAPM Annual Meeting, July 26-30, 2009 Anaheim, California). * 27. Su F., Shi C, Mavroidis P., Papanikolaou N. Utilizing Radiobiological Measures and Planned Adaptive Software to Evaluate Adaptive Tomotherapy Plans for Lung Cancer Patients 2009 Jul. (AAPM Annual Meeting, July 26-30, 2009 Anaheim, California). * 28. Roland T., Shi C, Liu Y, Mavroidis P., Papanikolaou N. Evaluation of tracking versus conventional delivery for lung cancer radiotherapy via 4D treatment planning 2009 Jul. (AAPM Annual Meeting, July 26-30, 2009 Anaheim, California). * 29. Liu Y, Shi C, Xu X., Chen W., Jette D., Papanikolaou N. Dependency of proton dose on tissue composition investigated using Monte Carlo models of Hounsfield number conversion and cadaverbased anatomical data 2009 Jul. (AAPM Annual Meeting, July 26-30, 2009 Anaheim, California). * 30. Roland T., Shi C, Liu Y, Stathakis S, Mavroidis P., Papanikolaou N. Tracking versus gating for lung cancer radiotherapy. A retrospective study involving 5 patient 4DCT data sets 2009 Jul. (AAPM Annual Meeting, July 26-30, 2009 Anaheim, California). * 31. Myers P., Weber L., Gutiérrez AN, Shi C, Papanikolaou N. Delivery Angle Dependency on Treatment Plan Quality for Whole Breast Radiotherapy Using Helical Tomotherapy 2009 Jul. (AAPM Annual Meeting, July 26-30, 2009 Anaheim, California). * 32. Stathakis S, Buckey C., Gutiérrez AN, Mavroidis P., Esquivel C, Shi C, Mihailidis D., Papanikolaou N. Dosimetric Evalualtion of a Commercial Compensator for Spatially Fractionated Radiation Therapy 2009 Jul. (AAPM Annual Meeting, July 26-30, 2009 Anaheim, California). * 33. Vikren S., Shi C, Papanikolaou N. A Digital tomosynthesis Applications in Radiotherapy Toolkit 2009 Jul. (AAPM Annual Meeting, July 26-30, 2009 Anaheim, California). * 34. Vikren S., Shi C, Papanikolaou N. The effect of set-up errors on the final target dose distribution in step-and-shoot IMRT plans compared to helical tomotherapy plans 2009 Jul. (AAPM Annual Meeting, July 26-30, 2009 Anaheim, California). * 35. Shi C, Gutiérrez AN, Liu Y, Zhai Y., Papanikolaou N. Impact of Pulse Forming Network (PFN) and Injection Current (IC) Parameters on Output and Energy Variations of Helical TomoTherapy 2009 Jul. (AAPM Annual Meeting, July 26-30, 2009 Anaheim, California). * 36. P Tyan, M Joyner, M Smith, Gutiérrez A, Stathakis S, P Mavroidis, Papanikolaou N, Swanson G. Comparison of Pre- and Post-Implant Prostate Volume Segmentation Using Trans-Rectal Ultrasound and Computed Tomography 2009 Jun. (Medical Physics; vol. 36, no. 6). 37. Gutiérrez AN. Dosimetric Characterization of Whole Brain Radiotherapy (WBRT) Using Helical Tomotherapy 2009 Jun. p. 2662-2662. (Medical Physics; vol. 36, no. 6). 38. Gutiérrez AN. Evaluation of the Delta4 3D Cylindrical Phantom for Delivery Quality Assurance of Stereotactic Body Radiotherapy (SBRT) Treatments Using Helical Tomotherapy 2009 Jun. p. 26042604. (Medical Physics; vol. 36, no. 6). 39. Gutiérrez AN. The Inter- and Intra-Fraction Reproducibility of Three Common IMRT Delivery Techniques 2009 Jun. p. 2552-2552. (Medical Physics; vol. 36, no. 6). * 40. Sarkar V., Shi C, Papanikolaou N. The effect of reconstruction algorithm and number of projection images used as input data on the final quality of megavoltage digital tomosynthesis datasets 2009 Feb. (the 19th Annual Meeting of the American College of Radiation Oncology, February 26th-28th, 2009 in Las Vegas, Nevada). * 41. Su F. C., Shi C, Mavroidis P., Papanikolaou N. Assessment of Four-dimensional Radiotherapy Planning and Respiratory Motioninduced Dose Difference Based on Radiological Measures 2009 Feb. (the 19th Annual Meeting of the American College of Radiation Oncology, February 26th-28th, 2009 in Las Vegas, Nevada). * 42. Zhai Y. J., Trache L., Tribble R., Papanikolaou N, Liu Y, Shi C, Iacob V., Hardy J.. Using Monte Carlo Simulations and Experimental Measurements to Calibrate An HPGE Gamma Detector Precisely 2009 Feb. (the 19th Annual Meeting of the American College of Radiation Oncology, February 26th-28th, 2009 in Las Vegas, Nevada). * 43. Zhai Y. J., Mavroidis P., Shi C, Xu J., Papanikolaou N. Developing a new gamma evaluation index with biological information of organs 2009 Feb. (the 19th Annual Meeting of the American College of Radiation Oncology, February 26th-28th, 2009 in Las Vegas, Nevada). * 44. Vikren Sarkar, Chengyu Shi, Niko Papanikolaou. The effect of reconstruction algorithm and number of projection images used as input data on the final quality of megavoltage digital tomosynthesis datasets. 2009 Feb. (ACRO). * 45. Teboh R., Papanikolaou N. Incorporating system latency effects associated with dynamic radiotharpy delivery in the dose prediction step: Preliminary results based on phantom measurements 2008 Nov. (RSNA 2008). * 46. Liu Y, Nguyen G, Swanson G, Eng T, Papanikolaou N,. Dose Calculation For Prostate Tumor Using Human Anatomy-based Monte Carlo Algorithm Compared To 2008 Sep. p. 557. (Int J Radiat Oncol Biol Phys; vol. 72, no. 1). * 47. Liu Y, Lin B, Papanikolaou N,. 4D Tracking Radiotherapy Delivery Evaluation For Five Patients With Mobile Lung Tumor 2008 Sep. p. 614. (Int J Radiat Oncol Biol Phys; vol. 72, no. 1). * 48. Liu Y, Diaz A, Papanikolaou N,. Dose Calculation For Brain Using A Cf-252 Neutron Brachytherapy Source Based-on Human Anatomy Monte 2008 Sep. p. 664. (Int J Radiat Oncol Biol Phys; vol. 72, no. 1). * 49. Stathakis S, Shi C, Mavroidis P., Giantsoudi D., Swanson GP, Esquivel C, Ferreira B. C., Komisopoulos G., Papanikolaou N. Use Of Megavoltage CT Imaging For Quantifying Treatment Setup Uncertainties 2008 Sep. p. S660-S660. (International Journal of Radiation Oncology*Biology*Physics; vol. 72, no. 1). * 50. Liu Y, Guo B., Shi C, Mavrodis P., Ha CS, Xu X., Papanikolaou N. Dose calculation for proton radiotherapy based-on Monte Carlo simulation using anatomical detailed human model 2008 Sep. (10th biennial ESTRO Meeting 2008). * 51. Liu Y, Lin BC, Shi C, Gutiérrez AN, Stathakis S, Papanikolaou N. 4D tracking radiotherapy DmMLCbased delivery for respiratory lung tumor 2008 Sep. (10th biennial ESTRO Meeting 2008). * 52. Su F, Shi C, Mavroidis P., Gutiérrez AN, Papanikolaou N. Evaluation on the four-dimensional radiation treatment plan for lung cancer using biologically effective uniform dose 2008 Sep. (10th biennial ESTRO Meeting 2008). * 53. D Giantsoudi, A Gutierrez, C Shi, N Papanikolaou . Clinical feasibility of using film-based, in vivo dosimetry to detect setup errors during stereotactic body radiotherapy treatments using helical tomotherapy 2008 Sep. (10th biennial ESTRO Meeting 2008). * 54. Shi C, Mavroidis, P, Esquivel C, Costa Ferreira, B, Berkley L., Diaz AZ, Papanikolaou N. Helical Tomotherapy and MLC-based IMRT in treating brain and cranio-spinal tumors 2008 Sep. (10th biennial ESTRO Meeting). * 55. Delichas M., Mavroidis P., Ferreira B., Shi C, Gutiérrez AN, Lind B. K., Papanikolaou N, Ha CS. Lung cancer radiotherapy using 3D-CRT, MLC-based IMRT and Helical Tomotherapy 2008 Sep. (10th biennial ESTRO Meeting 2008). * 56. Mavroidis P., Su F., Giantsoudi D., Stathakis S, Komisopoulos G., Shi C, Swanson GP, Ha CS, Papanikolaou N. Investigating the expected clinical impact of daily Megavoltage CT registration on adaptive radiotherapy with Helical Tomotherapy 2008 Sep. (10th biennial ESTRO Meeting 2008). * 57. Stathakis S, Shi C, Mavroidis P., Swanson GP, Ramer R., Sarkar V., Ferreira B. C., Komisopoulos G., Giantsoudi D., Papanikolaou N. Treatment Setup Uncertainties Quantified by Megavoltage CT Imaging 2008 Sep. (10th biennial ESTRO Meeting 2008). * 58. C. Esquivel, N. Papanikolaou. EVALUATION OF A NEW IMPLANTABLE DOSIMETER USED FOR 2008 Sep. p. S70. (Radiotherapy and Oncology; vol. 88, no. 2). * 59. B. Guo, Y. Liu, C. Shi, P. Mavroidis, C. Ha, G. Xu, N. Papanikolaou. DOSE CALCULATION FOR PROTON RADIOTHERAPY BASED-ON 2008 Sep. p. S113. (ESTRO; vol. 88, no. 2). * 60. A. Gutierrez, N. Dinh Dang, N. Papanikolaou. BREATHING-INDUCED, DOSE DISCREPANCIES DURING WHOLE 2008 Sep. p. S195. (ESTRO; vol. 88, no. 2). * 61. S. Hyödynmaa, P. Mavroidis, B. Costa Ferreira, S. Axelsson, N. Papanikolaou, B. Lind . INVESTIGATING THE EXPECTED EFFECTS OF PATIENT POSITIONING, 2008 Sep. p. S199. (ESTRO; vol. 88, no. 2). * 62. M. Delichas, P. Mavroidis, B. Costa Ferreira, C. Shi, A. Gutierrez, B. Lind, N. Papanikolaou, C. Ha . LUNG CANCER RADIOTHERAPY USING 3D-CRT, MLC-BASED 2008 Sep. p. S284. (ESTRO; vol. 88, no. 2). * 63. V. Sarkar, A. Gutierrez, S. Stathakis, G. Swanson, N. Papanikolaou. A VIRTUAL FLUOROSCOPY SYSTEM TO AID IN PROSTATE SEED 2008 Sep. p. S311. (ESTRO; vol. 88, no. 2). * 64. M. Smith, S. Stathakis, A. Gutierrez, G. Swanson, M. Joyner, N. Papanikolaou . DOSIMETRIC ANALYSIS OF REAL TIME AND POST IMPLANTATION 2008 Sep. p. S322. (ESTRO; vol. 88, no. 2). * 65. C. Buckey, S. Stathakis, G. Swanson, P. Mavroidis, F. C. Su, N. Papanikolaou . IS IMRT BETTER THAN 3D CONFORMAL THERAPY FOR PROSTATE 2008 Sep. p. S332. (ESTRO; vol. 88, no. 2). * 66. M. Joyner, T. Tynan, A. Gutierrez, S. Stathakis, N. Papanikolaou, G. Swanson . TARGET VOLUME SEGMENTATION DISCREPANCIES BETWEEN 2008 Sep. p. S342. (ESTRO; vol. 88, no. 2). * 67. P. Karaiskos, P. Mavroidis, B. Costa Ferreira, N. Papanikolaou, P. Sandilos, E. Koutsouveli, C. Scarleas, K. Dardoufas . INVESTIGATING THE IMPACT OF USING CT VS CT-MRI IMAGES 2008 Sep. p. S354. (ESTRO; vol. 88, no. 2). * 68. Y. Liu, B. Lin, C. Shi, S. Stathakis, A. Gutierrez, N. Papanikolaou. 4D TRACKING RADIOTHERAPY DMMLC-BASED DELIVERY FOR 2008 Sep. p. S361. (ESTRO; vol. 88, no. 2). * 69. T. Roland, P. Rassiah-Szegedi, M. Szegedi, P. Mavroidis, N. Papanikolaou . A PHANTOM BASED INVESTIGATION OF THE EFFECTS OF MIP 2008 Sep. p. S363. (ESTRO; vol. 88, no. 2). * 70. P. Mavroidis, F. C. Su, D. Giantsoudi, S. Stathakis, G. Komisopoulos, C. Shi, G. Swanson, C. Ha, N. Papanikolaou . INVESTIGATING THE EXPECTED CLINICAL IMPACT OF DAILY 2008 Sep. p. S373. (ESTRO; vol. 88, no. 2). * 71. N. Papanikolaou, S. Stathakis, P. Mavroidis, C. Ha. PLANNED VS. DELIVERED DOSE DISTRIBUTIONS WITH AND 2008 Sep. p. S375. (ESTRO; vol. 88, no. 2). * 72. R. Ramer, T. Tynan, T. Eng, C. Esquivel, N. Papanikolaou. THE EFFECT OF CLOTHING ON THE SKIN DOSE DURING 6 MEV 2008 Sep. p. S393. (ESTRO; vol. 88, no. 2). * 73. O. Calvo, A. Gutierrez, S. Stathakis, P. Rassiah-Szegedi, N. Papanikolaou . STUDY OF THE DOSIMETRIC ACCURACY OF COLLAPSED CONE 2008 Sep. p. S412. (ESTRO; vol. 88, no. 2). * 74. G. Komisopoulos, P. Mavroidis, N. Papanikolaou, B. Lind. TREATMENT PLAN OPTIMIZATION USING DIFFERENT METHODS 2008 Sep. p. S424. (ESTRO; vol. 88, no. 2). * 75. S. Rodriguez, C. Esquivel, R. Crownover, N. Papanikolaou. ANALYSIS OF OUT OF FIELD SCATTER DOSE AS A FUNCTION OF 2008 Sep. p. S425. (ESTRO; vol. 88, no. 2). * 76. S. Stathakis, C. Shi, P. Mavroidis, G. Swanson, C. Ramer, V. Sarkar, B. Costa Ferreira, G. Komisopoulos, D. Giantsoudi, N. Papanikolaou . TREATMENT SETUP UNCERTAINTIES QUANTIFIED BY MEGAVOLTAGE 2008 Sep. p. S437. (ESTRO; vol. 88, no. 2). * 77. C. Shi, P. Mavroidis, C. Esquivel, B. Costa Ferreira, A. Diaz, N. Papanikolaou . HELICAL TOMOTHERAPY AND MLC-BASED IMRT IN TREATING 2008 Sep. p. S446. (ESTRO; vol. 88, no. 2). * 78. P. Tynan, S. Stathakis, N. Papanikolaou. USE OF CUSTOM-SHAPED COMPENSATORS FOR MODULATED 2008 Sep. p. S450. (ESTRO; vol. 88, no. 2). * 79. D. Giantsoudi, A. Gutierrez, C. Shi, N. Papanikolaou. CLINICAL FEASIBILITY OF USING FILMBASED, IN VIVO DOSIMETRY 2008 Sep. p. S381. (ESTRO; vol. 88, no. 2). * 80. G. Plataniotis, M. Adamus-Górka, S. Hyödynmaa, N. Papanikolaou, B. Lind, P. Mavroidis. ASSOCIATION OF DOSE-MASS-HISTOGRAM (DMH) WITH THE 2008 Sep. p. S425. (ESTRO; vol. 88, no. 2). * 81. F. C. Su, C. Shi, P. Mavroidis, A. Gutierrez, N. Papanikolaou. EVALUATION ON THE FOURDIMENSIONAL RADIATION TREATMENT 2008 Sep. p. S468. (ESTRO; vol. 88, no. 2). * 82. Cheng R., Shi C, Guo B., Papanikolaou N, Ahmad S.. A Clinical Monte Carlo Dosimetric Evaluation in Accelerated Partial Breast Electronic Brachytherapy 2008 Sep. p. S521-S522. (International Journal of Radiation Oncology*Biology*Physics; vol. 72, no. 1). * 83. Gutiérrez AN, Mavroidis P., Su F. C., Giantsoudi D., Komisopoulos G., Shi C, Swanson GP, Ha CS, Papanikolaou N. Daily Megavoltage CT Registration on Adaptive Radiotherapy with Helical Tomotherapy 2008 Sep. p. S581-S582. (International Journal of Radiation Oncology*Biology*Physics; vol. 72, no. 1). * 84. Papanikolaou N, Stathakis S, Shi C, Gutiérrez AN, Esquivel C, Mavroidis P., Ha CS. Patient Setup Correction in Treating Head and Neck Cancer with Helical Tomotherapy 2008 Sep. (International Journal of Radiation Oncology*Biology*Physics; vol. 72, no. 1). * 85. Su F, Shi C, Swanson GPapanikolaou N. Dosimetric Impacts of Gantry Angle Misalignment on Prostate Cancer Treatment using Helical Tomotherapy 2008 Aug. p. 269. (TCRT Online; vol. 7, no. 4). * 86. M Yam, Gutiérrez AN, Shi C, Papanikolaou N. On the Dosimetric Characterization of Inclined Target Geometries using Helical Tomotherapy 2008 Jun. p. 2833-2833. (Medical Physics; vol. 35, no. 06). * 87. J Xu, Papanikolaou N, Shi C, Jiang S.. Dose verification of 2D synchronized DMLC IMRT delivery to a moving target 2008 Jun. p. 2745-2745. (Medical Physics; vol. 35, no. 6). * 88. J Xu, T Roland, Shi C, Papanikolaou N. 4D IMRT QA by dynamic log file analysis 2008 Jun. p. 27602760. (Medical Physics; vol. 35, no. 06). * 89. Roland T., Shi C, Papanikolaou N. Development and application of a robust toolkit, Tomo-XML-DOM, for helical tomotherapy system 2008 Jun. p. 2810-2810. (Medical Physics; vol. 35, no. 06). * 90. Cheng R., Guo B., Ahmad S., Papanikolaou N, Shi C. Dosimetric Impacts on Tissue Homogeneity Corrections in Electronic Brachytherapy 2008 Jun. p. 2735-2735. (Medical Physics; vol. 35, no. 06). * 91. Esquivel C, Mavroidis P., Shi C, Ferreira B., Lin BC, Gutiérrez AN, Stathakis S, Papanikolaou N. Radiobiological comparison of Helical Tomotherapy and MLC-based IMRT for brain and cranio-spinal tumors 2008 Jun. p. 2822-2822. (Medical Physics; vol. 35, no. 06). * 92. Delichas M., Ferreira B., Shi C, Gutiérrez AN, Lin BC, Papanikolaou N, Mavroidis P.. Radiobiological effectiveness of 3D-Conformal Radiotherapy, MLC-based IMRT and Helical Tomotherapy in lung cancer 2008 Jun. p. 2821-2822. (Medical Physics; vol. 35, no. 06). * 93. Swanson GP, Shi C, Mavroidis P., Stathakis S, Su F. C., Ramer R., Sarkar V., Ferreira B., Komisopoulos G., Giantsoudi D., Papanikolaou N. Radiobiologically Quantified Treatment Setup Uncertainties based on Megavoltage (MV) CT Imaging 2008 Jun. p. 2822-2822. (Medical Physics; vol. 25, no. 06). * 94. Su F.C., Shi C, Mavroidis P., Papanikolaou N. Radiobiological evaluation on the four-dimensional stereotactic radiotherapy plan 2008 Jun. p. 2824-2824. (Medical Physics; vol. 35, no. 06). * 95. Sarkar V., Shi C, Papanikolaou N. The effect of number of projections on the accuracy of volumetric data reconstructed using digital tomosynthesis 2008 Jun. p. 2654-2654. (Medical Physics; vol. 35, no. 06). * 96. Giantsoudi D., Gutiérrez AN, Shi C, Papanikolaou N. On the Sensitivity of Film-Based, In Vivo Dosimetry to Setup Errors for Stereotactic Body Radiotherapy Treatments 2008 Jun. p. 2832-2832. (Medical Physics; vol. 35, no. 06). * 97. Zhai Y. J., Trache L., Tribble R., Liu Y, Shi C, Papanikolaou N, Iacob V., Hardy J., Tabacaru G.. New method of an HPGe detector precise efficiency calibration with experimental measurements and Monte Carlo simulations 2008 Jun. p. 2780-2780. (Medical Physics; vol. 35, no. 6). * 98. Liu Y, Shi C, Xu X. G., Papanikolaou N. Human Anatomy-Based Monte Carlo Dose Calculation for External Protons 2008 Jun. p. 2800-2801. (Medical Physics; vol. 35, no. 6). * 99. Giantsoudi D, Liu Y, Diaz A, Mavroidis P, Papanikolaou N.. Neutron Energy and Dose Consideration of Cf-252 Brachytherapy Sources for Various Geometries 2008 Jun. (Med Phys; vol. 35, no. 6). * 100. Papanikolaou N, Liu Y, Roland T. Performance of Dual Layer Micro MLC versus Standard Single Layer MLC for IMRT Delivery 2008 Jun. (Med Phys; vol. 35, no. 6). * 101. Roland T, Liu Y, Papanikolaou N.. 4D planning from Multi-phase 3D Dose Distribution and Linear Transformation on a Single Phase Plan 2008 Jun. p. 2752. (Med Phys; vol. 35, no. 6). * 102. Guo B, Liu Y, Chen C, Ahmad S, Papanikolaou N. Accurate Simulation for Therapeutic Protons Range-Energy and Range-Density Tables 2008 Jun. p. 2805. (Med Phys; vol. 35, no. 6). * 103. Liu Y, Guo B, Lin L, Papanikolaou N. Pre-clinical Evaluation of a 4D Tracking DmMLC-based Delivery to Lung Tumor 2008 Jun. p. 2800. (Med Phys; vol. 35, no. 6). * 104. Papanikolaou N, Stathakis S, Mavroidis P. Expected Clinical Impact of the Differences Between Planned and Delivered Dose Distributions in Helical Tomotherapy 2008 Jun. p. 2937. (Medical Physics; vol. 35, no. 6). * 105. Papanikolaou N, Caldwell K,Gutiérrez A,Tome W. Dosimetric Delivery Verification of Whole Brain Radiotherapy with Hippocampal Avoidance (WBRT-HA) and Simultaneously Integrated Multiple Metastases Boost (SIB) 2008 Jun. p. 2826. (Medical Physics; vol. 35, no. 6). * 106. Mavroidis P, Plataniotis G, Gorka M, Hyodynmaa S, Papanikolaou N, Lind B. Dose-Mass-Histogram (DMH) Vs. Dose-Volume Histogram (DVH) in Predicting Lung Complication 2008 Jun. p. 2823. (Medical Physics; vol. 35, no. 6). * 107. Komisopoulos G, Mavroidis P, Papanikolaou N, Lind B. Interpretation of Dosimetric Results in Terms of Expected Treatment Outcome When Optimizing Treatment Plans Using Different Methods of Regularizing Dose Inhomogeneity 2008 Jun. p. 2820. (Medical Physics; vol. 35, no. 6). * 108. Salter B, Fuss M, Sarkar V, Wang B, Hollingshaus S, Papanikolaou N, Tobler M, Shrieve D. Optimization of Isocenter Location for Intensity Modulated Stereotactic Treatment of Intracranial Targets 2008 Jun. p. 2825. (Medical Physics; vol. 35, no. 6). * 109. N Papanikolaou, E Klein. Heterogeneity Corrections in Clinical Trials 2008 Jun. p. 2961. (Medical Physics; vol. 35, no. 6). * 110. S Hyodynmaa, P Mavroidis, B Ferreira, S Axelsson, N Papanikolaou, B Lind. Radiobiological Optimization of Breast Cancer Radiotherapy Taking Into Account Patient Positioning, Breathing and Radiation Pneumonitis Scoring 2008 Jun. p. 2821. (Medical Physics; vol. 35, no. 6). * 111. Y Liu, C Shi, X Xu, N Papanikolaou. Human Anatomy-Based Monte Carlo Dose Calculation for External Protons 2008 Jun. p. 2800. (Medical Physics; vol. 35, no. 6). * 112. D Giantsoudi, A Gutiérrez, C Shi, N Papanikolaou. On the Sensitivity of Film-Based, In Vivo Dosimetry to Setup Errors for Stereotactic Body Radiotherapy Treatments 2008 Jun. p. 2832. (Medical Physics; vol. 35, no. 6). * 113. Y Liu, B Guo, L Lin, N Papanikolaou. Pre-Clinical Evaluation of a 4D Tracking DmMLC-Based Delivery to Lung Tumor 2008 Jun. p. 2846. (Medical Physics; vol. 35, no. 6). * 114. A Gutiérrez,W Tome, S Stathakis, N Papanikolaou. Integrated Subvolume Boosting Technique to Reduce Normal Tissue Irradiation During SBRT Treatment Planning Using Helical Tomotherapy 2008 Jun. p. 2947. (Medical Physics; vol. 35, no. 6). * 115. B Guo, Y Liu, C Cheng, S Ahmad, N Papanikolaou. Accurate Simulation for Therapeutic Protons Range-Energy and Range-Density Tables 2008 Jun. p. 2805. (Medical Physics; vol. 35, no. 6). * 116. T Roland, C Shi,N Papanikolaou. Development and Application of a Robust Toolkit, Tomo-XML-DOM, for Helical Tomotherapy System 2008 Jun. p. 2810. (Medical Physics; vol. 35, no. 6). * 117. F Su P Mavroidis, G Swanson, C Buckey, S Stathakis, N Papanikolaou. Radiobiological-Based Comparisons Among Conventional Radiotherapy and IMRT Delivery Techniques for Prostate Treatment Planning 2008 Jun. p. 2821. (Medical Physics; vol. 35, no. 6). * 118. F Su, C Shi, P Mavroidis, N Papanikolaou. Radiobiological Evaluation On the Four-Dimensional Stereotactic Radiotherapy Plan 2008 Jun. p. 2824. (Medical Physics; vol. 35, no. 6). * 119. S Stathakis, A Gutiérrez, P Mavroidis, N Papanikolaou. Dosimetric Verification of the CCCS Algorithm for Spatially Fractionated Radiation Therapy 2008 Jun. p. 2888. (Medical Physics; vol. 35, no. 6). 120. G Swanson,C Shi, P Mavroidis, S Stathakis, F Su, R Ramer, V Sarkar,B Ferreira,G Komisopoulos,D Giantsoudi, N Papanikolaou. Radiobiologically Quantified Treatment Setup Uncertainties Based On Megavoltage (MV) CT Imaging 2008 Jun. p. 2822. (Medical Physics; vol. 35, no. 6). * 121. C Esquivel, P Mavroidis, C Shi, B Ferreira, B Lind, A Gutiérrez, S Stathakis, N Papanikolaou. Radiobiological Comparison of Helical Tomotherapy and MLC-Based IMRT for Brain and CranioSpinal Tumors 2008 Jun. p. 2822. (Medical Physics; vol. 35, no. 6). * 122. P Rassiah, M Szegedi, J Peyton,2 S Stathakis, C Esquivel, A Gutiérrez, N Papanikolaou. Accuracy of the Finite Size Pencil Beam Without the Flattening Filter 2008 Jun. p. 2937. (Medical Physics; vol. 35, no. 6). 123. Papanikolaou N. Imaging for Planning Verification: In Room Imaging: Pre-Treatment Verification 2008 Jun. p. 2926. (Medical Physics; vol. 35, no. 6). * 124. M Delichas, B Ferreira, C Shi, A Gutiérrez, B Lind, N Papanikolaou, P Mavroidis. Radiobiological Effectiveness of 3D-Conformal Radiotherapy, MLC-Based IMRT and Helical Tomotherapy in Lung Cancer 2008 Jun. p. 2821. (Medical Physics; vol. 35, no. 6). * 125. P Mavroidis, F Su, D Giantsoudi, S Stathakis, G Komisopoulos, C Shi, G Swanson, N Papanikolaou. Radiobiological Investigation of the Dosimetric Effects of Daily Megavoltage CT Registration Techniques On Adaptive Radiotherapy with Helical Tomotherapy 2008 Jun. p. 2823. (Medical Physics; vol. 35, no. 6). * 126. R Ramer, A Holder, N Papanikolaou. Utilization of Data Envelopment Analysis (DEA) to Compare Prostate Treatment Options 2008 Jun. p. 2815. (Medical Physics; vol. 35, no. 6). * 127. M Yam, A Gutiérrez, C Shi, N Papanikolaou. On the Dosimetric Characterization of Inclined Target Geometries Using Helical Tomotherapy 2008 Jun. p. 2833. (Medical Physics; vol. 35, no. 6). * 128. C Buckey, S Stathakis, G Swanson, F Su, N Papanikolaou. Dosimetric Comparison of Prostate Radiotherapy Treatment Techniques 2008 Jun. p. 2838. (Medical Physics; vol. 35, no. 6). * 129. S Stathakis, A Gutiérrez, P Rassiah-Szegedi, P Mavroidis, N Papanikolaou. Commissioning of Flattening Filter Free Varian 600C Linear Accelerator 2008 Jun. p. 2781. (Medical Physics; vol. 35, no. 6). * 130. P Desai, S Stathakis, A Gutiérrez, P Mavroidis, N Papanikolaou. Investigation of the Transmission Detectors for Daily Dose Verification and QA of IMRT Treatments 2008 Jun. p. 2765. (Medical Physics; vol. 35, no. 6). * 131. C Cheng, B Guo, S Ahmad, N Papanikolaou, C Shi. Dosimetric Impacts On Tissue Homogeneity Corrections in Electronic Brachytherapy 2008 Jun. p. 2735. (Medical Physics; vol. 35, no. 6). * 132. P Tynan, S Stathakis, C Esquivel, N Papanikolaou. Monte Carlo Modeling of Modulated Electron Beams Delivered Through a Photon Multileaf Collimator 2008 Jun. p. 2748. (Medical Physics; vol. 35, no. 6). * 133. T Roland, Y Liu, N Papanikolaou. 4D Planning From Multi Phase 3D Dose Distribution and Linear Transformation On a Single Phase Plan 2008 Jun. p. 2752. (Medical Physics; vol. 35, no. 6). * 134. M Smith, S Stathakis, G Swanson, M Joyner, A Gutiérrez, N Papanikolaou. Dosimetric Analysis of Real Time and Post Implantation Dosimetry for Prostate 2008 Jun. p. 2731. (Medical Physics; vol. 35, no. 6). * 135. N Papanikolaou, Y Liu, T Roland. Performance of Dual Layer Micro MLC Versus Standard Single Layer MLC for IMRT Delivery 2008 Jun. p. 2746. (Medical Physics; vol. 35, no. 6). * 136. J Xu, N Papanikolaou, C Shi, S Jiang. Dose Verification of 2D Synchronized DMLC IMRT Delivery to a Moving Target 2008 Jun. p. 2745. (Medical Physics; vol. 35, no. 6). * 137. S Rodriguez, C Esquivel, N Papanikolaou. Analysis of Scatter Dose On a Contralateral Breast as a Function of Surface Dose and Treatment Depth 2008 Jun. p. 2782. (Medical Physics; vol. 35, no. 6). * 138. J Xu, T Roland, C Shi, N Papanikolaou. 4D IMRT Quality Assurance (QA) by Dynamic Log File Analysis 2008 Jun. p. 2760. (Medical Physics; vol. 35, no. 6). 139. J Xu, T Roland, C Shi, N Papanikolaou. 4D IMRT Quality Assurance (QA) by Dynamic Log File Analysis 2008 Jun. p. 2760. (Medical Physics; vol. 35, no. 6). * 140. C Esquivel, S Rodriguez, N Papanikolaou. Analysis of Electron Cutout Factor Measurements 2008 Jun. p. 2767. (Medical Physics; vol. 35, no. 6). * 141. R Ramer, P Tynan, T Eng, N Papanikolaou. The Effect of Clothing On the Skin Dose During 6 MeV Total Skin Electron (TSE) Irradiation 2008 Jun. p. 2768. (Medical Physics; vol. 35, no. 6). * 142. Y Zhai, L Trache, R Tribble, Y Liu, C Shi, N Papanikolaou, V Iacob, J Hardy, G Tabacaru. New Method of An HPGe Detector Precise Efficiency Calibration with Experimental Measurements and Monte Carlo Simulations 2008 Jun. p. 2780. (Medical Physics; vol. 35, no. 6). * 143. C Buckey, S Stathakis, O Calvo, N Papanikolaou. Minimum Segment Size for the Collapsed Cone Convolution Superposition Algorithm 2008 Jun. p. 2749. (Medical Physics; vol. 35, no. 6). * 144. O Calvo, C Buckey, S Stathakis, A Gutiérrez, N Papanikolaou. Validation of Collapse Cone Convolution Superposition Algorithm Using Ion Chamber and Field Measurements 2008 Jun. p. 2749. (Medical Physics; vol. 35, no. 6). * 145. P Tynan, S Stathakis, N Papanikolaou. An Exploration of the Use of Custom Compensators for Modulated Electron Radiotherapy 2008 Jun. p. 2748. (Medical Physics; vol. 35, no. 6). * 146. D Giantsoudi, Y Liu, A Diaz, P Mavroidis, N Papanikolaou. Neutron Energy and Dose Considerations of CF252 Brachytherapy Sources for Various Geometries 2008 Jun. p. 2728. (Medical Physics; vol. 35, no. 6). * 147. V Sarkar, A Gutiérrez, S Stathakis, G Swanson, N Papanikolaou. A Graphical User Interface for Virtual Fluoroscopy to Aid in Prostate Seed Implant Verification 2008 Jun. p. 2680. (Medical Physics; vol. 35, no. 6). * 148. V Sarkar, C Shi, N Papanikolaou. The Effect of Number of Projections On the Accuracy of Volumetric Data Reconstructed Using Digital Tomosynthesis 2008 Jun. p. 2654. (Medical Physics; vol. 35, no. 6). * 149. A Gutiérrez, O Calvo, S Stathakis, P Rassiah-Szegedi, C Esquivel, N Papanikolaou. On the Quantification of the Dosimetric Accuracy of Collapsed Cone Convolution Superposition Algorithm for Small Lung Volumes Using IMRT 2008 Jun. p. 2631. (Medical Physics; vol. 35, no. 6). * 150. L Lin, C Shi, Y Liu, G Swanson, N Papanikolaou. Development and Evaluation of An Automatic Contour Propagation Method for 4D Radiotherapy 2008 Jun. p. 2637. (Medical Physics; vol. 35, no. 6). * 151. Swanson GP, Shi C, Mavroidis P., Stathakis S, Su F. C., Ramer R., Sarkar V., Ferreira B., Komisopoulos G., Giantsoudi D., Papanikolaou N. Radiobiologically Quantified Treatment Setup Uncertainties Based On Megavoltage (MV) CT Imaging 2008 Jun. p. 2822-2822. (Medical Physics; vol. 35, no. 6). 152. Papanikolaou N, Liu Y, Shi C, Rabar R, Shichman G. Radiation Therapy Target Tracking-4D Dynamic Intensity Modulated Radiation Treatment with Dual-Layer Micro Multileaf Collimators 2008 May. p. 21. (Computer-Integrated Surgery Medical Robotics and Medical Imaging; vol. 11). * 153. Papanikolaou N, Roland T, Stathakis S, Ramer R. Measurement and comparison of skin dose of prostate and head-and-neck patients treated on various IMRT delivery systems 2008 May. (Elsevier). * 154. Tynan T, Stathakis S, Papanikolaou N. Use of BEAMnrc and DOSXYZnrc to Model Modulated Electron Beams Delivered Through a Photon Multileaf Collimator 2008. (International Nuclear Codes Workshop). * 155. Papanikolaou N, Liu Y, Shi C, Tynan P. Dosimetric characteristics of dual-layer multileaf collimation for small-field and intensity-modulated radiation therapy applications 2008. (Medical Physics; vol. 9, no. 2). * 156. Papanikolaou N, Liu Y, Su F, Szegedi M, Lin L, Shi C. A phantom-based evaluation of a real-time tracking micro MLC delivery 2008. (International Journal of Biomedical Engineering and Technology). * 157. Papanikolaou N, Shi C, Penagaricano J,. Comparison of IMRT treatment plans between LINAC and helical tomotherapy based on integral dose and inhomogeneity index 2008. p. 215. (Medical Physics; vol. 33, no. 3). * 158. Buckey CR, Su F, Stathakis S, N. Papanikolaou. Are current IMRT plans superior to 3D conformal therapy for prostate cancer? A dosimetric comparison 2008. p. 579. (Int. J. Radiat. Oncol. Biol. Phys.; vol. 72, no. 1). * 159. Gutierrez AN, Mavroidis P, Su F, Giantsoudi, S. Stathakis, G. Komisopoulos, C. Shi, G. Swanson, C. Ha, N. Papanikolaou. Daily megavoltage CT registration on adaptive radiotherapy with helical tomotherapy 2008. p. 581. (Int. J. Radiat. Oncol. Biol. Phys; vol. 72, no. 1). * 160. Gutierrez AN, Mavroidis P, Su F, Giantsoudi, S. Stathakis, G. Komisopoulos, C. Shi, G. Swanson, C. Ha, N. Papanikolaou. Daily megavoltage CT registration on adaptive radiotherapy with helical tomotherapy 2008. p. 581. (Int. J. Radiat. Oncol. Biol. Phys.; vol. 72, no. 1). * 161. Buckey CR, Su F, Stathakis S, N. Papanikolaou. Are current IMRT plans superior to 3D conformal therapy for prostate cancer? A dosimetric comparison 2008. p. 579. (Int. J. Radiat. Oncol. Biol. Phys.; vol. 72, no. 1). * 162. Papanikolaou N, Stathakis S, Shi C, A. Gutierrez, C. Esquivel, P. Mavroidis, C. Ha. Patient setup correction in treating head and neck cancer with helical tomotherapy 2008. p. 602. (Int. J. Radiat. Oncol. Biol. Phys.; vol. 72, no. 1). * 163. Komisopoulos G, Mavroidis P, Papanikolaou N. Inhomogeneity regularization methods in treatment plan optimization 2008. p. 603. (Int. J. Radiat. Oncol. Biol. Phys; vol. 72, no. 1). * 164. Delichas MG, Mavroidis P, Ferreira BC, N. Papanikolaou. Comparison of 3D-CRT, MLC-based IMRT and helical tomotherapy for lung cancer radiotherapy 2008. p. 634. (Int. J. Radiat. Oncol. Biol. Phys.,; vol. 72, no. 1). * 165. Calvo OI, Buckey C, Stathakis S, A. Guiterrez, N. Papanikolaou. Analysis of the accuracy of the collapse cone convolution superposition algorithm using ion chamber and field measurements for small lung lesions 2008. p. 635. (Int. J. Radiat. Oncol. Biol. Phys.; vol. 72, no. 1). * 166. S. Stathakis1, C. Shi, P. Mavroidis, D. Giantsoudi, G. Swanson, C. Esquivel, B. C. Ferreira, G. Komisopoulos, N. Papanikolaou. Use of megavoltage CT imaging for quantifying treatment setup uncertainties 2008. p. 660. (Int. J. Radiat. Oncol. Biol. Phys; vol. 72, no. 1). * 167. F. Su, P. Mavroidis, G. Swanson, S. Stathakis, C. Buckey, N. Papanikolaou. Treatment planning for prostate cancer: Biologically quantitative comparisons among conventional radiotherapy and three IMRT delivery techniques 2008. p. 671. (Int. J. Radiat. Oncol. Biol. Phys.; vol. 72, no. 1). * 168. Siddiqui F., Shi C, Papanikolaou N, Thomas C.R., Fuss M.. MVCT Image-guidance Derived Bony Setup Accuracy for Supine and Prone Pelvic Radiation Therapy 2007 Nov. p. S294-S295. (International Journal of Radiation Oncology*Biology*Physics). * 169. Fuss M., Shi C, Papanikolaou N. Mega-Voltage CT (MVCT) Image Guidance for Abdominal and Retroperitoneal IMRT Target Volumes 2007 Nov. p. S296-S297. (2007 ASTRO Image Guided Radiotherapy (IGRT II) Symposium Program). * 170. Liu Y, Shi C, Lin L., Papanikolaou N. 4D Dynamic Intensity Modulated Radiation Treatment With DualLayer Micro Multileaf Collimators 2007 Nov. p. S697-S697. (International Journal of Radiation Oncology*Biology*Physics; vol. 69, no. 3). * 171. Xu J., Shi C, Jiang S., Papanikolaou N. Correcting for Intra-Fraction Breathing Motion Based on Offline and Online Analysis of Respiratory Patterns 2007 Nov. p. S704-S705. (International Journal of Radiation Oncology*Biology*Physics; vol. 69, no. 3). * 172. Su F.C., Shi C, Fuss M., Papanikolaou N. Dosimetric Effects of Gantry Angle Miss-alignment during Helical Tomotherapy Treatment 2007 Nov. p. S723-S723. (International Journal of Radiation Oncology*Biology*Physics; vol. 69, no. 3). * 173. Lin L., Shi C, Swanson GP, Papanikolaou N. Quantification Of Inter-fractional Organ Motion And Deformation Using Megavoltage ComputedTomography Images From Helical Tomotherapy 2007 Nov. p. S527-S528. (International Journal of Radiation Oncology*Biology*Physics; vol. 69, no. 3). * 174. Sarkar V., Shi C, Rassiah P., Stathakis S, Papanikolaou N. A Feasibility Study using a CCD-based Electronic Portal Imaging Device for Digital Tomosynthesis 2007 Nov. p. S705-S706. (International Journal of Radiation Oncology*Biology*Physics; vol. 69, no. 3). * 175. Sarkar V, Shi C, Rassiah P, Stathakis S, Papanikolaou N. A Feasibility Study Using a CCD-based Electronic Portal Imaging Device for Digital Tomosynthesis 2007 Oct. (IJROBP; vol. 69, no. 3S). * 176. Swanson GP, Stathakis S, Su F.C., Shi C, Mavroidis P, Papanikolaou N. Treatment planning for prostate: a quantitative comparison between 3DRTP and three IMRT delivery techniques 2007 Sep. (9th biennial ESTRO Meeting). * 177. Rassiah P., Lin BC, Szegedi M., Shi C, Papanikolaou N. The effect of 4DCT and static image data set on dose calculation and optimization 2007 Sep. (9th biennial ESTRO Meeting). * 178. Shi C, Stathakis S, Ramer C., Sarkar V., Giantsoudi D., Mavroidis P., Papanikolaou N. Treatment setup uncertainties as quantified based on daily megavoltage (MV) CT imaging 2007 Sep. (9th biennial ESTRO Meeting). * 179. Liu YX, Shi CY, Lin L, Papanikolaou N. A 4D dynamic IMRT plan delivery and evaluation with a duallayer micro multileaf collimators 2007 Sep. (9th biennial ESTRO Meeting). * 180. Lin L., Shi C, Liu Y, Papanikolaou N. A phantom study of 4D delivery methodologies: gating vs. tracking 2007 Sep. (9th biennial ESTRO Meeting). * 181. Giantsoudi D., Stathakis S, Shi C, Swanson GP, Papanikolaou N. Investigation of the dosimetric effect of daily megavoltage CT registration techniques on adaptive radiotherapy with helical Tomotherapy 2007 Sep. (9th biennial ESTRO Meeting). 182. Papanikolaou N, Sarkar V, Lin L, Shi C. Quality assurance of the multileafcollimator with helical tomotherapy: design and implementation 2007 Jul. p. 2949. (Medical Physics; vol. 34, no. 7). * 183. Su F, Shi C, Stathakis S, Esquivel C, Liu Y, Papanikolaou N. Dosimetric Characteristics of GAFCHROMIC EBT Film for Therapeutic Electron Beams 2007 Jun. p. 2610. (Med Phys; vol. 34, no. 6). * 184. Liu Y, Shi C, Stathakis S, Papanikolaou N. Dose Engine Verification of a Dual Level MMLC-Based Treatment Planning System Benchmarked by MCNPX and Pinnacle 2007 Jun. p. 2600-2600. (Medical Physics; vol. 34, no. 6). * 185. Giantsoudi D, Liu Y, Stathakis S, Shi C, Papanikolaou N. Monte Carlo Modeling and Commissioning of a Bi-Directional Micro Multileaf Collimator 2007 Jun. p. 2472. (Med Phys; vol. 34, no. 6). * 186. Lin L, Shi C, Liu Y, Papanikolaou N. Evaluation of a Dual-Level Micro Multileaf Collimator in Reducing Dose Undulation and Leakage 2007 Jun. p. 2449. (Med Phys; vol. 34, no. 6). * 187. Papanikolaou N, Liu Y, Stathakis S, Shi C. Development of a Toolkit for Dose Verification and Comparison Between Treatment Planning Systems 2007 Jun. p. 2435. (Med Phys; vol. 34, no. 6). * 188. Xu J, Shi C, Jiang S, Papanikolaou N. A new quantitative quality assurance evaluation parametergamma plus 2007 Jun. (the XVth International Conference on the Use of Computers in Radiation Therapy). * 189. Lin L., Shi C, Papanikolaou N. Development and application of an integrated treatment planning platform for 4D radiotherapy 2007 Jun. (the XVth International Conference on the Use of Computers in Radiation Therapy). * 190. Liu Y, Shi C, Papanikolaou N. A Monte Carlo simulation and dosimetric analysis of a dual bank micro MLC 2007 Jun. (the XVth International Conference on the Use of Computers in Radiation Therapy). * 191. Su FC, Shi C, Stathakis S, Papanikolaou N. Application of GAFCHROMIC® EBT film for in vivo dosimetry with total body irradiation (TBI) radiotherapy 2007 Jun. p. 2420-2420. (49th Annual Meeting of the American Association of Physicists in Medicine, July 22-26 2007, Minneapo; vol. 34, no. 6). * 192. Shi C, Stathakis S, Eller C., Papanikolaou N. Predictive analysis of target wear for a TomoTherapy unit 2007 Jun. p. 2483-2483. (Medical Physics; vol. 34, no. 06). * 193. Shi C, Sarkar V., Lin L., Papanikolaou N. Quality assurance protocol of the HiArt Tomotherapy MLC: design and implementation 2007 Jun. p. 2561-2561. (Medical Physics; vol. 34, no. 06). * 194. Su F.C., Shi C, Stathakis S, Esquivel C, Papanikolaou N. Dosimetric characteristics of GAFCHROMIC EBT film for therapeutic electron beams 2007 Jun. p. 2610-2610. (Medical Physics; vol. 34, no. 06). * 195. Sarkar V., Shi C, Rassiah-Szegedi P., Stathakis S, Papanikolaou N. A feasibility study using a CCDbased EPID for digital tomosynthesis 2007 Jun. p. 2378-2378. (Medical Physics; vol. 34, no. 06). * 196. Lin L., Shi C, Xu X.G., Swanson GP, Papanikolaou N. APT4D, an integrated treatment planning platform for 4D radiotherapy 2007 Jun. p. 2632-2632. (Medical Physics; vol. 34, no. 06). * 197. Lin L., Shi C, Liu Y, Swanson GP, Papanikolaou N. Development and evaluation of an automatic contour propagation method for 4D radiotherapy 2007 Jun. p. 2637-2638. (Medical Physics; vol. 34, no. 6). * 198. Roland T., Ramer C., Rassiah-Szegedi P., Nicol K., Stathakis S, Shi C, Papanikolaou N. Skin dose determination for helical and serial tomotherapy and MLC based IMRT 2007 Jun. p. 2489-2489. (Medical Physics; vol. 34, no. 06). * 199. Xu J., Shi C, Jiang S., Papanikolaou N. A new quantitative quality assurance evaluation parameter (gamma plus) and its clinical assessment 2007 Jun. p. 2407-2407. (Medical Physics; vol. 34, no. 06). * 200. Papanikolaou N, Eller C., Esquivel C, Shi C, Mavroidis P., Stathakis S. Investigation of the use of transmission type detectors for daily IMRT patient dose reconstruction 2007 Jun. p. 2464-2465. (Medical Physics; vol. 34, no. 06). * 201. Liu H., Rassiah-Szegedi P, Stathakis S, Shi C, Papanikolaou N. Comparison between collapsed cone convolution and Monte Carlo dose distributions for small lung lesions 2007 Jun. p. 2557-2557. (Medical Physics; vol. 34, no. 06). * 202. Tynan P., Stathakis S, Esquivel C, Shi C, Papanikolaou N. Effective source distance and virtual source location for MLC based electron radiotherapy 2007 Jun. p. 2400-2401. (Medical Physics; vol. 34, no. 06). * 203. Tynan P., Stathakis S, Esquivel C, Shi C, Papanikolaou N. Surface dose determination for modulated electron radiotherapy 2007 Jun. p. 2492-2492. (Medical Physics; vol. 34, no. 06). * 204. Mavroidis P., Ferreira B., Shi C, Lind B., Stathakis S, Papanikolaou N. Comparing the expected effectiveness of helical tomotherapy and MLC-based IMRT using biological measures 2007 Jun. p. 2550-2550. (Medical Physics; vol. 34, no. 06). * 205. Papanikolaou N, Liu Y, Stathakis S, Shi C. Development of a toolkit for dose verification and comparison between treatment planning systems 2007 Jun. (Medical Physics; vol. 34, no. 06). * 206. Liu Y, Shi C, Lin L., Papanikolaou N. Evaluation of a dual-level micro multileaf collimator in reducing dose undulation and leakage 2007 Jun. p. 2449-2449. (Medical Physics; vol. 34, no. 06). * 207. Liu Y, Giantsoudi D., Shi C, Papanikolaou N. Monte Carlo modeling and commissioning of a bidirectional micro multileaf 2007 Jun. p. 2472-2472. (Medical Physics; vol. 34, no. 06). * 208. Su FC, Shi CY, Papanikolaou N. Dosimetric effects of gantry angle misalignment during helical Tomotherapy treatment 2007 May. p. 163-163. (the Annual Meeting of American College of Medical Physics; vol. 8, no. 3). * 209. Yan YL, Jiang HY, Weng XJ, Penagaricano J, Moros E, Papanikolaou N, Shi C, Novak P, Ratanatharathorn V. A comprehensive patient-specific IMRT quality assurance procedure on Hi-Art Tomotherapy® unit 2006 Jun. p. 2250-2250. (Medical Physics; vol. 33, no. 6). * 210. Lin L., Shi C, Salter B., Fuss M., Papanikolaou N. Quantification of respiration-induced dosimetric impact on liver for abdominal radiotherapy 2006 Jun. p. 2174-2174. (Medical Physics; vol. 33, no. 06). * 211. Papanikolaou N, Shi C. A useful tool developed for trial comparison and developing composite plan between Tomotherapy and Pinnacle 2006 Jun. p. 2065-2065. (Medical Physics; vol. 33, no. 06). * 212. Shi C, Penagaricano J., Yan Y. L., Papanikolaou N. Application of the Post-Processing Dose Tool (PPD) to Dosimetrically Compare Gamma Knife and Hi Art Tomotherapy 2006 Jun. p. 2072-2072. (Medical Physics; vol. 33, no. 06). * 213. Shi C, Yan Y. L., Wu C., Papanikolaou N. Inter-institution comparison of patient quality assurance analysis for Tomotherapy 2006 Jun. p. 2113-2113. (Medical Physics; vol. 33, no. 06). * 214. Weng XJ, Yan YL, Ratanatharathorn V, Penagaricano J, Berkley L., Shi C, Youssef E., Papanikolaou N. Treatment simulation for 4D image guided radiation therapy 2005 Jun. p. 1936-1936. (Med Phys; vol. 32). * 215. Weng X. J., Yan Y. L., Ratanatharathorn V, Penagaricano J, Berkley L, Shi C, Youssef E, Papanikolaou N. Initial experiences with a dynamic treatment simulation system 2005 Jun. p. 21632163. (Med Phys; vol. 32). * 216. Wu C, Shi C, Yang C, Papanikolaou N, Ratanatharathorn V, Purdy JA, Vijaykumar S. A comparison between BAT and Tomotherapy MVCT on inter-fractional prostate localization 2005 Jun. p. 1927- 1927. (Medical Physics; vol. 32, no. 6). * 217. Shi C, Papanikolaou N, Yan Y. L., Weng X.. An analytic approach to film based absolute dosimetry for IMRT 2005 Jun. p. 1980-1980. (Medical Physics; vol. 32, no. 06). * 218. Papanikolaou N, Shi C, Yan Y. L., Weng X. J.. Patient quality assurance analysis for Tomotherapy 2005 Jun. p. 1986-1986. (Medical Physics; vol. 32, no. 06). * 219. Papanikolaou N, Hadjigeorgiou K, Guiterrez L, Yan Y, Wu C. Clinical Implementation of Beam Angle Optimization in IMRT 2003. p. 1490. (Medical Physics; vol. 30, no. 6). * 220. Yan Y, Papanikolaou N, Penagaricano J, Wu C, Ratanatharathorn V. Artificial Landmark Technique for Image Registration in Radiation Therapy 2003. p. 1496. (Medical Physics; vol. 30, no. 6). * 221. Gutierrez L, Papanikolaou N, Yan Y, Wu C. Monte Carlo Simulation of a Total Skin Electron Technique 2003. p. 1515. (Medical Physics; vol. 30, no. 6). * 222. Papanikolaou N, Gutierrez L, Yan Y, Wu C, Penagaricano J, Ratanatharathorn V. The effect of tissue inhomogeneity in dose based and biologically based IMRT 2003. (Radiotherapy and Oncology; vol. 68). * 223. Papanikolaou N, Penagaricano J, Ratanatharathorn V. The effect of lung inhomogeneity in IMRT 2001. p. 302. (Int Journ Rad Onc. Biol Phys; vol. 50, no. s1). * 224. Johnson J, Papanikolaou N, Mackie TR. Small field dosimetry with film 1996. p. 1071. (Med. Phys.; vol. 23, no. 6). * 225. Webster J, Papanikolaou N. Dosimetric evaluation and modeling of a dynamic wedge 1996. p. 1156. (Med. Phys; vol. 23, no. 6). * 226. Easterling S, Papanikolaou N, Meigooni A. Quantitative analysis of dose in an anthropomorphic lung phantom using thermoluminescent dosimetry, convolution algorithm, and radiochromic film 1996. p. 1154. (Med Phys; vol. 23, no. 6). * 227. Papanikolaou N, Heintz B. Speed and accuracy considerations for convolution algorithms in 3D treatment planning 1996. p. 1037. (Med. Phys; vol. 23, no. 6). * 228. Papanikolaou N. Extension of the convolution/superposition based algorithms to include atomic number effects 1995. p. 977. (Med. Phys.; vol. 22, no. 6). * 229. McNutt T, Mackie TR, Reckwerdt P, Papanikolaou N, Paliwal B. Modeling portal dose using the convolution/superposition methods 1995. p. 992. (Med. Phys; vol. 22, no. 6). * 230. Mackie TR, Papanikolaou N, Thomadsen B, Reckwerdt P, Holmes T, Sanders C. Monitor unit calculations for convolution and Monte Carlo dose planning systems 1994. (Med Phys; vol. 21, no. 6). * 231. Papanikolaou N. Separation of photon beam output factor into its phantom and machine generated components using a convolution code 1994. p. 877. (Med. Phys; vol. 21, no. 6). * 232. Papanikolaou N, Mackie TR. The extended phantom concept: modeling the treatment machine modifiers and portal imaging dosimetry system using a convolution code 1994. p. 877. (Med Phys; vol. 21, no. 6). * 233. Papanikolaou N, Mackie TR. Generation of Photon convolution kernels using a Monte Carlo Code for use in radiotherapy treatment planning and cavity theory 1993. (Med Phys; vol. 20, no. 3). * 234. Papanikolaou N, Paliwal B. A Monte Carlo study of the dosimetric characteristics of intraoperative radiotherapy cones 1993. (Med Phys; vol. 20, no. 3). * 235. Papanikolaou N, Mackie, TR. A new convolution approach for the generation of polyenergetic photon beam dose distributions 1992. (Med. Phys; vol. 19, no. 3). * 236. Mackie TR, Reckwerdt P, Holmes T, Papanikolaou N, Simpkin D. The concept of secondary radiation equilibrium 1992. (Med Phys; vol. 19, no. 3). * 237. Meger-Wells CM, Mackie TM, Podgorsak MB, Papanikolaou N, Holmes M, Reckwerdt P, Attix FH. Electron dose distribution measurements in inhomogeneous phantoms using a plastic scintillation detector 1992. (Med Phys; vol. 19, no. 3). 238. Gutiérrez AN. Delivery Angle Dependency On Treatment Plan Quality for Whole Breast Radiotherapy Using Helical Tomotherapy p. 2658-2658. (Medical Physics; vol. 36, no. 6). Book Chapter 1. Papanikolaou N, Gutiérrez AN, Stathakis S, Shi C. Self-contained accelerator systems – Tomotherapy In: Papanikolaou N, Gutiérrez AN, Stathakis S, Shi C. Quality Assurance and Safety for Radiotherapy. 2009. * 2. Shi C, Fuss M., Papanikolaou N, X. Xu. External Photon Beam (IGRT) Treatment Planning In: Shi C, Fuss M., Papanikolaou N, X. Xu. Handbook of Anatomical Models for Radiation Dosimetry. http://www.crcpress.com/ecommerce_product/product_detail.jsf?catno=C5979&isbn=0000000000000: TAYLOR & FRANCIS; 2009. Journal Article * 1. Su F., Shi C, Mavroidis P., Rassiah-Szegedi P., Papanikolaou N. Evaluation on Lung Cancer Patients‘ Adaptive Planning of TomoTherapy Utilizing Radiobiological Measures and Planned Adaptive Module Journal of Radiotherapy in Practice 2009 Dec;8(4):185-194. 2. Stathakis S, Esquivel C, Gutierrez A, Buckey CR, Papanikolaou N. Treatment planning and delivery of IMRT using 6 and 18MV photon beams without flattening filter. Appl Radiat Isot 2009 Sep;67(9):16291637. * 3. Xu J., Papanikolaou N, Shi C, Jiang S.. Synchronized moving aperture radiation therapy (SMART): superimposing tumor motion on IMRT MLC leaf sequences under realistic delivery conditions Phys. Med. Biol. 2009 Aug;54:4993-5007. * 4. Roland T, Mavroidis P, Gutierrez A, Goytia V,and Papanikolaou N. A radiobiological analysis of the effect of 3D versus 4D image-based planning in lung cancer radiotherapy Phys. Med. Biol. 2009 Aug;54:5509-5523. * 5. Sarkar V., Shi C, Rassiah-Szegedi P., Diaz AZ, Eng TY, Papanikolaou N. The effect of a limited number of projections and reconstruction algorithms on the image quality of megavoltage digital tomosynthesis JOURNAL OF APPLIED CLINICAL MEDICAL PHYSICS 2009 Jul;10(3):155-172. * 6. Mavroidis P., Stathakis S, Gutiérrez AN, Esquivel C, Shi C, Papanikolaou N. Expected clinical impact of the differences between planned and delivered dose distributions in helical tomotherapy for treating head and neck cancer using helical megavoltage CT images JOURNAL OF APPLIED CLINICAL MEDICAL PHYSICS 2009 Jul;10(3):125-139. * 7. Stathakis S, Esquivel C, Gutiérrez AN, Shi C, Papanikolaou N. Dosimetric evaluation of multi-pattern spatially fractionated radiation therapy using a multi-leaf collimator and collapsed cone convolution superposition dose calculation algorithm. Appl Radiat Isot 2009 Jul;67:1939-1944. 8. Sarkar V, Gutierrez AN, Stathakis S, Swanson GP, Papanikolaou N. A virtual fluoroscopy system to verify seed positioning accuracy during prostate permanent seed implants. J BUON 2009 Jul;14(3):447-450. * 9. Lin L., Shi C, Eng TY, Swanson GP, Fuss M., Papanikolaou N. Evaluation of inter-fractional setup shifts for site-specific Helical Tomotherapy treatments Technology in Cancer Research and Treatment 2009 Apr;8(2):115-122. * 10. Giantsoudi D., Stathakis S, Liu Y, Shi C, Papanikolaou N. Monte Carlo Modeling and Commissioning of a Dual-layer Micro Multileaf Collimator Technology in Cancer Research and Treatment 2009 Apr;8(2):105-114. * 11. Liu Y, Shi C, Lin BC, Ha CS, Papanikolaou N. Delivery of four-dimensional radiotherapy with TrackBeam for moving target using a dual-layer MLC: dynamic phantoms study JOURNAL OF APPLIED CLINICAL MEDICAL PHYSICS 2009 Apr:21-33. 12. Stathakis S, Roland T, Papanikolaou N, Li J, Ma C. A prediction study on radiation-induced second malignancies for IMRT treatment delivery. Technol Cancer Res Treat 2009 Apr;8(2):141-148. * 13. Mavroidis P., Ferreira B.C., Shi C, Delichas M.G., Lind B.K., Papanikolaou N. Comparison of the Helical Tomotherapy and MLC-based IMRT Radiation Modalities in Treating Brain and Cranio-spinal Tumors Technology in Cancer Research & Treatment 2009 Feb;8(1):3-14. * 14. Sarkar V., Shi C, Rassiah-Szegedi P., Diaz AZ, Eng TY, Papanikolaou N. A feasibility study on the use of digital tomosynthesis with individually-acquired megavoltage portal images for target localization J BUON. 2009 Jan;14(1):103-108. * 15. Roland T, Papanikolaou N, Esquivel C, Stathakis S. On the evaluation of the relative sensitivity of commercial TLD readers using characterized TLD chips J Buon 2008 Dec;13(4) * 16. Sarkar V, Papanikolaou N, Stathakis S. A Monte Carlo Model for Independent Dose Verification in Serial Tomotherapy Technology in Cancer Research and Treatment 2008 Oct;7(5):385 17. Roland T, Esquivel C, Stathakis S, Papanikolaou N. On the evaluation of the relative sensitivity of commercial TLD readers using well characterized TLD chips. J BUON 2008 Oct;13(4):547-551. * 18. Su F, Shi C, Crownover R, Swanson G, Papanikolaou N. Dosimetric Impacts of Gantry Angle Misalignment on Prostate Cancer Treatment using Helical Tomotherapy International Journal of Radiation Oncology Biology Physics 2008 Aug;7(4):269 * 19. Su F., Shi C, Crownover RL, Swanson GP, Papanikolaou N. Dosimetric impacts of gantry angle misalignment on prostate cancer treatment using helical tomotherapy Technology in Cancer Research and Treatment 2008 Aug;7(4):287-293. * 20. Siddiqui F., Shi C, Papanikolaou N, Fuss M.. Image-guidance protocol comparison: Supine and prone set-up accuracy for pelvic radiation therapy Acta Oncol. 2008 Jun;47(7):1344-1350. * 21. Liu Y, Shi C., Lin L., Tabar R., Shichman G., Papanikolaou N.. Radiation therapy target tracking - 4D dynamic intensity modulated radiation treatment with dual-layer micro multileaf collimators Computerintegrated surgery medical robotics, and medical imaging 2008 May:21-26. * 22. Shi C, Peñagarícano J, Papanikolaou N. Comparison of IMRT Treatment Plans between Linac and Helical Tomotherapy based on Integral Dose and Inhomogeneity Index Medical Dosimetry 2008 Apr;33(3):215-212. * 23. Shi C, Penagaricano J, Papanikolaou N. Comparison of IMRT treatment plans between linac and helical TomoTherapy based on integral dose and inhomogeneity index Med Dosi 2008 Apr;33(3):215 * 24. Lin L., Shi C, Liu Y, Swanson GP, Papanikolaou N. Development of a Novel Post-processing Treatment Planning Platform for 4D Radiotherapy Technology in Cancer Research and Treatment 2008 Apr;7(2):125-132. * 25. Su F.C., Shi C, Papanikolaou N. Clinical application of GAFCHROMIC EBT film for in vivo dose measurements of total body irradiation radiotherapy Appl Radiat Isot. 2008 Mar;66(3):389-394. * 26. Liu Y, Shi C, Tynan P., Papanikolaou N. Dosimetric characteristics of dual-layer multileaf collimation for small-field and intensity-modulated radiation therapy applications Journal of Applied Clinic Medical Physics 2008 Mar;9(2):30-45. * 27. Lin L, Shi C, Liu Y, Swanson G, Papanikolaou N. Development of a Novel post-processing Treatment Planning Platform for 4D Radiotherapy Technol Cancer Res Treat. 2008 Mar;7(2):125-132. * 28. Mavroidis P, Ferreira B, Shi C, Lind K, Papanikolaou N. Comparison of the 3D-Confornal, Helical Tomotherapy and MLC based IMRT Radiation Modalities using Radiobiological Measures BUNC 2008 Mar;10(3):98-102. * 29. Liu Y, Su F., Szegedi M., Lan L., Shi C, Papanikolaou N. A phantom-based evaluation of a real-time tracking micro MLC delivery International Journal of Biomedical Engineering and Technology 2008 * 30. Su F, Shi C, Papanikolaou N. Clinical application of GAFCHROMIC EBT film for in vivo dose measurements of total body irradiation radiotherapy Applied Radiation and Isotopes 2008;66:389-394. * 31. Liu Y, Shi C, Tynan T, Papanikolaou N. Dosimetric Characteristics of dual-layer multileaf collimation for small field and IMRT applications Journal of Applied Clinical Medical Physics 2008;9(2) 32. Ramer R, Holder A, Papanikolaou N.. Comparison of prostate treatment options using Data Envelopment Analysis (DEA) Int. J. Radiat. Oncol. Biol. Phys 2008;72(1):481 * 33. Mavroidis P., Costa-Ferreira B., Shi C, Lind B. K., Papanikolaou N. Comparison of the 3D-conformal, helical tomotherapy and multileaf collimators-based intensity modulated radiotherapy modalities using radiobiological measures J BUON. 2008 Jan;13(1):75-86. * 34. Xu J, Shi C, Jiang SB, Papanikolaou N. Correcting for Intra-Fraction Breathing Motion Based on Offline and Online Analysis of Respiratory Patterns IJROBP 2007 Oct;69(3S) * 35. Su F, Shi C, Fuss M, Papanikolaou N. Dosimetric Effects of Gantry Angle Mis-alignment during Helical Tomotherapy Treatment IJROBP 2007 Oct;69(3S) * 36. Lin L, Shi C, Swanson GP, Papanikolaou N. Quantification of Inter-Fractional Organ Motion and Deformation using Megavoltage Computed Tomography Images from Helical Tomotherapy IJROBP 2007 Oct;69(3S) * 37. Fuss M, Shi C, Papanikolaou N. Mega-voltage CT (MVCT) Image Guidance for Abdominal and Retroperitoneal IMRT Target Volumes IJROBP 2007 Oct;69(3S) * 38. Siddiqui F, Shi C, Papanikolaou N, Fuss M. MVCT Image Guidance Derived Bony Setup Accuracy for Supine and Prone Pelvic Radiation Therapy IJROBP 2007 Oct;69(3S) * 39. Giantsoudi D, Stathakis S, Shi C, Swanson GP, Papanikolaou N. Investigation of the Dosimetric Effect of Daily Megavoltage CT Registration Techniques on Adaptive Radiotherapy with Helical Tomotherapy Radiotherapy and Oncology 2007 Sep;84 * 40. Rassiah P, Szegedi M, Lin BC, Liu H, Shi C, Papanikolaou N. The Effect of 4DCT and Static Image Data Set on Dose Calculation and Optimization Radiotherapy and Oncology 2007 Sep * 41. Giantsoudi D, Stathakis S, Ramer C, Mavroidis P, Papanikolaou N. Treatment Setup Uncertainties As Quantified Based On Daily Megavoltage(MV)CT Imaging Radiotherapy and Oncology 2007 Sep * 42. Stathakis S, Mavroidis P, Papanikolaou N. Evaluation of Dose Delivery Variations in Helical Tomotherapy using Helical Megavoltage CT Radiotherapy and Oncology 2007 Sep;84 * 43. Ramer R, Roland T, Stathakis S, Papanikolaou N. Skin Dose Profiling for IMRT Patients Using Gafchromic EBT films Radiotherapy and Oncology 2007 Sep;84 * 44. Swanson GP, Stathakis S, Su S, Shi C, Mavroidis N, Papanikolaou N. Treatment Planning for Prostate: A quantitative comparison between 3DRTP and three IMRT Delivery Techniques Radiotherapy and Oncology 2007 Sep * 45. Nguyen L, Szedegi W, Esquivel C, Papanikolaou N, Rassiah P. Conformal Inverse Planned Arcs vs. IMRT Arcs for SBRT Lung Lesions Radiotherapy and Oncology 2007 Sep;84 * 46. Papanikolaou N, Costa Ferrerira B, Shi C, Lind B K, Mavroidis P. Expected Effectiveness Of Conformal, Helical Tomotherapy and MLC-Based IMRT in Lung Cancer Radiotherapy Radiotherapy and Oncology 2007 Sep * 47. Mavroidis P, Papanikolaou N, Ferrerira B Costa, Shi C, Lind B K. The Impact of Patient Positioning, Breathing, and Radiation Pneumonitis Scoring in the Optimization Of Breast Cancer Radiotherapy Radiotherapy and Oncology 2007 Sep;84 * 48. Papanikolaou N, Battista J, Boyer A, Kappas C, Klein E, Mackie T, Sharpe J, Van Dyke J. Tissue Inhomogeneity Corrections for Megavoltage Photon Beams. Report No. 85 2007 Aug;2004 * 49. Sarkar V., Lin L., Shi C, Papanikolaou N. Quality Assurance of the multileaf collimator with helical Tomotherapy: design and implementation Med Phys 2007 Jul;34(7):2949-2956. * 50. Mavroidis P., Ferreira B. C., Shi C, Lind B. K., Papanikolaou N. Treatment plan comparison between helical tomotherapy and MCL-based IMRT using radiobiological measures Phys Med Biol 2007 Jan;52:3817-3836. * 51. Papanikolaou N. Heterogeneity Corrections in the IMRT Era Med Phys 2007;34:2617 * 52. Rassiah P, Stathakis S, Szegedi M, Esquivel C, Papanikolaou N. Monte Carlo Flattening Filter Free MIMiC Based IMRT Planning Med Phys 2007;34:2575 * 53. Lin L, Shi C, Sarkar V, Papanikolaou N. Quality Assurance Protocol of the HiArt Tomotherapy MLC: Design and Implementation Med Phys 2007;34:2561 * 54. Rassiah P, Stathakis S, Shi C, Liu H, Papanikolaou N. Comparison Between Collapsed Cone Convolution and Monte Carlo Dose Distributions for Small Lung Lesions Med Phys 2007;34:2557 * 55. Mavroidis P, Ferreira B, Shi C, Lind B, Stathakis S, Papanikolaou N. Comparing the Expected Effectiveness of Helical Tomotherapy and MLC-Based IMRT Using Biological Measures Med Phys 2007;34:2600 * 56. Papanikolaou N. Imaging for Planning/Verification: In-Room Imaging Med Phys 2007;34:2537 * 57. Tynan P, Shi C, Stathakis S, Esquivel C, Papanikolaou N. Surface Dose Determination for Modulated Electron Radiotherapy Med Phys 2007;34:2537 * 58. Roland T, Ramer C, Rassiah P, Nicol K, Stathakis S, Shi C, Papanikolaou N. Skin Dose Determination for Helical and Serial Tomotherapy and MLC Based IMRT Med Phys 2007;34:2489 * 59. Shi C, Stathakis S, Eller C, Papanikolaou N. Predictive Analysis of Target Wear for a TomoTherapy Unit Med Phys 2007;34 * 60. Giantsoudi D, Eller C, Stathakis S, Papanikolaou N. Patterns of Failure for Ion Chamber Based IMRT QA Med Phys 2007;34:2479 * 61. Stathakis S, Sarkar V, Rassiah P, Mavroidis P, Papanikolaou N. Monte Carlo Based Dose Verification for Serial Tomotherapy Med Phys 2007;34:2470 * 62. Stathakis S, Eller C, Esquivel C, Shi C, Mavroidis P, Papanikolaou N. Investigation of the Use of Transmission Type Detectors for Daily IMRT Patient Dose Reconstruction Med Phys 2007;34:2464 * 63. Mavroidis P, Ferreira B, Swensson R, Lind B, Brahme A, Papanikolaou N. Expected Clinical Impact of the Differences Between Planned and Delivered IMRT Dose Distributions Med Phys 2007;34:2452 * 64. Esquivel C, Eller C, Rassiah P, Mavroidis P, Papanikolaou N. Evaluation of the Performance of an Implantable Dosimeter Used in 4D-Gated Radiotherapy Med Phys 2007;34:2452 * 65. Esquivel C, Beyer G, Childress C, Rassiah P, Papanikolaou N. Evaluation and Performance Characteristics of an Implantable Dosimeter with the TomoTherapy Hi-Art System Med Phys 2007;342448. * 66. Rassiah P, Fuss M, Sheifh-Bagheri D, Szegedi M, Papanikolaou N, Stathakis S. Dosimetric Evaluation of a Monte Carlo IMRT Treatment Planning System with the MIMiC Med Phys 2007;34:2441 * 67. Su F, Shi C, Stathakis S, Papanikolaou N. Application of GAFCHROMIC CBT Film for in Vivo Dosimetry with Total Body Irradiation (TBI) Radiotherapy Med Phys 2007;34:2420 * 68. Tynan P, Stathakis S, Esquivel C, Shi C, Jiang S, Papanikolaou N. Effective Source Distance and Virtual Source Location for MLC Based Electron Radiotherapy Med Phys 2007;34:2400 * 69. Pappas E, Maris TG, Papadakis A, Zacharopoulo F, Damaliakis J, Papanikolaou N. Experimental Determination of the Effect of Detector Size on Profile Measurements in Narrow Photon Beams Med Phys 2007;33:3700 * 70. Mavroidis P, Ferreira BC, Shi C, Link BK, Papanikolaou N. Treatment plan comparison between helical tomotherapy and MLC-based IMRT using radiobiological measures. Physics in Medicine and Biology 2007;52(13):3817-3826. * 71. Mavroidis P, Ferreira C, Papanikolaou N, Svensson, Kappas C, Lind B, Brahme A. Assessing the Difference Between Planned and Delivered Intensity-Modulated Radiotherapy Dose Distributions Based on Radiobiological Measures Clinical Oncology 2006 Sep;18(7):529-538. * 72. Shi C, Papanikolaou N, Yan Y., Weng X., Jiang H.. Analysis of the sources of uncertainty for EDR2 film-based IMRT quality assurance Journal of Applied Clinical Medical Physics 2006 May;7(2):1-8. * 73. Stathakis S, Kappas C, Theodorou K, Papanikolaou N, Rosenwald JC. An inhomogeneity correction algorithm for irregular fields of high-energy photon beams based on Clarkson integration and the 3D beam subtraction method J Appl Clin Med Phys 2006;7(1):1-13. * 74. Shi C, Papanikolaou N, Yan Y, Weng X, Jiang H. Analysis of the sources of uncertainty for EDR2 filmbased IMRT quality assurance J Appl Clin Med Phys 2006;7(2):1-8. * 75. Fuss M, Papanikolaou N, Diaz I, Thomas CE. Tomotherapeutic IMRT for rectal and anal cancer Radiotherapy and Oncology 2006;77(3) * 76. Fuss M, Papanikolaou N. Mega-voltage CT guided Sterotactic Body Radiation Therapy Radiotherapy and Oncology 2006;77(3) * 77. Mavroidis P, Ferreira C, Shi S, Penagaricano J, Lind L, Papanikolaou N. Comparison of Dose Distributions from Tomotherapy and IMRT treatment plans using Biologically Effective Dose Radiotherapy and Oncology 2006;77(3) * 78. Rassiah P, Salter BJ, Fuller D, Blough M, Papanikolaou N, Fuss M. Monte Carlo characterization of Target Doses in Stereotactic Body Radiation Therapy (SBRT) Acta Oncol 2006;45(7):989-994. * 79. Fuss M, Shi C, Papanikolaou N. Tomotherapeutic stereotactic body radiation therapy: techniques and comparison between modalities Acta Oncol 2006;45(7):953-960. * 80. Joyner M, Salter BJ, Papanikolaou N, Fuss M. Stereotactic body radiation therapy for centrally located lung lesions Acta Oncol 2006;45(7):802-807. * 81. Papanikolaou N. Heterogeneity Corrections in the IMRT Era Med Phys 2006;33:2262 * 82. Yan Y, Jiang H, Weng X, Penagaricano J, Moros E, Papanikolaou N, , Novak P, Ratanatharathorn V. A Comprehensive Patient-Specific IMRT Quality Assurance Procedure on Hi-Art Tomotherapy Unit Med Phys 2006;33:2250 * 83. Lin L, Shi C, Salter B, Fuss M, Papanikolaou N. Quantification of Respiration-Induced Dosimetric Impact On Liver for Abdominal Radiotherapy Med Phys 2006;33:2174 * 84. Rassiah P, Fuss M, Papanikolaou N. Dose Mapping for Interrupted Tomotherapy Treatments Med Phys 2006;33:2088 * 85. Huang Y, Blough M, Esquivel C, Papanikolaou N. Dose Differences Due to Air Pockets in Mammosite Treatments for Partial Breast Irradiation Med Phys 2006;33:2088 * 86. Rassiah P, Fuss M, Blough M, Hussey DH, Lancaster J, Papanikolaou N, Salter B. Characterization of Dose in SBRT Lung Via Monte Carlo Med Phys 2006;33:2076 * 87. Shi C, Penagaricano J, Yan Y, Papanikolaou N. Application of the Post-Processing Dose Tool (PPD) to Dosimetrically Compare Gamma Knife and HiArt Tomotherapy Med Phys 2006;33:2072 * 88. Fuss M., Shi C, Papanikolaou N. Tomotherapeutic stereotactic body radiation therapy: Techniques and comparison between modalities Acta Oncologica 2006 Jan;45:953-960. * 89. Penagaricano J, Papanikolaou N, Youssef E, Wu C, Yan Y, Ratanatharathorn. Intensity-modulated radiation therapy (IMRT) enabling technologies J Artk Med Soc 2005 Oct;102(4):117 * 90. Yan Y, Papanikolaou N, Weng X, Penagaricano J, Ratanatharathorn V. Fast radiographic film calibration procedure for helical tomotherapy intensity modulated radiation therapy dose verification Med Phys 2005 Jun;32(6):1566-1570. * 91. Penagaricano J, Papanikolaou N, Wu C, Yan Y. An Assessment of biological-based optimization (BORT) in the IMRT era Medical Dosimetry 2005;30(1):12-19. * 92. Wu C, Cy, Shi, Yang C, Papanikolaou N, Ratanatharathorn V, Purdy JA, Vijaykumar A. A comparison between BAT and Tomotherapy MVCT on inter-fractional prostate localization Medical Physics 2005;32(6) * 93. Shi, CY, Papanikolaou N, Yan Y, Weng Z. An analytic Approach to Film Based Absolute Dosimetry for IMRT Medical Physics 2005;32(6) * 94. Papanikolaou N, Shi CY, Yan Y, Weng X. Patient Quality Assurance Analysis for Tomotherapy Medical Physics 2005;32(6) * 95. Weng X, Yan Y, Ratanatharathorn V, Penagaricano J, Shi C, Berkley L, Youssef E, Papanikolaou N. Initial experience with a dynamic treatment simulation system Medical Physics 2005;32(6) * 96. Yan Y, Weng X, Ratanatharathorn V, Penagaricano J, Shi C, Berkley L, Youssef E, Papanikolaou N. Treatment simulation for 4D image guided radiation therapy Medical Physics 2005;32(6) * 97. Papanikolaou N, Mavroidis P, Kappas C, Shi C, Yan Y, Penagaricano J. Plan evaluation using Biologically Uniform Dose Radiotherapy and Oncology 2005;76(3) * 98. Papanikolaou N, Jiang H, Shi C, Yan Y. The effect of tissue heterogeneity in Tomotherapy planning and delivery Radiotherapy and Oncology 2005;76(3) * 99. Penagaricano J, Papanikolaou N, Yan Y, Youssef E, Ratanatharathorn V. Feasibility of cranio-spinal axis radiation with the Hi-Art tomotherapy system Radiotherapy and Oncology 2005;76(1):72-78. * 100. Papanikolaou N, Penagaricano J, Yan Y, Youssef E, Wu C, Ratanatharathorn V. Hi-Art Tomotherapy vs. MLC based IMRT: plan dosimetry comparison Radiotherapy and Oncology 2004;68 * 101. Penagaricano J, Papanikolaou N, Yan Y, Ratanatharathorn V. Application of Intensity Modulated Radiation Therapy in Pediatric Malignancies Medical dosimetry 2004;29(4):247-253. * 102. Penagaricano J, Ratanatharathorn V, Papanikolaou N, Yan Y. Intensity-Modulated Radiation Therapy reduces the dose to normal tissue in T2N0M0 squamous cell carcinoma of the glottic larynx Medical Dosimetry 2004;29(4):254-257. * 103. Penagaricano J, Papanikolaou N. Intensity Modulated Radiation Therapy for Carcinoma of the Head and Neck Current Oncology Reports 2003 Mar;5(2):131-139. * 104. Elshihabi S, Ratanatharathorn V, Yan Y, Papanikolaou N, Penagaricano J, Linskey M. Current Principles for the Management of Solid Central Nervous Metastases Contemporary Neurosurgery 2003;25(4):1-10. * 105. Reft C, Alecu R, Das IJ, Gerbi BJ, Keall P, Lief E, Mijnheer BJ, Papanikolaou N, Sibata C, Van Dyk J. Dosimetric considerations for patients with hip prostheses undergoing pelvic irradiation Medical Physics 2003;30(6):1162-1182. * 106. Papanikolaou N. Algorithms for treatment planning with Photon Beams Medical Physics 2003;30(6):1411 * 107. Papanikolaou N, Penagaricano J, Yan Y, Ratanatharathorn V. A feasibility study of IMRT for craniospinal Irradiation Radiotherapy and Oncology 2002 Sep;64(Supl):292 * 108. Papanikolaou N, Yan Y, Penagaricano J, Ratanatharathorn V. Application of IMRT for the treatment of medulloblastoma Medical Physics 2002 Jun;29(6)-1215. * 109. Yan Y, Papanikolaou N, Penagaricano J, Ratanatharathorn V. Automated patient positioning verification using orthogonal DRR and portal images Medical Physics 2002 Jun;29(6):1244 * 110. Papanikolaou N, Yan Y, Penagaricano J, Ratanatharathorn V. The Impact of Daily Patient Set-up error and Tissue Inhomogeneities in PTV Coverage and OAR Avoidance Using IMRT Medical Physics 2002 Jun;29(6):1286 * 111. Papanikolaou N. Dose calculation algorithms in the IMRT era Radiotherapy and Oncology 2001 Oct;61(S1):512 * 112. Papanikolaou N, Stathakis S, Tsougos Y, Kappas C. The effect of tissue inhomogeneities in IMRT Med. Phys 2001;28(6):1207 * 113. Papanikolaou N, Strottmann JM, Cassola SL, Mohiuddin M, Regine WF. Multi-modality guided treatment for brain tumors based on image fusion Radiology 2000 Nov;217:158 * 114. Butker E, Ting J, Papanikolaou N, Davis L. A time-motion study of a typical IMRT with inverse planning and delivery Radiology 2000 Nov:202 * 115. Holmes L, Godette K, Papanikolaou N, Iwinski A, Ghavidel S, Ting J. Using IMRT for management of cervix cancer Radiology 2000 Nov:315 * 116. Ting J, Butker E, Papanikolaou N, Iwinski A. Radiation room shielding design with consideration of IMRT Radiology 2000 Nov;217:158 * 117. Papanikolaou N, Klein E. Heterogeneity corrections should be used in treatment planning for lung cancer Med Phys 2000;27(9):1702-1704. * 118. Papanikolaou N, Gehring M. A study of the algorithm dimensionality in the calculation of dose for photon beam Med Phys 1998;25(7) * 119. Erb J, Kalbaugh K, Papanikolaou N, Sowards K, Cassola S, Ibbott G. Commissioning of the Varian enhanced dynamic wedge Med Phys 1998;25(7):A94 * 120. Papanikolaou N, Duce J, Erb J. Investigation of the changes in the output factor of wedged fields Med. Phys. 1997;24(6):966 * 121. Papanikolaou N, Erb J, Heintz J. Commissioning and acceptance testing of a convolution based 3D RTP system Med Phys 1997;24(6):1077 * 122. McNutt T, Mackie TR, Reckwerdt P, Papanikolaou N, Paliwal B. Calculation of portal dose using the convolution/superposition methods Med. Phys 1996;23(4):527-535. * 123. Papanikolaou N, Paliwal B. A study of the effect of cone shielding in intraoperative radiotherapy Med. Phys 1995;22(5):571-575. * 124. Papanikolaou N, Mackie TR, Gehring M, Fairbanks J. Clinical implementation of a convolution based algorithm for 3D treatment planning Int Journ Rad Onc Biol Phys 1995;32:302 * 125. Papanikolaou N, Mackie TR, Wells C, Gehring M, Reckwerdt P. Investigation of the convolution method for polyenergetic spectra Med Phys 1993;20(5):1327-1336. * 126. Meger-Wells CM, Mackie TR, Papanikolaou N, Frye DMD. Dosimetry of Stereotactic Radiosurgery Beams Using a Plastic Scintillation Detector Med Phys 1993;20(3) * 127. Papanikolaou N. Measurements of the electron dose distribution near inhomogeneities using a plastic scintillation detector Int Journ Rad. Onc. Biol. Phys 1993;29(5):1157 Papers Submitted * 1. Liu YX, Su FC, Martin S, Lin L, Shi CY, Papanikolaou N. A phantom-based evaluation of a real-time tracking micro MLC delivery Int. J. Biomedical Engineering and Technology 2008 * 2. Liu YX, Shi CY, Gutierrez A, Stathakis S, Papanikolaou N. Dose undulation index development for evaluating the dosimetric characteristics at the stepped field edge of multileaf collimators Technology in Cancer Research & Treatment 2008 * 3. Liu YX, Shi CY, Lin B, Ha C, Papanikolaou N. Four-Dimensional Tracking Radiotherapy Delivery for Respiratory Lung Tumor based-on Dual-layer Multileaf Collimator TrackBeam Medical Physics 2008 * 4. Liu YX, Shi CY, Papanikolaou N. Development of a toolkit for dose verification and comparison between treatment planning systems and Monte Carlo simulation Technology in Cancer Research & Treatment 2008 * 5. Lin L, Shi C, Fuss M, Eng T, Swanson G, Papanikolaou N. Evaluation of inter-fractional patient setup shifts for helical tomotherapy treatment Journal of Applied Clinic Medical Physics 2008 * 6. Mesa F, Papanikolaou N, Esquivel C, Eng TY. Lateral Total Body Irradiation, The CTRC experience Review Article 1. Papanikolaou N. NCS Report 12: Determination and use of Scatter Correction Factors for Megavoltage Photon Beams Health Physics 1999;77(2):215 2. Papanikolaou N. Biophysical aspects of Auger Processes Med Phys 1994;21(2) PRESENTATIONS: 09/2009 Radiobiological analysis of planned and delivered IMRT dose distributions, World Congress in Medical Physics, Radiobiological Optimization, Munich, GM (Co-Author) 09/2009 Evaluation on Lung Cancer Patients' 4D Treatment Plans Utilizing Biologically Effective Uniform Dose, World Congress in Medical Physics, Radiobiology, Munich, GM (Co-Author) 05/2009 Radiation therapy target tracking with 4D IMRT, ISRACAS conference, ISRACAS, Tel Aviv, IS (Sole Presenter) 12/2008 Incorporating System Latency Effects Associated with Dynamic Radiotherapy Delivery in the Dose Prediction Step: Preliminary Results Based on Phantom Measurements, RSNA Annual Conference, RSNA, Chicago, IL (Co-Presenter) 12/2008 Monte Carlo Dose Calculations for Brachytherapy Sources Based on a Human Anatomy Model, RSNA Annual Conference, RSNA, Chicago, IL (Co-Presenter) 12/2008 Transition to Heterogeneity Dose Calculations, RSNA Annual Conference, RSNA, Chicago, IL (Invited Speaker) 11/2008 Target Volume Analysis Using Ultrasound and Computed Tomography in Pre- and Post-implant Prostate Brachytherapy Planning, RSNA Annual Conference, RSNA, Chicago, IL (CoPresenter) 07/2008 Quality Assurance for Advanced RT Technologies-The Challenge for TR Clinical Trials, American Association of Physicists in Medicine Annual Meeting, American Association of Physicists in Medicine, Houston, TX (Invited Speaker) 07/2008 Imaging for Planning Verification: In Room Imaging: Pre-Treatment Verification, American Association of Physicists in Medicine Annual Meeting, American Association of Physicists in Medicine, Houston, TX (Invited Speaker) 07/2008 Heterogeneity Corrections in Clinical Trials, American Assocation of Physicists in Medicine Annual Meeting, American Assocation of Physicists in Medicine, San Antonio, TX (Invited Speaker) 05/2008 Helical Tomothearpy Quality Assurance, Where we are and where we go?, Asian Association of Radiation Oncology, AARO, Beijing, CH (Co-Presenter) 04/2008 Utilization of Data Envelopment Analysis (DEA) to Compare Prostate Treatment, Southwest Chapter of the AAPM Young Investigators Symposium, Southwest Chapter of the AAPM, Austin, TX (Co-Presenter) 04/2008 Clinical Application of the DMLC Algorithm on a Moving Target, Southwest Chapter of the AAPM Young Investigators Symposium, Southwest Chapter of the AAPM, Austin, TX (CoPresenter) 04/2008 Use of BEAMnrc and DOSXYZ to Model Electron Fields Shaped with a Photon Multileaf Collimator for Modulated Electron Radiotherapy, Southwest Chapter of the AAPM Young Investigators Symposium, Southwest Chapter of the AAPM, Austin, TX (Co-Presenter) 04/2008 The Range-Energy and Range-Density Relationship for Therapeutic Proton Beams, Southwest Chapter of the AAPM Young Investigators Symposium, Southwest Chapter of the AAPM, Austin, TX (Co-Presenter) 04/2008 Dosimetric Comparison of Prostate Treatment Modalities, Southwest Chapter of the AAPM Young Investigators Symposium, Southwest Chapter of the AAPM, Austin, TX (Co-Presenter) 04/2008 Biologically Effective Uniform Dose Calculation on 4D Radiation Therapy Plans for Lung Cancer Treatments, Southwest Chapter of the AAPM Young Investigators Symposium, Southwest Chapter of the AAPM, Austin, TX (Co-Presenter) 04/2008 Measurement and Derivation of Geometric Error Distribution for a Real Time 4D Tracking Radiotherapy System, Southwest Chapter of the AAPM Young Investigators Symposium, Southwest Chapter of the AAPM, Austin, TX (Co-Presenter) 04/2008 Validation of Collapse Cone Convolution Superposition Algorithm for Narrow Field Used in Stereotactic Radiotherapy, Southwest Chapter of the AAPM Young Investigators Symposium, Southwest Chapter of the AAPM Young Investigators Symposium, Austin, TX (Co-Presenter) 04/2008 Dosimetric Analysis of Real-Time and Post-Implantation Dosimetry for Prostate, Southwest Chapter of the AAPM Young Investigators Symposium, Southwest Chapter of the AAPM, Austin, TX (Co-Presenter) 04/2008 Influence of Pitch and Jaw Width on Helical Tomotherapy Head & Neck Treatment Planning, Southwest Chapter of the AAPM Young Investigators Symposium, Southwest Chapter of the AAPM, Austin, TX (Co-Presenter) 04/2008 Dosimetric Considerations of Cf-252 Brachytherapy Source, Southwest Chapter of the AAPM Young Investigators Symposium, Southwest Chapter of the AAPM, Austin, TX (Co-Presenter) 04/2008 The Effect of the Number of Projections used on the Accuracy of Volumetric Data Reconstructed Using Digital Tomosynthesis with the Shift and Add Algorithm, Southwest Chapter of the AAPM Young Investigators Symposium, Southwest Chapter of the AAPM, Austin, TX (Co-Presenter) 07/2007 Heterogeneity Corrections in the IMRT Era, American Association of Physicists in Medicine Annual Meeting, American Association of Physicists in Medicine, Minneapolis, MN (Invited Speaker) 07/2007 Imaging for Planning /Verification: In-Room Imaging, American Association of Physicists in Medicine Annual Meeting, American Association of Physicists in Medicine, Minneapolis, MN (Invited Speaker) 05/2007 Image Guidance with Tomotherapy, Joint Meeting of the SW-AAPM and FMOFM, American Association of Physicists in Medicine - Southwest Chapter, Federacion Mexicana de Organizaciones de Fisica Medica, Queretaro, MX (Invited Speaker) 05/2007 Tomotherapy Quality Assurance, American College of Medical Physics Annual Meeting, American College of Medical Physics, Baltimore, MD (Invited Speaker) 01/2007 Mechanical and Dosimetric Quality Assurance for Helical Tomotherapy, American Society for Therapeutic and Radiation Oncology (Sole Presenter) 12/2006 Quality Assurance with Helical Tomotherapy, Tomotherapy QA Advisory Board Meeting, Tomotherapy, Inc., Orlando, FL (Invited Speaker) 01/2006 Characterization of Lung Lesion Doses in Stereotactic Body Radiation Therapy (SBRT) via Monte Carlo, International Conference in Stereotactic Body Radiation Therapy, NL (Sole Presenter) 01/2006 Tomotherapeutic Stereotactic Body Radiation Therapy: Techniques and Comparison between modalities, International conference in Stereotactic Body Radiation Therapy, NL (Sole Presenter) 01/2006 The Use of Biologically Effective Uniform Dose in Comparing Dose Distributions from Tomotherapy and IMRT Treatment Plans, World Congress in Medical Physics and Biomedical Engineering, Seoul, KS (Invited Speaker) 12/2005 Image Guidance Radiotherapy with TomoTherapy, Socieda de Fisica Medica Annual Meeting, Socieda de Fisica Medica, Monterey, MX (Invited Speaker) 12/2005 Respiratory Gated Radiotherapy, Socieda de Fisica Medica Annual Meeting, Socieda de Fisica Medica, Monterey, MX (Invited Speaker) 05/2005 Patient QA for Helical TomoTherapy, American College of Medical Physics Annual Meeting, American College of Medical Physics, Orlando, FL (Invited Speaker) 05/2005 IMRT Quality Assurance on Varian Equipment, American College of Medical Physics Annual Meeting, American College of Medical Physics, Orlando, FL (Invited Speaker) 04/2005 Integral Dose in TomoTherapy, First TomoTherapy Image Guided IMRT Conference, Shreveport, LA (Invited Speaker) 08/2004 Biologically-Based Intensity Modulated Radiation Therapy for Head and Neck Cancer, The 6th International Conference on Head and Neck Cancer, Washington, DC (Sole Presenter) 07/2004 Transitions to Heterogeneity Corrections, American Association of Physicists in Medicine Annual Meeting, American Association of Physicists in Medicine, Pittsburgh, PA (Invited Speaker) 06/2004 Biologically-based IMRT for Unresectable Pancreatic and Hepatocellular Carcinomas, World Congress on Gastrointestinal Cancer Conference, Barcelona, SP (Sole Presenter) 06/2004 IMRT Patient Quality Assurance, American College of Medical Physics Annual Meeting, American College of Medical Physics, Scottsdale, AZ (Invited Speaker) 06/2004 Developing a Pro-Forma for IMRT Billing, American College of Medical Physics Annual Meeting, American College of Medical Physics, Scottsdale, AZ (Invited Speaker) 05/2004 Tissue Inhomogeneity Corrections for Megavoltage Photon Beams, Missouri River Valley Chapter AAPM Spring Meeting, American Association of Physicists in Medicine - Missouri River Valley Chapter, Lake of the Ozarks, MO (Invited Speaker) 04/2004 Real-time Brachytherapy, Prostate Cancer Forum of the Prostate Cancer Foundation, Prostate Cancer Foundation, Little Rock, AR (Invited Speaker) 04/2004 Prostate Brachytherapy Techniques, Grand Rounds, Department of Urology, University of Arkansas for Medical Sciences, Little Rock, AR (Invited Speaker) 03/2003 IMRT in Clinical Practice, IASO Symposium on New Technologies in Radiation Therapy, GR (Invited Speaker) 01/2003 Physical Considerations of Intensity Modulated Radiation Therapy, Symposium on IMRT, Paris, FR (Invited Speaker) 01/2003 Respiratory Gated Radiation Therapy, The 4th Annual Symposium on the Management of Lung Cancer, University of Arkansas for Medical Sciences, Little Rock, AR (Invited Speaker) 11/2002 What a Radiation Oncologist needs to know about IMRT, Japanese Association for Therapeutic Radiation and Oncology Annual Meeting, Japanese Association for Therapeutic Radiation and Oncology, Tokyo, JA (Invited Speaker) 11/2002 Clinical Implementation of IMRT, Department of Radiation Oncology, Shimabara Hospital, Nagasaki, JA (Invited Speaker) 10/2002 Plan Development in IMRT, American Society for Therapeutic Radiation and Oncology Annual Meeting, Philips Medical Systems Users' Group, New Orleans, LA (Invited Speaker) 04/2002 Implementation of IMRT, First International Conference on IMRT, Seoul, KS (Invited Speaker) 09/2001 Dose Calculation Algorithms in the IMRT era, Intensity Modulated Radiation Therapy Symposium - ESTRO Annual Meeting, European Society of Therapeutic Radiation and Oncology (Sole Presenter) 03/2001 Dose Algorithms in the IMRT Era, Southeast Chapter AAPM Annual Meeting, American Association of Physicists in Medicine - Southeast Chapter (Invited Speaker) 03/2001 Review of Heterogeneity Algorithms, Florida Chapter AAPM Annual Meeting, American Association of Physicists in Medicine - Florida Chapter, Orlando, FL (Invited Speaker) 10/2000 Monitor Unit Calculations, 3-D Radiation Treatment Planning Symposium, Annual ESTRO meeting, European Society of Therapeutic Radiation and Oncology, Istanbul, TU (Invited Speaker) 10/2000 Clinical Implementation of 3D RTP, New Jersey Chapter AAPM Annual Meeting, American Association of Physicists in Medicine - New Jersey chapter, NJ (Invited Speaker) 10/2000 IMRT Algorithms for Dose Calculation, American Society of Therapeutic Radiation and Oncology Annual Meeting, Varian Users‘ Meeting, Boston, MA (Invited Speaker) 07/2000 Absolute and Relative Dose Distribution Comparisons for Convolution/Superposition and Monte Carlo based Treatment Planning, World Congress in Medical Physics, Chicago, IL (Sole Presenter) 07/2000 Dose Calculations with the BEAM Monte Carlo Code at Extended SSD‘s, World Congress in Medical Physics, Chicago, IL (Sole Presenter) 07/2000 A volumetric and dosimetric study of LDR brachytherapy prostate implants based on image fusion of ultrasound and computed tomography, World Congress in Medical Physics, Chicago, IL (Sole Presenter) 07/2000 Implementation of an Inverse Treatment Planning System for Conventional non-IMRT Treatments, World Congress in Medical Physics, Chicago, IL (Sole Presenter) 06/2000 The Convolution Algorithm, American Association of Medical Dosimetrists Annual Meeting, American Association of Medical Dosimetrists, Portland, OR (Invited Speaker) 05/2000 An Optimized Convolution/Superposition based Algorithm for Dose Calculation with Photon Beams, International Conference of Computers in Radiotherapy, Heidelberg, GM (Sole Presenter) 04/2000 A volumetric and dosimetric study of LDR brachytherapy prostate implants based on image fusion of ultrasound and computed tomography, American Radium Society Annual meeting, London, UK (Sole Presenter) 09/1999 Monte Carlo Algorithms in Radiotherapy, VI International Conference on Medical Physics, University of Patras, Patras, GR (Invited Speaker) 09/1999 Clinical Implications of Inhomogeneity Corrections for Photon Beams, 3D RTP Symposium, VI International Conference on Medical Physics, University of Patras, Patras, GR (Invited Speaker) 04/1999 Monitor Unit Calculations for Photon Inhomogeneities, Southeast Chapter AAPM Annual Meeting, American Association of Physicists in Medicine - Southeast Chapter, Atlanta, GA (Invited Speaker) 04/1999 Clinical Implementation of 3-D RTP, American Association of Physicist in Medicine Annual Meeting, American Association of Physicists in Medicine, Tampa, FL (Invited Speaker) 03/1999 Review of dose calculation algorithms, Tokyo, JA (Invited Speaker) 06/1997 Monitor Unit Calculations for Model-based Algorithms, American Association of Physicists in Medicine Annual Meeting, ADAC Users' Group, Milwaukee, WI (Invited Speaker) 03/1997 Review of Inhomogeneity Correction Algorithms, Techniques and Technology Annual meeting, Charleston, SC (Invited Speaker) 02/1997 Advances in Radiation Therapy Treatment Planning, Australian Institute of Radiography National Meeting, Australian Institute of Radiography, Tasmania, AS (Keynote Speaker) 02/1997 Algorithms in 3-D Treatment Planning, Australian Institute of Radiography National Meeting, Australian Institute of Radiography, Tasmania, AS (Invited Speaker) 01/1997 Commissioning and Acceptance Testing of a Convolution based 3D RTP System, World Congress in Medical Physics, Nice, FR (Sole Presenter) 01/1997 A Convolution/Superposition Algorithm for Photon Beam Dose Computation, World Congress on Medical Physics, Nice, FR (Sole Presenter) 09/1996 Dosimetric Characteristics and Modeling of Static and Dynamically Wedged Fields, DGMP/OGMP/SGSMP meeting, Graz, AU (Sole Presenter) 01/1996 The Role of Diagnostic Imaging in 3-D Treatment Planning, Radiology Technologists Meeting, Lexington, KY (Invited Speaker) 01/1996 Inhomogeneity Algorithms for Photon Beams, RAMS meeting, New York, NY (Invited Speaker) 01/1996 The Role of Inhomogeneity Algorithms in 3-D Treatment Planning, Computerized Medical Systems Users meeting, Computerized Medical Systems, St. Louis, MO (Invited Speaker) 09/1995 A Convolution Based Algorithm for Dose Computation in Radiation Therapy, Roentgen Centennial International Congress, Wurzburg, GM (Invited Speaker) 01/1995 3D Photon Beam Dose Algorithms, 3D Conformal Therapy meeting, St. Louis, MO (Invited Speaker) RESEARCH GRANTS: Project #: Funding Agency: San Antonio Area Foundation Title: Adaptation of breast radiotherapy in prone position for large breasted patients Status: Active Period: 06/2008 - 05/2009 Role: Principal Investigator % Effort: 10 Total Costs: $35,000.00 Federal Project #: Funding Agency: Veterans Administration Title: Microscopic computer-aided 3D reconstruction of prostate cancer Status: Complete Period: 01/1998 - 12/1999 Role: Co-Investigator % Effort: 10 Total Costs: $24,000.00 Private Project #: Funding Agency: Varian Title: Varian Eclipse Proton TPS Status: Pending Period: 01/2009 - 01/2011 Role: Co-Investigator % Effort: Total Costs: $300,000.00 Project #: 128047 Funding Agency: Oncology Data Systems, Inc. Title: Implementation of an Image Guided Radiotherapy program for Adaptive Radiotherapy(128047) Status: Active Period: 10/2008 - 09/2011 Role: Principal Investigator % Effort: 10 Total Costs: $315,555.00 Project #: 128031 Funding Agency: Oncology Data Systems, Inc. Title: Implementation and validation of a commercially available package for independent dose calculation in radiation therapy(128031) Status: Active Period: 10/2008 - 09/2010 Role: Principal Investigator % Effort: 10 Total Costs: $210,370.00 Project #: Funding Agency: Initia Corporation Title: Development of a Novel Treatment Unit for Adaptive Radiotherapy in the Upright Position Status: Active Period: 02/2008 - 02/2009 Role: Principal Investigator % Effort: 5 Total Costs: $125,000.00 Project #: Funding Agency: Direx Corporation Title: Target tracking delivery using a dual bank micro Multileaf Collimator Status: Complete Period: 10/2006 - 10/2007 Role: Principal Investigator % Effort: 10 Total Costs: $55,000.00 Project #: Funding Agency: Philips Medical Systems Title: Development of Educational and Training Program in Intensity Modulated Radiation Therapy and Image-Guided Radiation Therapy Status: Active Period: 02/2006 - 02/2009 Role: Principal Investigator % Effort: 10 Total Costs: $600,000.00 Project #: Funding Agency: NOMOS Corporation Title: IGRT implementation using the Peacock delivery system Status: Active Period: 01/2006 - 12/2008 Role: Principal Investigator Total Costs: $115,000.00 % Effort: 5 Project #: Funding Agency: Cancer Care Council of San Antonio Title: Development of a Monte Carlo based 4D Simulation Toolkit Status: Complete Period: 01/2006 - 12/2007 Role: Co-Investigator % Effort: 2 Total Costs: $15,000.00 Project #: Funding Agency: Tomotherapy Inc Title: Monte Carlo Algorithms and QA tools for Tomotherapy Status: Complete Period: 01/2004 - 12/2005 Role: Principal Investigator % Effort: 10 Total Costs: $120,000.00 Project #: Funding Agency: Central Arkansas Radiation Therapy Institute Title: PortSIM A software platform for MLC field outline verification Status: Complete Period: 01/2003 - 12/2005 Role: Co-Investigator % Effort: 5 Total Costs: $30,000.00 Project #: Funding Agency: ADAC / Philips Medical Systems Title: IMRT teaching grant Status: Complete Period: 01/2002 - 01/2006 Role: Principal Investigator % Effort: 15 Total Costs: $500,000.00 Project #: Funding Agency: ADAC Laboratories Title: Clinical evaluation of a convolution based algorithm for 3-D Radiation Treatment Planning. Status: Complete Period: 01/1999 - 01/2000 Role: Principal Investigator % Effort: 10 Total Costs: $11,000.00 . Project #: Funding Agency: Dr. Mildred Scheel Stiftung fur Krebsforschung Title: Commissioning of a Convolution/Superposition Algorithm Status: Complete Period: 01/1996 - 12/1998 Role: Principal Investigator % Effort: 5 Total Costs: $48,000.00 State Project #: Funding Agency: South Texas Technology Management Title: STTM - Monte Carlo Dose Algothim based-on human anatomically detailed model Status: Pending Period: 01/2008 - 01/2010 Role: Co-Investigator % Effort: Total Costs: $50,000.00 SERVICE SERVICE TO THE PROFESSION: Dates Type Description Role 01/2008-01/2010 National American College of Medical Physics Treasurer 01/2008-01/2010 National American College of Medical Physics Executive Board Member 11/2007-Present National Medical Physics Research Inc. Advisory Board Member 11/2007-Present National American Association of Physicists in Medicine Annual Meeting Reviewer 10/2007-Present National Orbital Therapies Advisory Board Member 08/2007-12/2009 National Work Group on Treatment Planning Member 06/2007-06/2007 National American Board of Radiology Examiner 01/2007-12/2010 National Work Group on Molecular Imaging in Radiation Oncology Member 01/2007-12/2009 National Work Group in Imaging for Treatment Verification American Association of Physicists in Medicine Member 01/2007-12/2009 International European Affairs Committee Member 01/2007-05/2008 National Planning Committee for 2008 National Meeting American College of Medical Physics Committee Member 01/2007-Present National Strategic Planning Committee - American College of Medical Physics Committee Member 01/2007-Present National Committee on National Meeting Program PlanningAmerican College of Medical Physics Committee Member 01/2007-Present National Committee on Finance - American College of Medical Physics Committee Member 12/2006-12/2009 National Task Group 148 - Clinical Implementation of Tomotherapy Chair 12/2006-12/2009 National Working Group on Recommendations for Radiotherapy External Beam Quality Assurance Member 09/2006-12/2008 National Working Group on Coordination of Medical Physics Residency Programs Member 01/2006-Present National Committee on Communications - American College of Medical Physics Committee Member 01/2005-Present International Tomotherapy Incorporated Advisory Board Member 01/2005-Present International Scanditronix - Wellhofer Advisory Board Member 01/2005-Present National Member Work Group on Radiation Dosimetry - American Association of Physicists in Medicine 01/2004-Present National National Cancer Institute Member of Grant Review Board 07/2003-Present National American Association of Physicists in Medicine Annual Meeting Moderator 01/2003-Present International Journal of Applied Clinical Medical Physics Associate Editor 01/2003-Present National Invited Participant American Board of Radiology 01/2003-Present International Journal of Applied Clinical Medical Physics Editorial Board Member 05/2002-Present National American College of Radiation Oncology External Reviewer 05/2002-Present National Medical Physics Commission Board - American College of Radiation Oncology Commission Member 01/2002-Present International Journal of Applied Clinical Medical Physics Journal Reviewer 01/2001-12/2004 National Task Group 63 - "High Atomic Number Implanted Patients" Member 01/2001-12/2004 National Committee on European Affairs - American Association of Physicists in Medicine Committee Member 01/2001-Present National Medical Physics Journal Associate Editor 09/1999-09/1999 International VI International Conference on Medical Physics Organizing Committee Member 01/1999-12/2001 National Sub-committee on Computers in Radiation Therapy - American Association of Physicists in Medicine Committee Member 01/1999-12/2001 National Committee on Professional Information and Clinical Relations - American Association of Physicists in Medicine Committee Member 01/1999-Present National Committee on Radiation Therapy Standards - Committee 01/1998-12/2003 National American College of Medical Physics Member Task Group 65 - "Inhomogeneities for Photon Beams" Chair 01/1998-Present International Journal of Nuclear Medicine Journal Reviewer 01/1997-12/2000 National Experts‘ Committee on Radiation Therapy Treatment Planning - Food and Drug Agency (FDA) - American Association of Physicists in Medicine Committee Member 01/1995-01/1997 National Science Council for National Meetings - American Society of Therapeutic Radiation and Oncology Council Member 01/1992-Present National Medical Physics Journal Journal Reviewer Description Role 08/2003-Present Community Boy Scouts of America Group Leader 10/2001-Present Community Greek Orthodox Church in America Member SERVICE TO THE PUBLIC: Dates Type GRANT REVIEWS: Dates Granting Agency 04/2004-Present NCI Panel Name Small Business Innovation Research (SBIR) Program Role Member PROFESSIONAL AFFILIATIONS: Dates Organization 10/2008-12/2008 American College of Radiology 05/2001-10/2005 Arkansas Cancer Research Center 01/1999-Present American College of Medical Physics 01/1997-Present American College of Radiation Oncology 01/1995-Present American Society of Therapeutic Radiation and Oncology 01/1995-Present European Society of Therapeutic Radiation and Oncology 01/1989-Present American Association of Physicists in Medicine 01/1984-01/1989 American Association of Physics Teachers COMMITTEES (UTHSCSA Standing Committees): DEPARTMENT Dates Committee Role 01/2006-Present Radiation Oncology Residency Steering Member Dates Committee Role 01/2008-Present Radiation Safety Committee Member UNIVERSITY COMMITTEES (OTHER): DEPARTMENT Dates Committee Role 11/2007-Present Residency and Training requirements for Medical Physicists, UTHSCSA, Graduate School of Biomedical Sciences, Department of Radiology-Radiological Sciences Chair 01/2006-Present Radiation Therapy Curriculum Committee, University of Texas Health Science Center at San Antonio, Graduate School of Biomedical Sciences, Department of Radiology-Radiological Sciences Chair 01/2006-Present Radiological Sciences Committee for Qualifying Examination, University of Texas Health Science Center at San Antonio, Graduate School of Biomedical Sciences, Department of Radiology-Radiological Sciences Member 01/2006-Present Radiological Sciences Committee for Student Recruitment, University of Texas Health Science Center at San Antonio, Graduate School of Biomedical Sciences, Department of Radiology-Radiological Sciences Member 01/2006-Present Billing Compliance Committee, University of Texas Health Science Center at San Antonio, School of Medicine, Department of Radiation Oncology Member 01/2006-Present Clinical Operations Committee, University of Texas Health Science Center at San Antonio, School of Medicine, Department of Radiation Oncology Member 01/2006-Present Electronic Medical Records Task Group, University of Texas Health Science Center at San Antonio, School of Medicine, Department of Radiation Oncology Member 01/2006-Present Quality Assurance Task Group, University of Texas Health Member Science Center at San Antonio, School of Medicine, Department of Radiation Oncology 01/2006-Present Total Quality Management Committee, University of Health Science Center at San Antonio, School of Medicine, Department of Radiation Oncology Member 01/2005-Present , Scanditronix - Wellhofer Scientific Advisory Board 07/2003-10/2005 Medical Dosimetry Baccalaureate Program Advisory Board, University of Arkansas for Medical Sciences, Allied Heallth Professions, Department of Radiological Sciences Chair 12/2001-10/2005 Medical Physics Residency Steering Committee, University of Arkansas for Medical Sciences, School of Medicine, Department of Radiation Oncology Chair 05/2001-10/2005 Clinical Operations Committee, University of Arkansas for Medical Sciences, School of Medicine, Department of Radiation Oncology Member 05/2001-10/2005 Continuous Medical Education Review Courses in Radiation Oncology, University of Arkansas for Medical Sciences, School of Medicine, Department of Radiation Oncology Chair 05/2001-10/2005 Quality Assurance in Radiation Oncology, University of Arkansas for Medical Sciences, Department of Radiation Oncology Member 05/2001-10/2005 Total Quality Management Committee for Gamma Knife RadioSurgery, University of Arkansas for Medical Sciences, School of Medicine, Department of Neurosurgery Chair 05/2001-10/2005 Quality Assurance Committee in Gamma Knife Radio-Surgery, University of Arkansas for Medical Sciences, School of Medicine, Department of Neurosurgery Member Dates Committee Role 01/2006-12/2007 Radiation Safety Committee, Cancer Therapy and Research Center Chair 01/2006-12/2007 Facilities Planning Committee, Cancer Therapy and Research Center Member 01/2006-12/2007 Cancer Center Clinical Operations Committee, Cancer Therapy and Research Center Member 01/2006-12/2007 Strategic Planning Committee, Cancer Therapy and Research Center Member 01/2005-Present Tomotherapy, Inc. Scientific Advisory Board 05/2001-10/2005 Scientific Committee, Central Arkansas Radiation Therapy Institute Member OTHER 05/2001-10/2005 Advisory Committee to Central Arkansas Radiation Therapy Institute Board of Directors, Central Arkansas Radiation Therapy Institute Member Dates Committee Role 05/2001-10/2005 Radiation Safety Committee, University of Arkansas for Medical Sciences, School of Medicine Member 05/2001-10/2005 Medical Student Applicant Review Committee, University of Arkansas for Medical Sciences, School of Medicine Member UNIVERSITY