12 Physics and Clinical Aspects of Brachytherapy
... The J-rays from radium and its decay products range in energy from 0.05 to 2.4 MeV, with an average energy of about 0.8 MeV. The active 226Ra sources consist of a radium salt (sulfate) mixed with filler (usually barium sulfate), which is encapsulated in platinum cylinders to form radium tubes or need ...
... The J-rays from radium and its decay products range in energy from 0.05 to 2.4 MeV, with an average energy of about 0.8 MeV. The active 226Ra sources consist of a radium salt (sulfate) mixed with filler (usually barium sulfate), which is encapsulated in platinum cylinders to form radium tubes or need ...
Growth and gas exchange in field-grown and greenhouse
... chlorophyll, chlorophyll a and chlorophyll b were determined after extraction as described by Inskeep and Bloom (1985). The second sample was placed in a 20-ml test tube for determination of methanol-extractable UV-absorbing compounds. Samples were dried at 95 °C for at least 24 h, then ground in a ...
... chlorophyll, chlorophyll a and chlorophyll b were determined after extraction as described by Inskeep and Bloom (1985). The second sample was placed in a 20-ml test tube for determination of methanol-extractable UV-absorbing compounds. Samples were dried at 95 °C for at least 24 h, then ground in a ...
chapter 7. clinical treatment planning in external photon
... External photon beam radiotherapy is usually carried out with more than one radiation beam in order to achieve a uniform dose distribution inside the target volume and as low as possible a dose in healthy tissues surrounding the target. The ICRU report 50 recommends a target dose uniformity within + ...
... External photon beam radiotherapy is usually carried out with more than one radiation beam in order to achieve a uniform dose distribution inside the target volume and as low as possible a dose in healthy tissues surrounding the target. The ICRU report 50 recommends a target dose uniformity within + ...
CURRICULUMVITAE E. ISHMAEL PARSAI, Ph.D., FACRO, FAAPM
... Since January of 2006, I have participated in numerous professional activities as an Expert Medical Physicist (EMP) performing various requested tasks. Those include but not limited to litigation cases, error assessment on ongoing litigations and recommendations for action, machine evaluation to ver ...
... Since January of 2006, I have participated in numerous professional activities as an Expert Medical Physicist (EMP) performing various requested tasks. Those include but not limited to litigation cases, error assessment on ongoing litigations and recommendations for action, machine evaluation to ver ...
An Introduction to Fluoroscopy Safety
... Skin injuries from fluoroscopic radiation range in severity from transient erythema to tissue necrosis. Transient erythema is very common following prolonged interventional procedures. Necrosis requiring debridement and skin graft occurs perhaps tens of times per year in the U.S., but an exact stati ...
... Skin injuries from fluoroscopic radiation range in severity from transient erythema to tissue necrosis. Transient erythema is very common following prolonged interventional procedures. Necrosis requiring debridement and skin graft occurs perhaps tens of times per year in the U.S., but an exact stati ...
Chapter 15 SPECIAL PROCEDURES AND TECHNIQUES IN
... A miniature linac mounted on a robotic arm not only offers a real potential for frameless radiosurgery and actual image guided dose delivery, with obvious benefits to the patient and staff, but also enables the use of stereotactic treatment techniques on organs other than the brain. In comparison wi ...
... A miniature linac mounted on a robotic arm not only offers a real potential for frameless radiosurgery and actual image guided dose delivery, with obvious benefits to the patient and staff, but also enables the use of stereotactic treatment techniques on organs other than the brain. In comparison wi ...
Electronic portal imaging devices: a review and
... x-ray radiation has benefited from a variety of significant technical advances. These advances include: the development of relatively compact, gantry-mounted linear accelerators capable of isocentric delivery of high-dose x-rays; the adoption of novel three-dimensional imaging modalities (CT, MRI, P ...
... x-ray radiation has benefited from a variety of significant technical advances. These advances include: the development of relatively compact, gantry-mounted linear accelerators capable of isocentric delivery of high-dose x-rays; the adoption of novel three-dimensional imaging modalities (CT, MRI, P ...
Radiation Therapy Professional Curriculum
... the mission, goals and needs of each radiation therapy program. Faculty are encouraged to expand and broaden these fundamental objectives as they incorporate them into their curricula. Specific instructional methods were intentionally omitted to allow for programmatic prerogative as well as creativi ...
... the mission, goals and needs of each radiation therapy program. Faculty are encouraged to expand and broaden these fundamental objectives as they incorporate them into their curricula. Specific instructional methods were intentionally omitted to allow for programmatic prerogative as well as creativi ...
Guideline for Radiation Safety in Interventional Cardiology - J
... Some types of radiation injuries have no clinical symptoms, and are hence undetectable without appropriate examination. Biologic effects resulting from radiation exposure are classified into stochastic effects and deterministic effects based on the difference between the dose-response relationships. ...
... Some types of radiation injuries have no clinical symptoms, and are hence undetectable without appropriate examination. Biologic effects resulting from radiation exposure are classified into stochastic effects and deterministic effects based on the difference between the dose-response relationships. ...
Quality assurance for computed-tomography simulators and the
... Figure 1 shows the place of CT-simulation in the treatment planning process. CT-simulation includes the CTscanner and components of treatment planning system and provides input for dose calculation. Therefore, the subject matter addressed in this document overlaps with the AAPM Diagnostic X-Ray Imag ...
... Figure 1 shows the place of CT-simulation in the treatment planning process. CT-simulation includes the CTscanner and components of treatment planning system and provides input for dose calculation. Therefore, the subject matter addressed in this document overlaps with the AAPM Diagnostic X-Ray Imag ...
Policy Statement on Thyroid Shielding During Diagnostic Medical
... processes, is among the most susceptible sites to radiation-induced carcinogenesis. Risks of radiation exposure are thus of special concern to the American Thyroid Association (ATA). The risk of thyroid cancer arising from radiation exposure is strongly dependent on age at exposure. This risk is gre ...
... processes, is among the most susceptible sites to radiation-induced carcinogenesis. Risks of radiation exposure are thus of special concern to the American Thyroid Association (ATA). The risk of thyroid cancer arising from radiation exposure is strongly dependent on age at exposure. This risk is gre ...
Academic Program Recommendations for Graduate Degrees in Medical Physics Physicists Committee
... Since the first publication of this report in 1993, education in the field of Medical Physics has experienced considerable growth and change. However, much remains the same. The original document was written to provide guidance to medical physics training programs as to the minimal curriculum suitab ...
... Since the first publication of this report in 1993, education in the field of Medical Physics has experienced considerable growth and change. However, much remains the same. The original document was written to provide guidance to medical physics training programs as to the minimal curriculum suitab ...
AAPM Report 197 - Louisiana State University
... Since the first publication of this report in 1993, education in the field of Medical Physics has experienced considerable growth and change. However, much remains the same. The original document was written to provide guidance to medical physics training programs as to the minimal curriculum suitab ...
... Since the first publication of this report in 1993, education in the field of Medical Physics has experienced considerable growth and change. However, much remains the same. The original document was written to provide guidance to medical physics training programs as to the minimal curriculum suitab ...
ACADEMIC PROGRAM RECOMMENDATIONS FOR GRADUATE DEGREES IN MEDICAL PHYSICS AAPM REPORT NO. 79
... Physics has experienced considerable growth and change. However, much remains the same. The original document was written to provide guidance to medical physics training programs as to the minimal curriculum suitable for a Master of Science degree in medical physics. That document was organized arou ...
... Physics has experienced considerable growth and change. However, much remains the same. The original document was written to provide guidance to medical physics training programs as to the minimal curriculum suitable for a Master of Science degree in medical physics. That document was organized arou ...
Academic Program Recommendations For Graduate Degrees
... Physics has experienced considerable growth and change. However, much remains the same. The original document was written to provide guidance to medical physics training programs as to the minimal curriculum suitable for a Master of Science degree in medical physics. That document was organized arou ...
... Physics has experienced considerable growth and change. However, much remains the same. The original document was written to provide guidance to medical physics training programs as to the minimal curriculum suitable for a Master of Science degree in medical physics. That document was organized arou ...
Development of a Whole Body Atlas for Radiation Sharif Qatarneh
... cure while minimizing adverse reactions in healthy tissues. A crucial step in the treatment process is to determine the location and extent of the primary tumor and its loco regional lymphatic spread in relation to adjacent radiosensitive anatomical structures and organs at risk. These volumes must ...
... cure while minimizing adverse reactions in healthy tissues. A crucial step in the treatment process is to determine the location and extent of the primary tumor and its loco regional lymphatic spread in relation to adjacent radiosensitive anatomical structures and organs at risk. These volumes must ...
x-ray safety manual - Winnipeg Regional Health Authority
... radiation exposures to ensure that all exposures are justified; that any necessary exposures are kept as low as is reasonably achievable (ALARA); that the doses received do not exceed certain specified limits; and that allowance is made for future developments. The technologies of x-ray imaging have ...
... radiation exposures to ensure that all exposures are justified; that any necessary exposures are kept as low as is reasonably achievable (ALARA); that the doses received do not exceed certain specified limits; and that allowance is made for future developments. The technologies of x-ray imaging have ...
Radiation Hygiene Requirements for IGRT (Image Guided
... Until now, verification of patient position has been performed with port films (PI) using the megavolt (MV) treatment beam (field control images, verification images), although films have recently been replaced with electronic portal imaging devices (EPIDs). Today, low energy photon sources (kV) and ...
... Until now, verification of patient position has been performed with port films (PI) using the megavolt (MV) treatment beam (field control images, verification images), although films have recently been replaced with electronic portal imaging devices (EPIDs). Today, low energy photon sources (kV) and ...
Full Text - RSNA Publications Online
... on effective dose equivalent and differences in tissue sensitivities. In diagnostic radiology, the main source of occupational dose is scattered radiation from the patient—particularly from fluoroscopically guided procedures. Personnel stand near patients for long times, and angulated geometries wit ...
... on effective dose equivalent and differences in tissue sensitivities. In diagnostic radiology, the main source of occupational dose is scattered radiation from the patient—particularly from fluoroscopically guided procedures. Personnel stand near patients for long times, and angulated geometries wit ...
Physician assistant knowledge of patient radiation exposure from
... evaluation of common complaints from patients. Radiographic use has more than doubled within the past 25 years (Mettler, Bhargavan et al., 2009), with roughly 377 million radiographic procedures performed annually in the United States (Hricak, Brenner et al., 2010). Since the beginning of medical im ...
... evaluation of common complaints from patients. Radiographic use has more than doubled within the past 25 years (Mettler, Bhargavan et al., 2009), with roughly 377 million radiographic procedures performed annually in the United States (Hricak, Brenner et al., 2010). Since the beginning of medical im ...
x-ray examinations in health care
... estimate. During those years when the patient dose determination is not performed, radiation exposure shall be monitored during quality control, for example (see item 5.2). The average patient dose determined for a specific imaging procedure shall be compared to the set reference level if one has be ...
... estimate. During those years when the patient dose determination is not performed, radiation exposure shall be monitored during quality control, for example (see item 5.2). The average patient dose determined for a specific imaging procedure shall be compared to the set reference level if one has be ...
Image Guided Patient Setup
... will evaluate different solutions that help reducing this PTV margin by reducing interfraction geometric uncertainties (often referred to as the set-up margin or SM, which takes into account uncertainties in patient position and beam alignment). This patient set-up error can have a systematic and a ...
... will evaluate different solutions that help reducing this PTV margin by reducing interfraction geometric uncertainties (often referred to as the set-up margin or SM, which takes into account uncertainties in patient position and beam alignment). This patient set-up error can have a systematic and a ...
design and implementation of an anthropomorphic quality
... scanning bed to eliminate interference-pattern artifacts found with use of the standard polished glass scanning bed. A mask was created for the scanning bed to exclude light contamination. This film-scanning system is based on the technique used by Dempsey et al. (10). Films were scanned at least 36 ...
... scanning bed to eliminate interference-pattern artifacts found with use of the standard polished glass scanning bed. A mask was created for the scanning bed to exclude light contamination. This film-scanning system is based on the technique used by Dempsey et al. (10). Films were scanned at least 36 ...
Web-based system for Quality Assurance of Radiation Oncology
... As described by Pawlicki et al. [1], the very first movements towards quality ...
... As described by Pawlicki et al. [1], the very first movements towards quality ...
Imaging in Radiotherapy, IAEA Consultant`s meeting report
... Imaging has become the primary source of information in the design of radiation therapy. As such, it is of critical importance that (i) the signal contained in these images is well understood, and, (ii) the spatial distribution is precise and accurate. Failure in this aspect to do so can result in s ...
... Imaging has become the primary source of information in the design of radiation therapy. As such, it is of critical importance that (i) the signal contained in these images is well understood, and, (ii) the spatial distribution is precise and accurate. Failure in this aspect to do so can result in s ...