IMAGING QUALITY ASSURANCE MANUAL
... linearity and timer accuracy. In addition, each department is responsible to submit the maintenance and required QA reports to the Radiation Safety Unit for their review. The RSU and the specific departments maintain these records consistent with NY State record requirements. The purpose of the Radi ...
... linearity and timer accuracy. In addition, each department is responsible to submit the maintenance and required QA reports to the Radiation Safety Unit for their review. The RSU and the specific departments maintain these records consistent with NY State record requirements. The purpose of the Radi ...
medical physics 2012/13
... MSC in Clinical Science programme. This Guide contains important information which will help the trainee understand how the work based programme operates and its key elements. 16. At the core of successful work based training is appropriate educational supervision, facilitation and feedback. Each tr ...
... MSC in Clinical Science programme. This Guide contains important information which will help the trainee understand how the work based programme operates and its key elements. 16. At the core of successful work based training is appropriate educational supervision, facilitation and feedback. Each tr ...
Evaluation and Validation of Computed Tomography Dose Accuracy
... fixed exposure parameter of 130kVp and varying tube current-time products from 140mAs to 300mAs for the CT head phantom examination, there were varying deviations in both the CTDIw and CTDIvol from the two techniques. Tube currents of 140 mAs, 240 mAs and 300 mAs yielded 3.5%, 0.61% and -6.45% devia ...
... fixed exposure parameter of 130kVp and varying tube current-time products from 140mAs to 300mAs for the CT head phantom examination, there were varying deviations in both the CTDIw and CTDIvol from the two techniques. Tube currents of 140 mAs, 240 mAs and 300 mAs yielded 3.5%, 0.61% and -6.45% devia ...
Surface radiation balance in Antarctica as measured with automatic
... for this idea is that changes in a due to snow metamorphism are small on a subdaily timescale. An additional advantage of this method is that riming/icing events can be easily detected and corrected by prescribing lower and upper bounds for aacc (in this paper we used 0.75 and 0.95, respectively). A ...
... for this idea is that changes in a due to snow metamorphism are small on a subdaily timescale. An additional advantage of this method is that riming/icing events can be easily detected and corrected by prescribing lower and upper bounds for aacc (in this paper we used 0.75 and 0.95, respectively). A ...
Principles of CT: Multislice CT
... Six-slice and 8-slice models were introduced by manufacturers as cost-effective alternatives. At the same time, 32-slice and 40-slice scanners were being introduced. By 2005, 64-slice scanners were announced, and installations by most manufacturers began. Detector array designs used by several manuf ...
... Six-slice and 8-slice models were introduced by manufacturers as cost-effective alternatives. At the same time, 32-slice and 40-slice scanners were being introduced. By 2005, 64-slice scanners were announced, and installations by most manufacturers began. Detector array designs used by several manuf ...
Moving Beam Helical CT Scanning
... a micro-computer (PC). The axial position and velocity of the table were controlled by an external power supply. The PC was synchronized with the scanner via a signal which indicates that X-rays were on. All scanning was done with two second scan times and 5 mm thick slices. The scanner's source-to- ...
... a micro-computer (PC). The axial position and velocity of the table were controlled by an external power supply. The PC was synchronized with the scanner via a signal which indicates that X-rays were on. All scanning was done with two second scan times and 5 mm thick slices. The scanner's source-to- ...
CONE BEAM COMPUTED TOMOGRAPHY THREE-DIMENSIONAL RECONSTRUCTION FOR EVALUATION OF THE MANDIBULAR CONDYLE
... the tissue of interest to be examined through progressive crossectional slices in a chosen plane of orientation; while the other produces 3D reconstructions capable of being manipulated in any given direction, thereby facilitating and expediting the examination procedure. Often, these two viewing me ...
... the tissue of interest to be examined through progressive crossectional slices in a chosen plane of orientation; while the other produces 3D reconstructions capable of being manipulated in any given direction, thereby facilitating and expediting the examination procedure. Often, these two viewing me ...
Quantitative assessment of MRI lesion load in multiple sclerosis
... The median lesion load was 7185 mm3 (range = 367526961 mm3) on CSE images and 8418 mm3 (range = 474030116 mm3) on the fast-FLAIR (using the Wilcoxon Rank Signed test, difference = 28; P = 0.02). Thus, the average increase was 18% (range = 11.6-29%) for the latter. The lesion volumes measured using f ...
... The median lesion load was 7185 mm3 (range = 367526961 mm3) on CSE images and 8418 mm3 (range = 474030116 mm3) on the fast-FLAIR (using the Wilcoxon Rank Signed test, difference = 28; P = 0.02). Thus, the average increase was 18% (range = 11.6-29%) for the latter. The lesion volumes measured using f ...
Diffuse optical tomography of breast cancer during
... responds to neoadjuvant chemotherapy, the size of the primary tumor decreases, facilitating better control through surgery while potentially eradicating micrometastatic disease.1 Neoadjuvant chemotherapy enables a higher percentage of patients to undergo breast conservation therapy without negativel ...
... responds to neoadjuvant chemotherapy, the size of the primary tumor decreases, facilitating better control through surgery while potentially eradicating micrometastatic disease.1 Neoadjuvant chemotherapy enables a higher percentage of patients to undergo breast conservation therapy without negativel ...
Radiological Evaluation of Knee Pain
... • Distance between the tibial tubercle and trochlear groove is shown in orange. • Normal distance <2 cm • Longer distance may contribute to a patellar tracking problem ...
... • Distance between the tibial tubercle and trochlear groove is shown in orange. • Normal distance <2 cm • Longer distance may contribute to a patellar tracking problem ...
European Journal of Medical Physics
... and PET/CT. In Switzerland, since January 2012, medical physicists have to be involved with the medical team dealing with “high dose procedures” such as the ones mentioned above to strengthen the optimization process. This new role for medical physicists has a strong potential in the framework of me ...
... and PET/CT. In Switzerland, since January 2012, medical physicists have to be involved with the medical team dealing with “high dose procedures” such as the ones mentioned above to strengthen the optimization process. This new role for medical physicists has a strong potential in the framework of me ...
New dimensions in endodontic imaging: Part 2. Cone beam
... Received 9 July 2008; accepted 1 December 2008 ...
... Received 9 July 2008; accepted 1 December 2008 ...
Comparing the performance of visual estimation and standard
... due to the increased inflammation in the patients with chronic pancreatitis. It has been reported that inflammation can give rise to focal FDG uptake in the same intensity range as pancreatic neoplasm, even when clinical, laboratory, and CT findings suggestive of an inflammatory etiology are equivoc ...
... due to the increased inflammation in the patients with chronic pancreatitis. It has been reported that inflammation can give rise to focal FDG uptake in the same intensity range as pancreatic neoplasm, even when clinical, laboratory, and CT findings suggestive of an inflammatory etiology are equivoc ...
Panoramic Radiography Tips
... sizes, and shows the limitations of two different film/screen combinations. The area of interest is between 120% and 160% in magnification typical of most panoramic and tomographic machines. The curves show conclusively that using the smallest focal spot possible and minimizing magnification decreas ...
... sizes, and shows the limitations of two different film/screen combinations. The area of interest is between 120% and 160% in magnification typical of most panoramic and tomographic machines. The curves show conclusively that using the smallest focal spot possible and minimizing magnification decreas ...
Chapter 540: Radiology, Nuclear Medicine and Radiation Oncology
... Imaging resources may be distributed throughout the MTF; therefore, imaging resources are covered in other Space Planning Criteria chapters. For example, the Emergency Department (Chapter 350) provides CT and General Radiology rooms, while Women’s Health (Chapter 360) provides Mammography, Fluorosco ...
... Imaging resources may be distributed throughout the MTF; therefore, imaging resources are covered in other Space Planning Criteria chapters. For example, the Emergency Department (Chapter 350) provides CT and General Radiology rooms, while Women’s Health (Chapter 360) provides Mammography, Fluorosco ...
Granulomatous Meningoencephalomyelitis in Dogs
... imaging modalities identify lesions consistent with focal and multifocal GME.7,9,10 Magnetic resonance imaging (MRI) has significant advantages over computed tomography (CT) when used for generating images of the brain. 9 Specifically, MRI images have greater anatomic detail and fewer artifacts asso ...
... imaging modalities identify lesions consistent with focal and multifocal GME.7,9,10 Magnetic resonance imaging (MRI) has significant advantages over computed tomography (CT) when used for generating images of the brain. 9 Specifically, MRI images have greater anatomic detail and fewer artifacts asso ...
Imaging of the Female Pelvis: Evaluation of a Submucosal Rectal Mass
... Damani and Wilson. Nongynecologic Applications of Transvaginal US. Radiographics. 1999;19:S179S200. Fielding. MR Imaging of the Female Pelvis. Radiol Clin North Am. 2003; 41: 179-192. Greenfield et al. Surgery: Scientific Principles and Practice. 2001. Hamm. MR imaging and CT of the female pelvis: r ...
... Damani and Wilson. Nongynecologic Applications of Transvaginal US. Radiographics. 1999;19:S179S200. Fielding. MR Imaging of the Female Pelvis. Radiol Clin North Am. 2003; 41: 179-192. Greenfield et al. Surgery: Scientific Principles and Practice. 2001. Hamm. MR imaging and CT of the female pelvis: r ...
Managing Patient Dose in Multi-Detector Computed Tomography
... There are a number of new influencing parameters specific to MDCT which systematically increase or decrease patient dose compared to single-detector row CT scanners (SDCT). As in earlier developments in CT, there is potential for dose reduction, but the actual dose reduction depends upon how the sys ...
... There are a number of new influencing parameters specific to MDCT which systematically increase or decrease patient dose compared to single-detector row CT scanners (SDCT). As in earlier developments in CT, there is potential for dose reduction, but the actual dose reduction depends upon how the sys ...
American Association of Physicists in Medicine 40th Annual
... A and B. Blocks C and D correspond primarily to the scientific sessions, however there is an occasional symposium in these time blocks as well. Block E is reserved primarily to the afternoon symposia, however occasionally scientific sessions may be in these time blocks as well. In general, Tracks 1 ...
... A and B. Blocks C and D correspond primarily to the scientific sessions, however there is an occasional symposium in these time blocks as well. Block E is reserved primarily to the afternoon symposia, however occasionally scientific sessions may be in these time blocks as well. In general, Tracks 1 ...
Dental CBCT performance testing for physicists and technologists
... There is a lack of good quality evidence for the diagnostic efficacy of dental CBCT, apart from its uses in implant dentistry. Intuitively, three-dimensional information seems likely to be an advantage to dentists, particularly for planning surgery or for endodontic (“root canal”) procedures. Howeve ...
... There is a lack of good quality evidence for the diagnostic efficacy of dental CBCT, apart from its uses in implant dentistry. Intuitively, three-dimensional information seems likely to be an advantage to dentists, particularly for planning surgery or for endodontic (“root canal”) procedures. Howeve ...
Multiple Sclerosis lesion segmentation using Active Contours model
... and a topology preservation criterion is used to guarantee the topological equivalence between the atlas and the patient images [24,1]. However, multiple atlases are required to ensure this strict correspondence. In outlier-based methods [8], MS lesions are detected as the outliers to the normal bra ...
... and a topology preservation criterion is used to guarantee the topological equivalence between the atlas and the patient images [24,1]. However, multiple atlases are required to ensure this strict correspondence. In outlier-based methods [8], MS lesions are detected as the outliers to the normal bra ...
Application of Partial Volume Effect Correction and 4D PET in the
... acquisition [5–7]. One of the most commonly used techniques is respiratory gating, which consists in dividing a PET dataset into distinct phases of the respiratory cycle [8, 9]. Respiratory cycle information may be obtained with the use of external devices (pressure sensor belts or spirometry system ...
... acquisition [5–7]. One of the most commonly used techniques is respiratory gating, which consists in dividing a PET dataset into distinct phases of the respiratory cycle [8, 9]. Respiratory cycle information may be obtained with the use of external devices (pressure sensor belts or spirometry system ...
Radiation Dose in Computed Tomography Understanding Breast
... ABLAVAR™ Injection: As with other contrast media: the possibility of serious or life-threatening anaphylactic or anaphylactoid reactions, including cardiovascular, respiratory and/or cutaneous manifestations, should always be considered. As with other paramagnetic contrast agents, caution should be ...
... ABLAVAR™ Injection: As with other contrast media: the possibility of serious or life-threatening anaphylactic or anaphylactoid reactions, including cardiovascular, respiratory and/or cutaneous manifestations, should always be considered. As with other paramagnetic contrast agents, caution should be ...
10 Production and Selection of Metal PET Radioisotopes for
... PET have optimum resolutions of approximately 4-6 mm and 2 mm (Lancelot, S. & Zimmer, L., 2010). For animal PET, the radial distance of the detector is smaller therefore the achievable spatial resolution is 1-2 mm (using 18F). Because the detectors are closer, images can be significantly affected (i ...
... PET have optimum resolutions of approximately 4-6 mm and 2 mm (Lancelot, S. & Zimmer, L., 2010). For animal PET, the radial distance of the detector is smaller therefore the achievable spatial resolution is 1-2 mm (using 18F). Because the detectors are closer, images can be significantly affected (i ...
chapter 221. x-rays in the healing arts general provisions
... Beam-limiting device—A device providing a means to restrict the dimensions of the X-ray field. Certified components—Components of X-ray systems which are subject to regulations promulgated under the Radiation Control for Health and Safety Act of 1968 (42 U.S.C.A. §§ 263b—263n). Cephalometric device— ...
... Beam-limiting device—A device providing a means to restrict the dimensions of the X-ray field. Certified components—Components of X-ray systems which are subject to regulations promulgated under the Radiation Control for Health and Safety Act of 1968 (42 U.S.C.A. §§ 263b—263n). Cephalometric device— ...