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... implemented with dual -source CT (DSCT) system McCollough, C. H. et al. Radiology 2007;243:775-784 ...
... implemented with dual -source CT (DSCT) system McCollough, C. H. et al. Radiology 2007;243:775-784 ...
Dosimetric verification of respiratory
... beam comes out of a part of the accelerator called a gantry, which can be rotated around the patient. Radiation can be delivered to the tumor from any angle by rotating the gantry and moving the treatment couch. Today’s linear accelerators are very complex and include image guidance system such as c ...
... beam comes out of a part of the accelerator called a gantry, which can be rotated around the patient. Radiation can be delivered to the tumor from any angle by rotating the gantry and moving the treatment couch. Today’s linear accelerators are very complex and include image guidance system such as c ...
Management of pediatric radiation dose using
... Current flying-spot CR systems (i.e., systems in which a laser beam is scanned systematically across the IP surface to read the latent image) have raw imaging performance that is generally comparable to that of screen/ film systems. This performance is typically measured in terms of an input/output re ...
... Current flying-spot CR systems (i.e., systems in which a laser beam is scanned systematically across the IP surface to read the latent image) have raw imaging performance that is generally comparable to that of screen/ film systems. This performance is typically measured in terms of an input/output re ...
Flash Speed. Lowest Dose.
... Lower dose pediatric scanning HiDynamics in the Stellar Detectors increases the detectors’ dynamic range and sensitivity, extending the scan range as low as 70 kV with the revised Straton X-ray tube and the CARE Child feature. This pediatric scan mode is safer and takes into account the specific ana ...
... Lower dose pediatric scanning HiDynamics in the Stellar Detectors increases the detectors’ dynamic range and sensitivity, extending the scan range as low as 70 kV with the revised Straton X-ray tube and the CARE Child feature. This pediatric scan mode is safer and takes into account the specific ana ...
Image reconstruction
... introduced by Donoho (1995) is another possible tool for solving this problem but so far has been the object of relatively little attention in the reconstruction community. The finite-element basis allows fitting of the image sampling to the object being reconstructed, and may therefore provide an e ...
... introduced by Donoho (1995) is another possible tool for solving this problem but so far has been the object of relatively little attention in the reconstruction community. The finite-element basis allows fitting of the image sampling to the object being reconstructed, and may therefore provide an e ...
AAPM Report No 249
... There is a clear need for established standards for medical physics residency training. The complexity of techniques in imaging, nuclear medicine, and radiation oncology continues to increase with each passing year. It is therefore imperative that training requirements and competencies are routinely ...
... There is a clear need for established standards for medical physics residency training. The complexity of techniques in imaging, nuclear medicine, and radiation oncology continues to increase with each passing year. It is therefore imperative that training requirements and competencies are routinely ...
R4 - American College of Radiology
... The MBS may be performed because of known or suspected swallowing dysfunction or because of the presence of conditions that are strongly associated with swallowing dysfunction. The MBS should be performed only for a valid medical reason and with the minimum radiation dose necessary to achieve a stud ...
... The MBS may be performed because of known or suspected swallowing dysfunction or because of the presence of conditions that are strongly associated with swallowing dysfunction. The MBS should be performed only for a valid medical reason and with the minimum radiation dose necessary to achieve a stud ...
MRI Acronym Guide - Hitachi Medical Systems America, Inc.
... Dynamic contrast enhanced T2* perfusion uses maps to analyze blood flow volumes. Non contrast arterial spin labeling brain perfusion capability generating a CBF map. ...
... Dynamic contrast enhanced T2* perfusion uses maps to analyze blood flow volumes. Non contrast arterial spin labeling brain perfusion capability generating a CBF map. ...
Radiation Hygiene Requirements for IGRT (Image Guided
... isocentre with the treatment beam (MV imaging) because of better image quality and lower dose. In future, using the treatment beam for imaging should be limited to the purpose of monitoring the radiation field, which is required under radiation protection legislation. Three-dimensional imaging can b ...
... isocentre with the treatment beam (MV imaging) because of better image quality and lower dose. In future, using the treatment beam for imaging should be limited to the purpose of monitoring the radiation field, which is required under radiation protection legislation. Three-dimensional imaging can b ...
ACR–ASNR–SPR Practice Parameter for the Performance of
... more benign pathologies, including radiation necrosis and chemonecrosis, will have lower K trans and Vp, but higher EES. 3. Arterial spin-labeling perfusion MRI a. Technique Arterial spin-labeling (ASL) perfusion MRI uses magnetically labeled endogenous blood water as a tracer to derive information ...
... more benign pathologies, including radiation necrosis and chemonecrosis, will have lower K trans and Vp, but higher EES. 3. Arterial spin-labeling perfusion MRI a. Technique Arterial spin-labeling (ASL) perfusion MRI uses magnetically labeled endogenous blood water as a tracer to derive information ...
Image quality vs radiation dose of four cone beam computed
... through the point cloud of the laser data in such a way that this function evaluates to zero on the surface, negative inside the surface and positive outside. The function was evaluated on a cubical grid in which the complete mandible was situated. This grid had a voxel size of 0.1 mm. As a result, ...
... through the point cloud of the laser data in such a way that this function evaluates to zero on the surface, negative inside the surface and positive outside. The function was evaluated on a cubical grid in which the complete mandible was situated. This grid had a voxel size of 0.1 mm. As a result, ...
PDF Version of this Article
... the bore. Therefore it is not possible to obtain images of the knee if the patient has a cast on the ankle of the same leg, and patients with limited ankle mobility may find it difficult or impossible to insert their leg. Finally, limited hip mobility can make it uncomfortable for a patient to separ ...
... the bore. Therefore it is not possible to obtain images of the knee if the patient has a cast on the ankle of the same leg, and patients with limited ankle mobility may find it difficult or impossible to insert their leg. Finally, limited hip mobility can make it uncomfortable for a patient to separ ...
NDAC TITLE 114 ND MEDICAL IMAGING and RADIATION
... 10. “Cardiac vascular interventional technologist”, means an individual, other than a licensed practitioner, that is responsible for the administration of ionizing radiation to humans for diagnostic, therapeutic or research purposes. 11. "Certification organization" means a national certification or ...
... 10. “Cardiac vascular interventional technologist”, means an individual, other than a licensed practitioner, that is responsible for the administration of ionizing radiation to humans for diagnostic, therapeutic or research purposes. 11. "Certification organization" means a national certification or ...
Presentation - College of American Pathologists
... 1. To understand types of medical imaging workstations, their motivation, interfaces, workflow and standards 2. Identify sources of information and software that help introduce technology and aid decision making 3. To appreciate what other medical specialties have done to implement and standardize i ...
... 1. To understand types of medical imaging workstations, their motivation, interfaces, workflow and standards 2. Identify sources of information and software that help introduce technology and aid decision making 3. To appreciate what other medical specialties have done to implement and standardize i ...
Image reconstruction Ð a tutorial
... your camera and take a picture of it. In order to get a better representation of the building, you decide to take more pictures of it from different angles. This principle applies in medical imaging, where an accurate internal image is obtained by combining pictures from different views. In nuclear ...
... your camera and take a picture of it. In order to get a better representation of the building, you decide to take more pictures of it from different angles. This principle applies in medical imaging, where an accurate internal image is obtained by combining pictures from different views. In nuclear ...
(OPEIR) Performance Measure Set
... recommendation, gaps in care, validity, and feasibility. Other Potential Measures The Work Group considered several other important constructs related to the optimization of patient exposure to ionizing radiation, though ultimately determined that they were not suitable in the context of this perfor ...
... recommendation, gaps in care, validity, and feasibility. Other Potential Measures The Work Group considered several other important constructs related to the optimization of patient exposure to ionizing radiation, though ultimately determined that they were not suitable in the context of this perfor ...
Review of SPECT Myocardial Perfusion Imaging
... agents are primarily used for SPECT MPI now. It is well-known that the 140 KeV photopeak from Tc-99m isomeric transition is ideal for gamma camera imaging. For perfusion studies, the primary agents bound to Tc99m are tetrofosmin and sestamibi. Both agents are lipophilic and, therefore, enter myocard ...
... agents are primarily used for SPECT MPI now. It is well-known that the 140 KeV photopeak from Tc-99m isomeric transition is ideal for gamma camera imaging. For perfusion studies, the primary agents bound to Tc99m are tetrofosmin and sestamibi. Both agents are lipophilic and, therefore, enter myocard ...
Has Transit Dosimetry Come Of Age
... ...during the last few years rather intensive efforts have led to the development of techniques that produce images using high-energy high X- rays directly. As a result, electronic portal imaging devices (EPIDs) are becoming available to cancer radiotherapy. In some systems, a small fraction of the ...
... ...during the last few years rather intensive efforts have led to the development of techniques that produce images using high-energy high X- rays directly. As a result, electronic portal imaging devices (EPIDs) are becoming available to cancer radiotherapy. In some systems, a small fraction of the ...
Nuclear medicine
Nuclear medicine is a medical specialty involving the application of radioactive substances in the diagnosis and treatment of disease. Nuclear medicine scans are usually conducted by radiographers. Nuclear medicine, in a sense, is ""radiology done inside out"" or ""endoradiology"" because it records radiation emitting from within the body rather than radiation that is generated by external sources like X-rays.