Guidelines for 18 F-FDG PET and PET-CT imaging in
... patient’s radiation dose is achieved by lowering the tube voltage or tube current, increasing the rotation speed, and/or applying higher pitch factor. In addition, online dose modulation systems are used to lower radiation burden. The question whether PET-CT is preferable compared to stand-alone PET ...
... patient’s radiation dose is achieved by lowering the tube voltage or tube current, increasing the rotation speed, and/or applying higher pitch factor. In addition, online dose modulation systems are used to lower radiation burden. The question whether PET-CT is preferable compared to stand-alone PET ...
Review of X-ray Detectors for Medical Imaging
... C CCDs for very high spatial resolution C Organic semiconductors C Fast volume CT scanners C Energy-resolved methods C Quanta-counting detection C Monochromatic X-ray imaging C Phase contrast imaging C Terahertz imaging Innovations Future Concepts X-ray Reconstruction & Algorithms Martin Hoheisel Vo ...
... C CCDs for very high spatial resolution C Organic semiconductors C Fast volume CT scanners C Energy-resolved methods C Quanta-counting detection C Monochromatic X-ray imaging C Phase contrast imaging C Terahertz imaging Innovations Future Concepts X-ray Reconstruction & Algorithms Martin Hoheisel Vo ...
Trends in radiation protection of positron emission tomography
... tomography (PET) and computed tomography (CT) on a single gantry as a hybrid PET/CT scanner. This provides both anatomical and functional images of the patient as a fused image. Since its introduction in 1998 (Beyer et al., 2000), PET/ CT has become an important imaging modality worldwide. PET/CT is ...
... tomography (PET) and computed tomography (CT) on a single gantry as a hybrid PET/CT scanner. This provides both anatomical and functional images of the patient as a fused image. Since its introduction in 1998 (Beyer et al., 2000), PET/ CT has become an important imaging modality worldwide. PET/CT is ...
Powerpoint 5.3M - University of Surrey
... Gel dosimetry is a way of achieving this in special test objects (phantoms) filled with a radiosensitive gel. Monte Carlo simulation is known to be capable of high accuracy … but … we still need experimental verification that delivery occurred as expected. ...
... Gel dosimetry is a way of achieving this in special test objects (phantoms) filled with a radiosensitive gel. Monte Carlo simulation is known to be capable of high accuracy … but … we still need experimental verification that delivery occurred as expected. ...
Verification of high energy photon photonuclear reactions
... al. 2004). Range information was deduced from imaging the pronounced activity peak formed by the 11C projectile fragments stopping shortly before the end point of the primary 12C beam. In 1996/1997 the first in-beam positron camera that allowed monitoring of the ion range and the lateral dose deposi ...
... al. 2004). Range information was deduced from imaging the pronounced activity peak formed by the 11C projectile fragments stopping shortly before the end point of the primary 12C beam. In 1996/1997 the first in-beam positron camera that allowed monitoring of the ion range and the lateral dose deposi ...
AAPM Medical Physics Practice Guideline 2.a: Commissioning and
... therapy) or as a necessary and critical component of the treatment process (as in the case of stereotactic body radiation therapy(1)). Currently, IGRT strategies are being used more than ever before, and various forms of IGRT have been, are, and will continue to be important tools in radiation thera ...
... therapy) or as a necessary and critical component of the treatment process (as in the case of stereotactic body radiation therapy(1)). Currently, IGRT strategies are being used more than ever before, and various forms of IGRT have been, are, and will continue to be important tools in radiation thera ...
Diag Radiology And Nuclear Medicine
... include the procedures on the attached procedure list and such other procedures that are extensions of the same techniques and skills. See Attachment #2. Other (please list) ...
... include the procedures on the attached procedure list and such other procedures that are extensions of the same techniques and skills. See Attachment #2. Other (please list) ...
Title Evaluation of radiation dose and image quality for the Varian
... The aim of this study is to evaluate the kV imaging dose of the most common head-and-neck and pelvic protocols for the CBCT system with software Version 1.4.13 (referred to as “new” protocol in the following text) provided by the vendors that are in current clinical use and compare them with the pre ...
... The aim of this study is to evaluate the kV imaging dose of the most common head-and-neck and pelvic protocols for the CBCT system with software Version 1.4.13 (referred to as “new” protocol in the following text) provided by the vendors that are in current clinical use and compare them with the pre ...
Beam-restricting Devices & Grids
... Resolution is the ability to image two separate objects and visually distinguish one from the other Spatial resolution is the ability to image small objects that have high subject contrast (eg. bone-soft tissue interface, calcified lung nodules) Determined by focal-spot size and other factors th ...
... Resolution is the ability to image two separate objects and visually distinguish one from the other Spatial resolution is the ability to image small objects that have high subject contrast (eg. bone-soft tissue interface, calcified lung nodules) Determined by focal-spot size and other factors th ...
Eisenberg: Comprehensive Radiographic Pathology, 5th Edition
... NOT: Rationale: Scanning a slice of tissue from multiple angles with a narrow x-ray beam, then calculating a relative linear attenuation coefficient (representing the amount of radiation absorbed in tissue for the various tissue elements in the section), and finally displaying the computed reconstru ...
... NOT: Rationale: Scanning a slice of tissue from multiple angles with a narrow x-ray beam, then calculating a relative linear attenuation coefficient (representing the amount of radiation absorbed in tissue for the various tissue elements in the section), and finally displaying the computed reconstru ...
Radiation Dose in Computed Tomography Understanding Breast
... and provide them the tools and resources necessary to pursue professional research funding and publication cannot be underestimated. To date, however, there have been few studies on the possible barriers that interfere with both research and professional publishing among these highly educated indivi ...
... and provide them the tools and resources necessary to pursue professional research funding and publication cannot be underestimated. To date, however, there have been few studies on the possible barriers that interfere with both research and professional publishing among these highly educated indivi ...
Imaging in Radiotherapy, IAEA Consultant`s meeting report
... CT in radiotherapy is a well established and mature technology and enables 3-D conformal and intensity modulated radiotherapy. Nevertheless, for institutions that do not have 3-D technology, the 2-D to 3-D transition is a significant change. Training is needed on 3-D imaging, planning, data transfer ...
... CT in radiotherapy is a well established and mature technology and enables 3-D conformal and intensity modulated radiotherapy. Nevertheless, for institutions that do not have 3-D technology, the 2-D to 3-D transition is a significant change. Training is needed on 3-D imaging, planning, data transfer ...
Imaging in radiotherapy - Nuclear Sciences and Applications
... Computed tomography (CT) is and will be likely to remain the predominant volumetric imaging modality for radiotherapy. In common with other volumetric imaging modalities, CT is used to delineate tumour (Gross Tumour Volume, GTV), suspected tumour (Clinical Target Volume, CTV) and normal structures. ...
... Computed tomography (CT) is and will be likely to remain the predominant volumetric imaging modality for radiotherapy. In common with other volumetric imaging modalities, CT is used to delineate tumour (Gross Tumour Volume, GTV), suspected tumour (Clinical Target Volume, CTV) and normal structures. ...
Radiation dose reduction in computed tomography
... fast scanning speed and isotropic spatial resolu‑ tion at 0.3–0.4 mm, CT allows physicians to diagnose injuries and disease more quickly, safely and accurately than alternative more invasive or less sensitive imaging techniques. CT imaging also plays a major role in the staging, treatment planning a ...
... fast scanning speed and isotropic spatial resolu‑ tion at 0.3–0.4 mm, CT allows physicians to diagnose injuries and disease more quickly, safely and accurately than alternative more invasive or less sensitive imaging techniques. CT imaging also plays a major role in the staging, treatment planning a ...
Quality assurance for computed-tomography simulators and the
... would be used in conjunction with the other two reports. When a topic is discussed by the current task group, which is also addressed in Report No. 39 or the TG53 report, this document provides a description of the QA requirements and the reader is then referred to the report in which this topic was ...
... would be used in conjunction with the other two reports. When a topic is discussed by the current task group, which is also addressed in Report No. 39 or the TG53 report, this document provides a description of the QA requirements and the reader is then referred to the report in which this topic was ...
Article (Published version)
... modalities (i.e., CT, SPECT, and PET) make use only of primary radiation whereas scattered radiation is considered as noise and then is routinely eliminated, or at least compensated for [3]. Thus, the idea is to explore whether a bimodal imaging system can be built based exclusively on the exploitat ...
... modalities (i.e., CT, SPECT, and PET) make use only of primary radiation whereas scattered radiation is considered as noise and then is routinely eliminated, or at least compensated for [3]. Thus, the idea is to explore whether a bimodal imaging system can be built based exclusively on the exploitat ...
Dose Management Update for Advocate Healthcare
... (QA) program for CT… ” (AAPM Medical Physics Practice Guideline 1.a: CT Protocol Management and Review Practice Guideline) ...
... (QA) program for CT… ” (AAPM Medical Physics Practice Guideline 1.a: CT Protocol Management and Review Practice Guideline) ...
Cone beam-computed tomography applications in endodontics: A
... far higher than its prevalence in evaluations carried out by periapical or panoramic radiography.[20] 2. To assess the tooth and its related complications morphologically, like a curve in the root. Sub-canals and the existence of additional canal the lack of which is highly probable.[21] The existen ...
... far higher than its prevalence in evaluations carried out by periapical or panoramic radiography.[20] 2. To assess the tooth and its related complications morphologically, like a curve in the root. Sub-canals and the existence of additional canal the lack of which is highly probable.[21] The existen ...
An Introduction to Fluoroscopy Safety
... may resolve with time. Often there is a dose threshold above which the injury becomes detectable. Radiation dermatitis is an example. When predicting a deterministic injury, recent radiation exposure is more important than exposure months or years in the past. ...
... may resolve with time. Often there is a dose threshold above which the injury becomes detectable. Radiation dermatitis is an example. When predicting a deterministic injury, recent radiation exposure is more important than exposure months or years in the past. ...
Hologic HTC Grids Article
... Differences in contrast between mammographic images of the ACR Accreditation Phantom made with the HTC and linear grids are apparent in the original images. The total number of objects visible on the films of the phantom without additional absorber was 13 for the HTC grid images and 12 for the linea ...
... Differences in contrast between mammographic images of the ACR Accreditation Phantom made with the HTC and linear grids are apparent in the original images. The total number of objects visible on the films of the phantom without additional absorber was 13 for the HTC grid images and 12 for the linea ...
Package Insert - Zevacor Molecular
... the drug to the mother. The body of scientific information related to radioactivity decay, drug tissue distribution and drug elimination shows that less than 0.01% of the radioactivity administered remains in the body after 24 hours (10 half-lives). To minimize the risks to a nursing infant, interru ...
... the drug to the mother. The body of scientific information related to radioactivity decay, drug tissue distribution and drug elimination shows that less than 0.01% of the radioactivity administered remains in the body after 24 hours (10 half-lives). To minimize the risks to a nursing infant, interru ...
R40 - American College of Radiology
... NOT FOR PUBLICATION, QUOTATION, OR CITATION The practice of medicine involves not only the science, but also the art of dealing with the prevention, diagnosis, alleviation, and treatment of disease. The variety and complexity of human conditions make it impossible to always reach the most appropria ...
... NOT FOR PUBLICATION, QUOTATION, OR CITATION The practice of medicine involves not only the science, but also the art of dealing with the prevention, diagnosis, alleviation, and treatment of disease. The variety and complexity of human conditions make it impossible to always reach the most appropria ...
Patient and Staff Radiological Protection in Cardiology
... personal monitoring badges is necessary in cardiac catheterization laboratories in order to monitor and audit occupational radiation dose. 5. Radiological protection for nuclear cardiology Appropriate use criteria and guidelines that help to set standards for justification of nuclear cardiology proc ...
... personal monitoring badges is necessary in cardiac catheterization laboratories in order to monitor and audit occupational radiation dose. 5. Radiological protection for nuclear cardiology Appropriate use criteria and guidelines that help to set standards for justification of nuclear cardiology proc ...
Proceedings 6e Lustrum - Netherlands Commission on Radiation
... prescription, data entry, use of catheters or applicators. Some specific source positioning errors have been seen with the HDR afterloading techniques but different from LDR. Examples of such errors include applicator reconstruction errors, use of wrong applicator length or offset, wrong source step ...
... prescription, data entry, use of catheters or applicators. Some specific source positioning errors have been seen with the HDR afterloading techniques but different from LDR. Examples of such errors include applicator reconstruction errors, use of wrong applicator length or offset, wrong source step ...