DICOM Conformance Template
... data element information is subject to change without notice. If, however, the device is acting as a "full fidelity storage device", it should retain and re-transmit all of the private data elements which are sent by GEHC devices. 1.5 IMPORTANT REMARKS The use of these DICOM Conformance Statements, ...
... data element information is subject to change without notice. If, however, the device is acting as a "full fidelity storage device", it should retain and re-transmit all of the private data elements which are sent by GEHC devices. 1.5 IMPORTANT REMARKS The use of these DICOM Conformance Statements, ...
Energy Subtraction Methods as an Alternative to Conventional X
... mask and contrasted images which cause motion artifacts. An alternative approach, known as dual-energy or energy subtraction angiography (ESA) is one that exploits the iodine kedge by acquiring images with a low and high kV in rapid succession. The idea for ESA is to bring the benefits of DSA to car ...
... mask and contrasted images which cause motion artifacts. An alternative approach, known as dual-energy or energy subtraction angiography (ESA) is one that exploits the iodine kedge by acquiring images with a low and high kV in rapid succession. The idea for ESA is to bring the benefits of DSA to car ...
Installation of Imaging Modalities
... Molecular Imaging / Nuclear Medicine / Gamma Camera • A patient ingests or is injected with a small amount of radioactive material. The radioactive material gives off gamma rays that can be detected by a special camera that produces computerized images ...
... Molecular Imaging / Nuclear Medicine / Gamma Camera • A patient ingests or is injected with a small amount of radioactive material. The radioactive material gives off gamma rays that can be detected by a special camera that produces computerized images ...
DoseWatch Ver. 1.3, 1.4: Direction # DOC1203862
... data element information is subject to change without notice. If, however, the device is acting as a "full fidelity storage device", it should retain and re-transmit all of the private data elements which are sent by GEHC devices. 1.5 IMPORTANT REMARKS The use of these DICOM Conformance Statements, ...
... data element information is subject to change without notice. If, however, the device is acting as a "full fidelity storage device", it should retain and re-transmit all of the private data elements which are sent by GEHC devices. 1.5 IMPORTANT REMARKS The use of these DICOM Conformance Statements, ...
dual energy computed tomography for proton therapy treatment
... Proton radiation therapy is gaining popularity because of the unique characteristics of its dose distribution, e.g., high dose-gradient at the distal end of the percentage-depth-dose curve (known as the Bragg peak). The high dose-gradient offers the possibility of delivering high dose to the target ...
... Proton radiation therapy is gaining popularity because of the unique characteristics of its dose distribution, e.g., high dose-gradient at the distal end of the percentage-depth-dose curve (known as the Bragg peak). The high dose-gradient offers the possibility of delivering high dose to the target ...
evaluation of a diffraction-enhanced imaging (dei)
... clinical translation and application studies are needed before the DEI system can be established as a useful breast imaging modality. This dissertation focuses on several important studies toward the development of a clinical DEI system. First, contrast-enhanced DEI was explored using commercially a ...
... clinical translation and application studies are needed before the DEI system can be established as a useful breast imaging modality. This dissertation focuses on several important studies toward the development of a clinical DEI system. First, contrast-enhanced DEI was explored using commercially a ...
Quantification in fluorine-18-fluorodeoxyglucose dedicated breast
... (A) Pre-contrast CT, (B) fused PET/CT, and (C) contrast subtraction sagittal DbPET/CT images showing the affected breast of the case 4 subject. Two areas of focal uptake were seen on PET (B) and on contrast subtraction CT (C) (arrows). (B) The distance (opposing arrows) between the top of the PET ax ...
... (A) Pre-contrast CT, (B) fused PET/CT, and (C) contrast subtraction sagittal DbPET/CT images showing the affected breast of the case 4 subject. Two areas of focal uptake were seen on PET (B) and on contrast subtraction CT (C) (arrows). (B) The distance (opposing arrows) between the top of the PET ax ...
Clinical Training of Medical Physicists Specializing in Diagnostic
... technical aspects of this work is undertaken by the medical physicist. To ensure good practice in this vital area, structured clinical training programmes are required to complement academic learning. This publication is intended to be a guide to the practical implementation of such a programme for ...
... technical aspects of this work is undertaken by the medical physicist. To ensure good practice in this vital area, structured clinical training programmes are required to complement academic learning. This publication is intended to be a guide to the practical implementation of such a programme for ...
Design and Preliminary Accuracy Studies of an MRI
... manipulator axis to be translated forward and backward via a two stage cumulative screw mechanism. The push rod is connected to the steerable needle channel, thus rotating the needle channel about the hinge axis and controlling the needle angle. A narrow slot on the bottom of the endorectal sheath a ...
... manipulator axis to be translated forward and backward via a two stage cumulative screw mechanism. The push rod is connected to the steerable needle channel, thus rotating the needle channel about the hinge axis and controlling the needle angle. A narrow slot on the bottom of the endorectal sheath a ...
Development and Implementation of an Anthropomorphic Pediatric
... dose deposition to the target volume while sparing the surrounding healthy tissue. This technique is advantageous for craniospinal pediatric patients, as it reduces the radiation side effects that can occur. The purpose of this study is to design an anthropomorphic pediatric spine phantom for use in ...
... dose deposition to the target volume while sparing the surrounding healthy tissue. This technique is advantageous for craniospinal pediatric patients, as it reduces the radiation side effects that can occur. The purpose of this study is to design an anthropomorphic pediatric spine phantom for use in ...
routine head (brain)
... While there may be some situations where this is not possible due to scanner or patient positioning limitations, it is considered good practice to perform one or both of these maneuvers whenever possible. SCAN RANGE: Top of C1 lamina through top of calvarium. CONTRAST: • Oral: None. • Injected: Some ...
... While there may be some situations where this is not possible due to scanner or patient positioning limitations, it is considered good practice to perform one or both of these maneuvers whenever possible. SCAN RANGE: Top of C1 lamina through top of calvarium. CONTRAST: • Oral: None. • Injected: Some ...
American Association of Physicists in Medicine 40th Annual
... This is a landmark year for the Annual Meeting for two prominent reasons. For the first time, both the positions of Scientific Program Director and Co-Director are filled by women members of the Association. Drs. Mary Martel and Maryellen Giger have worked diligently to develop an outstanding scient ...
... This is a landmark year for the Annual Meeting for two prominent reasons. For the first time, both the positions of Scientific Program Director and Co-Director are filled by women members of the Association. Drs. Mary Martel and Maryellen Giger have worked diligently to develop an outstanding scient ...
CLASSlCAL RADIATION THERAPY
... Photon fluence emitted by a point source of radiation varies inversely as a square of the distance from the source. Although the clinical source (isotopic source or focal spot) for external beam therapy has a finite size, the source-surface distance is usually chosen to be large (280 cm) so that the ...
... Photon fluence emitted by a point source of radiation varies inversely as a square of the distance from the source. Although the clinical source (isotopic source or focal spot) for external beam therapy has a finite size, the source-surface distance is usually chosen to be large (280 cm) so that the ...
diagnostic imaging equipment industry
... ability, similarities in usage, design, or technical characteristics, and similarities in price movements (U. S. Department of Justice, 1982). ...
... ability, similarities in usage, design, or technical characteristics, and similarities in price movements (U. S. Department of Justice, 1982). ...
12 Physics and Clinical Aspects of Brachytherapy
... rapid falloff of dose away from the sources, brachytherapy allows the delivery of greater tumor doses than external beam radiation therapy, while retaining excellent sparing of neighboring critical organs. Compared with surgery, brachytherapy does not create a tissue deficit, thereby allowing potent ...
... rapid falloff of dose away from the sources, brachytherapy allows the delivery of greater tumor doses than external beam radiation therapy, while retaining excellent sparing of neighboring critical organs. Compared with surgery, brachytherapy does not create a tissue deficit, thereby allowing potent ...
PET/CT Imaging Artifacts - Society of Nuclear Medicine
... single scanning session, allowing excellent fusion of the PET and CT images and thus improving lesion localization and interpretation accuracy. Moreover, the CT data can also be used for attenuation correction, ultimately leading to high patient throughput. These combined advantages have rendered PE ...
... single scanning session, allowing excellent fusion of the PET and CT images and thus improving lesion localization and interpretation accuracy. Moreover, the CT data can also be used for attenuation correction, ultimately leading to high patient throughput. These combined advantages have rendered PE ...
KODAK DIRECTVIEW CR Mammography Feature User`s Guide
... The KODAK DIRECTVIEW CR System with CR Mammography Feature, using CR Mammography Cassettes, provides the means to capture and process mammography images. Insert the CR Mammography Cassettes in the Mammography X-ray Unit's cassette holder for exposure, then place them in the KODAK DIRECTVIEW CR Syste ...
... The KODAK DIRECTVIEW CR System with CR Mammography Feature, using CR Mammography Cassettes, provides the means to capture and process mammography images. Insert the CR Mammography Cassettes in the Mammography X-ray Unit's cassette holder for exposure, then place them in the KODAK DIRECTVIEW CR Syste ...
Diagnostic Reference Levels in Medical Imaging
... newer imaging technologies. This report is intended as a further source of information and guidance on these issues. Some terminology has been clarified. In addition, the report recommends quantities for use as DRLs for various imaging modalities, and provides information on use of DRLs for interven ...
... newer imaging technologies. This report is intended as a further source of information and guidance on these issues. Some terminology has been clarified. In addition, the report recommends quantities for use as DRLs for various imaging modalities, and provides information on use of DRLs for interven ...
Review Article Use of Cone Beam Computed Tomography in
... digital panoramic radiographs range from 5.5 to 22.0 μSv [17], while digital cephalometric radiographs have effective doses of 2.2 to 3.4 μSv [18]. This compares with an average annual effective dose from background radiation in the United States of about 3,000 μSv (3.0 mSv). There are a number of fac ...
... digital panoramic radiographs range from 5.5 to 22.0 μSv [17], while digital cephalometric radiographs have effective doses of 2.2 to 3.4 μSv [18]. This compares with an average annual effective dose from background radiation in the United States of about 3,000 μSv (3.0 mSv). There are a number of fac ...
Avaliação de sistemas de controle automático de
... Figure 1 – The first generation has a pencil beam translation over the patient to reach an attenuation profile, which makes the imaging reconstruction system capable to distinguish different types of tissues and structures. (source: Hypermedia MS[16])................................................. ...
... Figure 1 – The first generation has a pencil beam translation over the patient to reach an attenuation profile, which makes the imaging reconstruction system capable to distinguish different types of tissues and structures. (source: Hypermedia MS[16])................................................. ...
The concept and challenges of TomoTherapy accelerators
... tomotherapy prototype. In 2001, the first clinical unit was completed and in 2002, the first human patient was treated at the University of Wisconsin. We will provide further details on some of the particularities of tomotherapy design, but in short, this treatment unit is basically a CT with an LIN ...
... tomotherapy prototype. In 2001, the first clinical unit was completed and in 2002, the first human patient was treated at the University of Wisconsin. We will provide further details on some of the particularities of tomotherapy design, but in short, this treatment unit is basically a CT with an LIN ...
Computed tomography
... Iodine is the usual contrast dye. Some patients are allergic to iodine and may experience a reaction that may include nausea, breathing difficulty, or other symptoms. The amount of radiation used during a CT procedure is considered minimal; therefore, the risk for radiation exposure is very low. Rad ...
... Iodine is the usual contrast dye. Some patients are allergic to iodine and may experience a reaction that may include nausea, breathing difficulty, or other symptoms. The amount of radiation used during a CT procedure is considered minimal; therefore, the risk for radiation exposure is very low. Rad ...
Public Summary Document - Word 93 KB
... particularly as the patient would receive an increased radiation dose with repeat scans. MSAC suggested deleting ‘hybrid machines’ from the proposed PASC descriptor as inclusion of the term could increase the likelihood of a patient undergoing multiple scans if a the field of view obtainable with hy ...
... particularly as the patient would receive an increased radiation dose with repeat scans. MSAC suggested deleting ‘hybrid machines’ from the proposed PASC descriptor as inclusion of the term could increase the likelihood of a patient undergoing multiple scans if a the field of view obtainable with hy ...
Assessing The Clinical Application Of The Van Herk Margin Formula
... The van Herk margin formula (VHMF) was developed to calculate the minimum margin on the target to provide full coverage by 95% of the prescribed dose to 90% of the population. However, this formula is based on an ideal dose profile model that is not realistic for lung radiotherapy. The purpose of th ...
... The van Herk margin formula (VHMF) was developed to calculate the minimum margin on the target to provide full coverage by 95% of the prescribed dose to 90% of the population. However, this formula is based on an ideal dose profile model that is not realistic for lung radiotherapy. The purpose of th ...
Tumor Dosimetry in a Phase I Study of Lu(177)-DOTA
... (Jaszczak, 2006). A giant leap forward came in 1958 when Hal Anger made the Anger Camera, a scintillation crystal coupled to photomultiplier tubes, making two dimensional detection of radiation and «true imaging» possible. Using another kind of detector, two scientists, Kuhl and Edwards developed ea ...
... (Jaszczak, 2006). A giant leap forward came in 1958 when Hal Anger made the Anger Camera, a scintillation crystal coupled to photomultiplier tubes, making two dimensional detection of radiation and «true imaging» possible. Using another kind of detector, two scientists, Kuhl and Edwards developed ea ...
Backscatter X-ray
Backscatter X-ray is an advanced X-ray imaging technology. Traditional X-ray machines detect hard and soft materials by the variation in transmission through the target. In contrast, backscatter X-ray detects the radiation that reflects from the target. It has potential applications where less-destructive examination is required, and can be used if only one side of the target is available for examination.The technology is one of two types of whole body imaging technologies that have been used to perform full-body scans of airline passengers to detect hidden weapons, tools, liquids, narcotics, currency, and other contraband. A competing technology is millimeter wave scanner. An airport security machine of this type is also referred to as ""body scanner"", ""whole body imager (WBI)"", ""security scanner"", and ""naked scanner"".