EANM guidelines for ventilation / perfusion scintigraphy – Part 1
... [36]. This gas has the ideal gamma energy of 193 keV and a half-life of 13 s. The short half-life implies that inhaled 81m Kr disappears from the alveolar space at a much faster rate by decay than by exhalation. When a patient is breathing air with 81mKr at a normal respiratory rate, the regional al ...
... [36]. This gas has the ideal gamma energy of 193 keV and a half-life of 13 s. The short half-life implies that inhaled 81m Kr disappears from the alveolar space at a much faster rate by decay than by exhalation. When a patient is breathing air with 81mKr at a normal respiratory rate, the regional al ...
medical physics international
... Swedish medical physicists in December 1955 and, in September 1956, a written proposal to this effect was sent by Walter Moos (University of Illinois, Chicago, USA) to medical physicists in several countries. Subsequently, in September 1957, HPA President Ray Wood wrote to Walter Moos, Sven Brenner ...
... Swedish medical physicists in December 1955 and, in September 1956, a written proposal to this effect was sent by Walter Moos (University of Illinois, Chicago, USA) to medical physicists in several countries. Subsequently, in September 1957, HPA President Ray Wood wrote to Walter Moos, Sven Brenner ...
X-Ray Imaging and Computed Tomography
... Planar X-ray radiography of overlapping layers of soft tissue or complex bone structures can often be difficult to interpret, even for a skilled radiologist. In these cases, X-ray computed tomography (CT) is used. The basic principles of CT are shown in Figure 1.2. The X-ray source is tightly collim ...
... Planar X-ray radiography of overlapping layers of soft tissue or complex bone structures can often be difficult to interpret, even for a skilled radiologist. In these cases, X-ray computed tomography (CT) is used. The basic principles of CT are shown in Figure 1.2. The X-ray source is tightly collim ...
Evaluation of Parotid Gland Function using Equivalent - J
... Safe imaging modalities are needed for evaluating parotid gland function. The aim of this study was to validate the utility of a magnetic resonance imaging (MRI) tool, equivalent cross-relaxation rate imaging (ECRI), as a measurement of parotid gland function after chemoradiotherapy. Subjects compri ...
... Safe imaging modalities are needed for evaluating parotid gland function. The aim of this study was to validate the utility of a magnetic resonance imaging (MRI) tool, equivalent cross-relaxation rate imaging (ECRI), as a measurement of parotid gland function after chemoradiotherapy. Subjects compri ...
Iodine Concentration and Optimization in Computed
... due to the need to acquire a large amount of high-resolution data over a limited period corresponding to the peak contrast enhancement of the arterial system. Iodine concentration is one of the main determinants of arterial enhancement in CTA, and current low-osmolar and iso-osmolar nonionic CM for ...
... due to the need to acquire a large amount of high-resolution data over a limited period corresponding to the peak contrast enhancement of the arterial system. Iodine concentration is one of the main determinants of arterial enhancement in CTA, and current low-osmolar and iso-osmolar nonionic CM for ...
Detection of Coronary Artery Stenoses by Contrast
... Methods and Results—A total of 64 consecutive patients were studied by MSCT (4⫻1 mm cross-sections, 500-ms rotation, table feed 1.5 mm/rotation, intravenous contrast agent, retrospectively ECG-gated image reconstruction). All coronary arteries and side branches with a luminal diameter ⱖ2.0 mm were a ...
... Methods and Results—A total of 64 consecutive patients were studied by MSCT (4⫻1 mm cross-sections, 500-ms rotation, table feed 1.5 mm/rotation, intravenous contrast agent, retrospectively ECG-gated image reconstruction). All coronary arteries and side branches with a luminal diameter ⱖ2.0 mm were a ...
Cone Beam Computed Tomography (CBCT) Dosimetry
... MC model of the OBI x-ray tube was built into the system and validated by measurements characterizing the cone beam quality in the aspects of the x-ray spectrum, half value layer (HVL) and dose profiles for both full-fan and half-fan modes. Using the validated MC model, CTDICB, dose profile integral ...
... MC model of the OBI x-ray tube was built into the system and validated by measurements characterizing the cone beam quality in the aspects of the x-ray spectrum, half value layer (HVL) and dose profiles for both full-fan and half-fan modes. Using the validated MC model, CTDICB, dose profile integral ...
The Coalescence of the Foramen Lacerum Foramen Lacerum
... Digital subtraction angiography is still the most sensitive diagnostic procedure in the evaluation of intracranial and extracranial vascular lesions such as aneurysms and arteriovenous malformations [4]. However, digital subtraction angiography is expensive, invasive, and brings some associated (1.5 ...
... Digital subtraction angiography is still the most sensitive diagnostic procedure in the evaluation of intracranial and extracranial vascular lesions such as aneurysms and arteriovenous malformations [4]. However, digital subtraction angiography is expensive, invasive, and brings some associated (1.5 ...
2009 Program - Society for Magnetic Resonance
... meeting has spanned the globe from Asia, to Europe, to the USA and Canada as well as the Far East. This wide diversity in locality has been matched with an ever-growing diversity and ingenuity to produce ever-improving clinical and research applications of MR Angiography. The Local Organizing Team i ...
... meeting has spanned the globe from Asia, to Europe, to the USA and Canada as well as the Far East. This wide diversity in locality has been matched with an ever-growing diversity and ingenuity to produce ever-improving clinical and research applications of MR Angiography. The Local Organizing Team i ...
Duration and general contents of training
... and magnetic resonance imaging (MRI) and in some cases radionuclide imaging studies. This role, which is primarily diagnostic, has been expanded into the therapeutic field through various interventional imaging guided techniques, e.g. angioplasty, percutaneous abscess drainage, calculus extraction, ...
... and magnetic resonance imaging (MRI) and in some cases radionuclide imaging studies. This role, which is primarily diagnostic, has been expanded into the therapeutic field through various interventional imaging guided techniques, e.g. angioplasty, percutaneous abscess drainage, calculus extraction, ...
6456-Review - F6 Publishing Home
... oblique scans along the pancreatic duct. Bowel gas can be displaced by moving the transducer and applying compression when necessary. To obtain complete visualization of all the portions of the pancreatic gland it is possible and sometimes convenient to employ different scanning techniques, such as ...
... oblique scans along the pancreatic duct. Bowel gas can be displaced by moving the transducer and applying compression when necessary. To obtain complete visualization of all the portions of the pancreatic gland it is possible and sometimes convenient to employ different scanning techniques, such as ...
RADIATION PROTECTION IN DIAGNOSTIC RADIOLOGY
... in the image • Receptor blur: (screen-film combination) can be as small as 0.1 - 0.15 mm (full width at half maximum of the point response function) with a limiting value as high as 20 cycles per mm • Geometric unsharpness: focal spot size and imaging geometry must be chosen so that the overall unsh ...
... in the image • Receptor blur: (screen-film combination) can be as small as 0.1 - 0.15 mm (full width at half maximum of the point response function) with a limiting value as high as 20 cycles per mm • Geometric unsharpness: focal spot size and imaging geometry must be chosen so that the overall unsh ...
19. Optimization of protection in mammography - RPOP
... in the image • Receptor blur: (screen-film combination) can be as small as 0.1 - 0.15 mm (full width at half maximum of the point response function) with a limiting value as high as 20 cycles per mm • Geometric unsharpness: focal spot size and imaging geometry must be chosen so that the overall unsh ...
... in the image • Receptor blur: (screen-film combination) can be as small as 0.1 - 0.15 mm (full width at half maximum of the point response function) with a limiting value as high as 20 cycles per mm • Geometric unsharpness: focal spot size and imaging geometry must be chosen so that the overall unsh ...
Ms - F6 Publishing Home
... A hypoechoic mass, dilatation of the pancreatic duct, and dilatation of the bile duct are typical imaging features of pancreatic head tumor when seen on US. However, in cases of pancreatic body and tail cancers, tumor detection is quite difficult due to the lack of biliary dilatation and the presenc ...
... A hypoechoic mass, dilatation of the pancreatic duct, and dilatation of the bile duct are typical imaging features of pancreatic head tumor when seen on US. However, in cases of pancreatic body and tail cancers, tumor detection is quite difficult due to the lack of biliary dilatation and the presenc ...
- Wiley Online Library
... species, positioning, body parts, and owner (called responsible party). Currently, many veterinarians have limited understanding of DICOM. This is because most DICOM introductory material has been written either for the engineer and is highly technical or for the hospital administrator and is rather ...
... species, positioning, body parts, and owner (called responsible party). Currently, many veterinarians have limited understanding of DICOM. This is because most DICOM introductory material has been written either for the engineer and is highly technical or for the hospital administrator and is rather ...
1 Imaging for Clinical Trials at Vanderbilt University Medical Center
... Collaboration with VUMC Finance/CTBC regarding exams that will eventually be listed on the Clinical Trials Radiology Order. Loading any special (i.e., non-standard of care) imaging protocols onto scanners. In the absence of study-specific image acquisition guidelines, scanning protocols will default ...
... Collaboration with VUMC Finance/CTBC regarding exams that will eventually be listed on the Clinical Trials Radiology Order. Loading any special (i.e., non-standard of care) imaging protocols onto scanners. In the absence of study-specific image acquisition guidelines, scanning protocols will default ...
To evaluate the efficacy of MRI in detection of cartilage invasion and
... A radiologist in his perspective and capacity has a significant role in the treatmentplanning by accurately diagnosing and staging the cancer, with special focus on evaluating the deeper tissues i.e., cartilage and submucosal space involvement, which the clinician is not able to evaluate endoscopica ...
... A radiologist in his perspective and capacity has a significant role in the treatmentplanning by accurately diagnosing and staging the cancer, with special focus on evaluating the deeper tissues i.e., cartilage and submucosal space involvement, which the clinician is not able to evaluate endoscopica ...
draft template - American College of Radiology
... an approach that differs from the guidelines, standing alone, does not necessarily imply that the approach was below the standard of care. To the contrary, a conscientious practitioner may responsibly adopt a course of action different from that set forth in the guidelines when, in the reasonable ju ...
... an approach that differs from the guidelines, standing alone, does not necessarily imply that the approach was below the standard of care. To the contrary, a conscientious practitioner may responsibly adopt a course of action different from that set forth in the guidelines when, in the reasonable ju ...
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.