ACR–NASCI–SPR Practice Parameter
... patients. Practice Parameters and Technical Standards are not inflexible rules or requirements of practice and are not intended, nor should they be used, to establish a legal standard of care1.For these reasons and those set forth below, the American College of Radiology and our collaborating medica ...
... patients. Practice Parameters and Technical Standards are not inflexible rules or requirements of practice and are not intended, nor should they be used, to establish a legal standard of care1.For these reasons and those set forth below, the American College of Radiology and our collaborating medica ...
Optimal Scanning Protocols for Dual
... artifacts caused by stent struts, and risk of high radiation dose. The latest MDCT systems, such as dual-source computed tomography (DSCT) and dual-energy computed tomography (DECT), are capable of addressing these weaknesses [10]. In particular, DECT has the ability to distinguish different materia ...
... artifacts caused by stent struts, and risk of high radiation dose. The latest MDCT systems, such as dual-source computed tomography (DSCT) and dual-energy computed tomography (DECT), are capable of addressing these weaknesses [10]. In particular, DECT has the ability to distinguish different materia ...
Construction of mouse phantoms from segmented CT
... is to replicate the experimental conditions with materials that are easier to control than the living animal. This concept of mimicking living tissue for radiation biology experiments is well established. Numerous anthropomorphic phantoms, such as the RANDO or ART models made by Alderson Radiation T ...
... is to replicate the experimental conditions with materials that are easier to control than the living animal. This concept of mimicking living tissue for radiation biology experiments is well established. Numerous anthropomorphic phantoms, such as the RANDO or ART models made by Alderson Radiation T ...
Anal Fistula MR - Geisel School of Medicine
... tolerated in symptomatic patients. Endoanal coils ...
... tolerated in symptomatic patients. Endoanal coils ...
Magnetic Resonance Imaging After Total Hip Arthroplasty
... asymptomatic2. The recognition and assessment of osteolysis has relied on the use of routine serial radiographs that are made as part of the follow-up evaluation3-6. It is generally recognized, however, that radiographs either fail to detect lesions or grossly underestimate the extent of bone loss t ...
... asymptomatic2. The recognition and assessment of osteolysis has relied on the use of routine serial radiographs that are made as part of the follow-up evaluation3-6. It is generally recognized, however, that radiographs either fail to detect lesions or grossly underestimate the extent of bone loss t ...
SMU-DDE-Assignments-Scheme of Evaluation PROGRAM Bachelor
... Density: It is the degree of blackness on an x-ray film. It depends primarily on the milliampere second (mAs). When a radiographic film is exposed to x-rays or light it produces some degree of blackening depending on the level of exposure on the film. Density (degree of blackness) increases with the ...
... Density: It is the degree of blackness on an x-ray film. It depends primarily on the milliampere second (mAs). When a radiographic film is exposed to x-rays or light it produces some degree of blackening depending on the level of exposure on the film. Density (degree of blackness) increases with the ...
Breast Microcalcifications - Diagnostic Centers of America
... for pre-stereotactic localization or localization procedure. If discordant needle biopsy results or concerned about sampling error. If image guided percutaneous biopsy not available. May be useful in dense breast to look for mass component in lesion. Physical examination does not play a role in the ...
... for pre-stereotactic localization or localization procedure. If discordant needle biopsy results or concerned about sampling error. If image guided percutaneous biopsy not available. May be useful in dense breast to look for mass component in lesion. Physical examination does not play a role in the ...
Fluoroscopic MR of the Pharynx in Patients with Obstructive Sleep
... subjects also underwent transnasal fiberoptic endoscopy in the supine position while they performed the same respiratory maneuvers as the patients with OSA. The control subjects were defined as healthy if they did not show a narrowing or obstruction during endoscopy. Findings at MR imaging and trans ...
... subjects also underwent transnasal fiberoptic endoscopy in the supine position while they performed the same respiratory maneuvers as the patients with OSA. The control subjects were defined as healthy if they did not show a narrowing or obstruction during endoscopy. Findings at MR imaging and trans ...
DICOM Structured Reporting Overview
... structured data and clinical observations in the imaging environment. • SR objects record observations made for an imagingbased diagnostic or interventional procedure, particularly those that describe or reference images, waveforms, or specific regions of interest. Most important in the stages befor ...
... structured data and clinical observations in the imaging environment. • SR objects record observations made for an imagingbased diagnostic or interventional procedure, particularly those that describe or reference images, waveforms, or specific regions of interest. Most important in the stages befor ...
Flat detectors and their clinical applications
... were demonstrated to be adequate for skeletal radiography [20]. Even much lower doses were shown to be useful for specific purposes such as the control of implants or search for foreign bodies [21]. Figure 8 also shows the response function for a screen-film system. Compared to the flat detector, it ...
... were demonstrated to be adequate for skeletal radiography [20]. Even much lower doses were shown to be useful for specific purposes such as the control of implants or search for foreign bodies [21]. Figure 8 also shows the response function for a screen-film system. Compared to the flat detector, it ...
Magnetic resonance spectroscopic imaging: current status in the
... perpendicular to the craniocaudal axis of the prostate. Images are then acquired covering the entire prostate using a turbo spin echo sequence, with a repetition time (TR) of 2200–5000 ms, an echo time (TE) of 98 ms, field of view of 280, a matrix size 256 × 256 and a slice thickness of 5 mm, with n ...
... perpendicular to the craniocaudal axis of the prostate. Images are then acquired covering the entire prostate using a turbo spin echo sequence, with a repetition time (TR) of 2200–5000 ms, an echo time (TE) of 98 ms, field of view of 280, a matrix size 256 × 256 and a slice thickness of 5 mm, with n ...
The impact of CTA in preoperative planning of deep inferior
... CT angiography and MRI angiography are currently the best methods available to map ...
... CT angiography and MRI angiography are currently the best methods available to map ...
Optical Diagnostics of Mercury Jet for an Intense Proton
... One of the most common optical shadow photography techniques is Schlieren photography, in which a parallel light beam passes through an optically inhomogeneous subject in a homogeneous surrounding medium. A portion of the light beam will deviate by a certain angle at the edge of the inhomogeneous su ...
... One of the most common optical shadow photography techniques is Schlieren photography, in which a parallel light beam passes through an optically inhomogeneous subject in a homogeneous surrounding medium. A portion of the light beam will deviate by a certain angle at the edge of the inhomogeneous su ...
Optical coherence tomography (OCT) of collagen in
... in vivo cross-sectional image of tissues through the use of low-coherence interferometry [7, 10, 19, 20, 30, 35]. OCT imaging was first used clinically by ophthalmologists to collect eye length measurements and has become the clinical standard for a number of eye diseases [8]. OCT has also expanded ...
... in vivo cross-sectional image of tissues through the use of low-coherence interferometry [7, 10, 19, 20, 30, 35]. OCT imaging was first used clinically by ophthalmologists to collect eye length measurements and has become the clinical standard for a number of eye diseases [8]. OCT has also expanded ...
ICRP Publication 105
... on patient dose could be counterproductive to the medical purpose of the procedure. Therefore, source-related individual dose constraints are not relevant. Instead, Diagnostic Reference Levels (DRLs) for a particular procedure, which apply to groups of similar patients rather than individuals, are u ...
... on patient dose could be counterproductive to the medical purpose of the procedure. Therefore, source-related individual dose constraints are not relevant. Instead, Diagnostic Reference Levels (DRLs) for a particular procedure, which apply to groups of similar patients rather than individuals, are u ...
A new automated method for analysis of gated
... surfaces from patients with different shapes than a geometrical model. During the initial development of a new method visual inspection of the epi- and endocardial boundaries produced by the algorithm can be used. Serious mistakes by the algorithm are possible to find from presentations such as thos ...
... surfaces from patients with different shapes than a geometrical model. During the initial development of a new method visual inspection of the epi- and endocardial boundaries produced by the algorithm can be used. Serious mistakes by the algorithm are possible to find from presentations such as thos ...
The Benefits of Moving up to Multislice CT
... Since its introduction in 1972, CT has been an important imaging modality. Recent technological advances have made CT one of the primary diagnostic imaging tools for a wide range of imaging applications. Yet many small hospital radiology departments rely on dated, single-slice scanners or do not pro ...
... Since its introduction in 1972, CT has been an important imaging modality. Recent technological advances have made CT one of the primary diagnostic imaging tools for a wide range of imaging applications. Yet many small hospital radiology departments rely on dated, single-slice scanners or do not pro ...
McClintock-Virtopsy-PI 2011
... • Medical autopsies rates are declining worldwide • Cross-sectional radiology imaging has the potential to transform the traditional medical ...
... • Medical autopsies rates are declining worldwide • Cross-sectional radiology imaging has the potential to transform the traditional medical ...
performance evaluation and quality assurance in digital subtraction
... is one parameter which may be selectable. realize that the active input-phosphor size is almost always less than the manufacturer's stated nominal size, and it should be have electronic measured. It is common for II's to magnification, which changes the active input phosphor size For a fixed display ...
... is one parameter which may be selectable. realize that the active input-phosphor size is almost always less than the manufacturer's stated nominal size, and it should be have electronic measured. It is common for II's to magnification, which changes the active input phosphor size For a fixed display ...
Role of MRI in diagnosis of benign and malignant soft tissue tumours
... bones in children and firmly in adults • Periosteum is low signal on T1WI & T2WI • Reactivation of periosteum in adults – Trauma, infection or neoplasm ...
... bones in children and firmly in adults • Periosteum is low signal on T1WI & T2WI • Reactivation of periosteum in adults – Trauma, infection or neoplasm ...
Policy Statement on Thyroid Shielding During Diagnostic Medical
... The use of CT scans and other diagnostic radiographic procedures has increased dramatically over the last several decades. In 2006, 377 million diagnostic and interventional radiologic examinations and 18 million nuclear medicine examinations were performed, representing a 10fold increase since 1950 ...
... The use of CT scans and other diagnostic radiographic procedures has increased dramatically over the last several decades. In 2006, 377 million diagnostic and interventional radiologic examinations and 18 million nuclear medicine examinations were performed, representing a 10fold increase since 1950 ...
radiation pressure cross section for fluffy aggregates
... The Rayleigh approximation or geometrical optics may be applicable to the calculation of the optical properties, i.e., the asymmetry parameter and the cross sections for particles considerably smaller or larger compared with the wavelength of incident light. When the size of the particle is comparab ...
... The Rayleigh approximation or geometrical optics may be applicable to the calculation of the optical properties, i.e., the asymmetry parameter and the cross sections for particles considerably smaller or larger compared with the wavelength of incident light. When the size of the particle is comparab ...
Positron-Emission Tomography and Assessment of Cancer Therapy
... ositron-emission tomography (PET) is a noninvasive imaging technique that exploits the unique decay physics of positron-emitting isotopes. The isotopes of oxygen, carbon, nitrogen, and fluorine have been used in the development of diagnostically useful biologic compounds that are available for PET i ...
... ositron-emission tomography (PET) is a noninvasive imaging technique that exploits the unique decay physics of positron-emitting isotopes. The isotopes of oxygen, carbon, nitrogen, and fluorine have been used in the development of diagnostically useful biologic compounds that are available for PET i ...