Contrast medium administration and image acquisition parameters
... the feasibility and benefit of individually customized contrast protocols based on additional factors beyond weight, such as procedure information, patient characteristics, and data from test-bolus injections, allowing individualization of scan delay computation. These volume calculations were much ...
... the feasibility and benefit of individually customized contrast protocols based on additional factors beyond weight, such as procedure information, patient characteristics, and data from test-bolus injections, allowing individualization of scan delay computation. These volume calculations were much ...
The clinical role of magnetic resonance in cardiovascular disease
... an echo. An advantage of this sequence is images of the same plane can be acquired at multiple points of the cardiac cycle, producing a cine acquisition. Because this sequence can be very short, moving blood gives a high signal and appears white unless it is turbulent, when signal may be lost. Conve ...
... an echo. An advantage of this sequence is images of the same plane can be acquired at multiple points of the cardiac cycle, producing a cine acquisition. Because this sequence can be very short, moving blood gives a high signal and appears white unless it is turbulent, when signal may be lost. Conve ...
Dental Regulatory Guide - Minnesota Department of Health
... Assessing the need for individual monitoring ...
... Assessing the need for individual monitoring ...
Roles of Nuclear Cardiology, Cardiac Computed Tomography, and
... In contrast, stress nuclear cardiology techniques (as with all stress imaging methods) require the presence of a hemodynamically significant lesion, either fixed or dynamic, before an abnormality becomes evident. In the above study (22), without the CCS, stress myocardial perfusion SPECT (MPS) provi ...
... In contrast, stress nuclear cardiology techniques (as with all stress imaging methods) require the presence of a hemodynamically significant lesion, either fixed or dynamic, before an abnormality becomes evident. In the above study (22), without the CCS, stress myocardial perfusion SPECT (MPS) provi ...
Magnetic Resonance Curriculum
... magnetic resonance (MR) technology. This document represents a collaborative effort involving representatives from the American Society of Radiologic Technologists (ASRT), the Association of Educators in Imaging and Radiologic Sciences (AEIRS) and the Section for Magnetic Resonance Technologists (SM ...
... magnetic resonance (MR) technology. This document represents a collaborative effort involving representatives from the American Society of Radiologic Technologists (ASRT), the Association of Educators in Imaging and Radiologic Sciences (AEIRS) and the Section for Magnetic Resonance Technologists (SM ...
A Monte Carlo based three-dimensional dose reconstruction
... workload compared to placing conventional dosimeters, energy fluence detectors, or films. There are several possibilities to use EPIDs for pretreatment verification. The forward approach1,2,6,12–14 predicts the dose or the measured grayscale value at the portal imager based on the planned beams. Thi ...
... workload compared to placing conventional dosimeters, energy fluence detectors, or films. There are several possibilities to use EPIDs for pretreatment verification. The forward approach1,2,6,12–14 predicts the dose or the measured grayscale value at the portal imager based on the planned beams. Thi ...
A literature review of electronic portal imaging for
... either before or during treatment. Devices such as point detectors, film and gel have been widely reported. More detailed information about the various systems used for verification of IMRT can be found elsewhere, e.g. [6,7]. Like EPIDs, various matrix detectors have been produced for measuring ener ...
... either before or during treatment. Devices such as point detectors, film and gel have been widely reported. More detailed information about the various systems used for verification of IMRT can be found elsewhere, e.g. [6,7]. Like EPIDs, various matrix detectors have been produced for measuring ener ...
Cone beam computed tomography and other imaging techniques in
... higher patient dose limits the use to select cases after a risk-benefit calculation has been performed. The field of view has become more suitable for the head and neck region, but it is not possible to restrict it to small regions such as quadrants of a patient. Metal and movement artifacts can pos ...
... higher patient dose limits the use to select cases after a risk-benefit calculation has been performed. The field of view has become more suitable for the head and neck region, but it is not possible to restrict it to small regions such as quadrants of a patient. Metal and movement artifacts can pos ...
Venous malformations
... -Following aspiration, doxycycline mixed with contrast were injected into the lymphatic malformation. ...
... -Following aspiration, doxycycline mixed with contrast were injected into the lymphatic malformation. ...
Reducing Radiation Dose to the Female Breast During
... spend valuable time discussing ideas, concepts, results, and questions this work would not have been possible. For their constant consultancy along the way, especially their helpful responses to so many questions regarding Monte Carlo simulations and image quality metrics, I thank my friends and men ...
... spend valuable time discussing ideas, concepts, results, and questions this work would not have been possible. For their constant consultancy along the way, especially their helpful responses to so many questions regarding Monte Carlo simulations and image quality metrics, I thank my friends and men ...
Soft-Tissue Tumors and Tumorlike Lesions
... they are not included in the WHO classification of soft-tissue tumors. However, ganglia are common and should be considered in the work-up of a soft-tissue mass. Ganglia commonly occur in the hand, wrist, and feet (20) and can arise from joint capsules, bursae, ligaments, tendons, and subchondral bo ...
... they are not included in the WHO classification of soft-tissue tumors. However, ganglia are common and should be considered in the work-up of a soft-tissue mass. Ganglia commonly occur in the hand, wrist, and feet (20) and can arise from joint capsules, bursae, ligaments, tendons, and subchondral bo ...
chapter 221. x-rays in the healing arts general provisions
... Half-value layer (HVL)— (i) The thickness of specified material which attenuates the exposure rate by 1/2 when introduced into the path of a given beam of radiation. In this definition, the contribution of all scattered radiation, other than any which might be present initially in the beam concerned ...
... Half-value layer (HVL)— (i) The thickness of specified material which attenuates the exposure rate by 1/2 when introduced into the path of a given beam of radiation. In this definition, the contribution of all scattered radiation, other than any which might be present initially in the beam concerned ...
Toward simultaneous PET/MR breast imaging: Systematic
... and may increase the diagnostic accuracy compared to single modalities.1–3 Various diagnostic imaging applications can potentially benefit from combined PET/MR hybrid imaging. In this purview, a potentially attractive new diagnostic application is PET/MR breast imaging combining the high sensitivity ...
... and may increase the diagnostic accuracy compared to single modalities.1–3 Various diagnostic imaging applications can potentially benefit from combined PET/MR hybrid imaging. In this purview, a potentially attractive new diagnostic application is PET/MR breast imaging combining the high sensitivity ...
Thyroid and Parathyroid Ultrasound Examination
... The clinical aspects contained in specific sections of this parameter (Introduction, Indications, Specifications of the Examination, and Equipment Specifications) were revised collaboratively by the American Institute of Ultrasound in Medicine (AIUM), the American College of Radiology (ACR), the Soc ...
... The clinical aspects contained in specific sections of this parameter (Introduction, Indications, Specifications of the Examination, and Equipment Specifications) were revised collaboratively by the American Institute of Ultrasound in Medicine (AIUM), the American College of Radiology (ACR), the Soc ...
Emission Imaging - EECS @ Michigan
... some time instant, say t0 , after the onset of injection, these N tracer atoms are located in various distinct positions ~ 1 (t0 ), X ~ 2 (t0 ), . . . , X ~ N (t0 ), where X ~ k (t) is the three-tuple describing the within the body. Denote these positions X spatial location (with respect to some fix ...
... some time instant, say t0 , after the onset of injection, these N tracer atoms are located in various distinct positions ~ 1 (t0 ), X ~ 2 (t0 ), . . . , X ~ N (t0 ), where X ~ k (t) is the three-tuple describing the within the body. Denote these positions X spatial location (with respect to some fix ...
Imaging the posterior mediastinum: a multimodality approach
... he posterior mediastinum is the anatomical region bordered superiorly by the thoracic inlet, inferiorly by the diaphragm, anteriorly by the pericardium and the great mediastinal vessels, posteriorly by the anterior longitudinal ligament, and laterally by the right and left parietal pleura folds (1). ...
... he posterior mediastinum is the anatomical region bordered superiorly by the thoracic inlet, inferiorly by the diaphragm, anteriorly by the pericardium and the great mediastinal vessels, posteriorly by the anterior longitudinal ligament, and laterally by the right and left parietal pleura folds (1). ...
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.