Iterative model reconstruction - Medical Physics International Journal
... various vendors, their clinical value varies dramatically. There is continued debate in the scientific community with regard to the optimal implementation. Classification of reconstruction techniques based on their clinical results as well as objective phantom-based measurements provides a logical — ...
... various vendors, their clinical value varies dramatically. There is continued debate in the scientific community with regard to the optimal implementation. Classification of reconstruction techniques based on their clinical results as well as objective phantom-based measurements provides a logical — ...
The Radiation Protection Implications of the Use of Cone Beam
... advice on many aspects of the installation, they are unlikely to be RPAs and so cannot give the necessary formal advice regarding the radiation protection suitability of a proposed installation. This must always be obtained through formal consultation with the practice’s RPA. The equipment supplier ...
... advice on many aspects of the installation, they are unlikely to be RPAs and so cannot give the necessary formal advice regarding the radiation protection suitability of a proposed installation. This must always be obtained through formal consultation with the practice’s RPA. The equipment supplier ...
Abdo-Man: A 3D Printed Anthropomorphic Phantom for Validating
... densities and attenuation coefficients to tissue. The material for the lesions should also be transparent ...
... densities and attenuation coefficients to tissue. The material for the lesions should also be transparent ...
AAPM REPORT NO. 54 STEREOTACTIC RADIOSURGERY Report
... rate for SRS is such that the dose is typically delivered in less than one hour from the start of treatment, unlike low-dose-rate brachytherapy, which is typically administered over several days. It is imperative therefore that a thorough and methodical quality assurance program for SRS be developed ...
... rate for SRS is such that the dose is typically delivered in less than one hour from the start of treatment, unlike low-dose-rate brachytherapy, which is typically administered over several days. It is imperative therefore that a thorough and methodical quality assurance program for SRS be developed ...
Chapter 7 Diagnostic Imaging of Horses
... imaging modalities used for small animals are also possible in large animals, though they may be limited in usefulness and availability because of the larger size of the animal. The limitations are usually related to an inability of the equipment to accommodate the size of the large animal patient o ...
... imaging modalities used for small animals are also possible in large animals, though they may be limited in usefulness and availability because of the larger size of the animal. The limitations are usually related to an inability of the equipment to accommodate the size of the large animal patient o ...
Fall 2007 PDF 5MB
... Density imaging, Cube captures the entire volume with high spatial, isotropic resolution. As a result, any view, plane or slice can be later reconstructed from a single acquisition with the same high resolution as the native plane. This new ability for volumetric imaging of the anatomy can result in ...
... Density imaging, Cube captures the entire volume with high spatial, isotropic resolution. As a result, any view, plane or slice can be later reconstructed from a single acquisition with the same high resolution as the native plane. This new ability for volumetric imaging of the anatomy can result in ...
Radiation exposure and thyroid cancer: a review
... (3,14). The prevalence of hypothyroidism, thyroid nodules, and thyroid carcinoma in exposed subjects increased with the radiation dose to the thyroid gland. Females were at a higher risk (3.7 fold) of developing a thyroid nodule than males, and the risk decreased with increasing age at exposure. In ...
... (3,14). The prevalence of hypothyroidism, thyroid nodules, and thyroid carcinoma in exposed subjects increased with the radiation dose to the thyroid gland. Females were at a higher risk (3.7 fold) of developing a thyroid nodule than males, and the risk decreased with increasing age at exposure. In ...
Abdominal Aorta, Renal Arteries and Run
... MIP (a) reconstruction shows right renal artery stenosis and poststenotic dilation of the artery, which also presents early bifurcation. DSA, performed subsequently, confirmed the tight stenotic lesion (b) and allowed treatment maneuvers (c) ...
... MIP (a) reconstruction shows right renal artery stenosis and poststenotic dilation of the artery, which also presents early bifurcation. DSA, performed subsequently, confirmed the tight stenotic lesion (b) and allowed treatment maneuvers (c) ...
Post Graduate Radiology Course Breast Imaging and Interventions
... current trends optimizing your breast imaging program. Also included will be MR and digital breast tomosynthesis case reviews. ...
... current trends optimizing your breast imaging program. Also included will be MR and digital breast tomosynthesis case reviews. ...
Cone beam computed tomography: Adding three dimensions to
... used in an attempt to reduce the radiation exposure.[3] CBCT image artifacts are attributed to the following four sources: The patient, the scanner, artifacts specific to CBCT system (partial volume averaging, undersampling, and cone beam effect) and finally X-ray beam artifacts.[15] The cone beam eff ...
... used in an attempt to reduce the radiation exposure.[3] CBCT image artifacts are attributed to the following four sources: The patient, the scanner, artifacts specific to CBCT system (partial volume averaging, undersampling, and cone beam effect) and finally X-ray beam artifacts.[15] The cone beam eff ...
Department of Radiology-Annual Executive Summary Report
... was selected to participate in the International Visiting Professor Program sponsored by the RSNA. Dr. Levon Nazarian continues to serve as editor of the Journal of Ultrasound in Medicine and also received both the 2013 Robert H. Condon, MD Teaching Award given by the Physical Medicine and Rehabilit ...
... was selected to participate in the International Visiting Professor Program sponsored by the RSNA. Dr. Levon Nazarian continues to serve as editor of the Journal of Ultrasound in Medicine and also received both the 2013 Robert H. Condon, MD Teaching Award given by the Physical Medicine and Rehabilit ...
(MRI) of the Soft - American College of Radiology
... Contrast enhancement is often critical for detecting tumor extent. Rapid T1-weighted (T1-W) gradient-echo images should be obtained pre- and post-dynamic intravenous bolus administration of a gadolinium chelate contrast material to highlight sites of disease. Images obtained during the arterial and ...
... Contrast enhancement is often critical for detecting tumor extent. Rapid T1-weighted (T1-W) gradient-echo images should be obtained pre- and post-dynamic intravenous bolus administration of a gadolinium chelate contrast material to highlight sites of disease. Images obtained during the arterial and ...
1 E. Mark Haacke, Ph.D. Professor of Radiology and Professor and
... of MRI using superconducting systems, it was an undiscovered country, and I was lucky enough to be one of the early explorers. During the last 30 years, I have focused on the vasculature of the human body. During the 1980s, I developed MR angiographic methods and in the mid 1990s. I developed the me ...
... of MRI using superconducting systems, it was an undiscovered country, and I was lucky enough to be one of the early explorers. During the last 30 years, I have focused on the vasculature of the human body. During the 1980s, I developed MR angiographic methods and in the mid 1990s. I developed the me ...
Estimation of coronary flow reserve: Can SPECT compete with other
... estimates by an established technique is needed before considering this approach for clinical use. The authors also found that the MBFIR decreased according to the heart rate at rest. Others have pointed this out as a limitation to obtaining an accurate measure of CFR.34 Another approach to calculat ...
... estimates by an established technique is needed before considering this approach for clinical use. The authors also found that the MBFIR decreased according to the heart rate at rest. Others have pointed this out as a limitation to obtaining an accurate measure of CFR.34 Another approach to calculat ...
Document
... the central-slice theorem of x-ray CT Heterogeneous media are treated as (we hope) small perturbations of a homogeneous medium, to which an assumption such as the Born approximation or Rytov approximation can be applied BMI I FS05 – Class 9 “Ultrasound Imaging” Slide 19 ...
... the central-slice theorem of x-ray CT Heterogeneous media are treated as (we hope) small perturbations of a homogeneous medium, to which an assumption such as the Born approximation or Rytov approximation can be applied BMI I FS05 – Class 9 “Ultrasound Imaging” Slide 19 ...
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.