Results 11 to 20 of about 328,836 (254)
Evaluation of Posture-Dependent Signal Intensity and Contrast Alterations in Low-Field Brain Magnetic Resonance Imaging [PDF]
DiagnosticsBackground/Objectives: Most brain magnetic resonance imaging (MRI) is performed in supine position, although posture may influence cerebrovascular signal characteristics through gravity-related physiological changes.
Chang-Soo Yun +7 more
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The Application of Contrast-Enhanced 3D-STIR-VISTA MR Imaging of the Brachial Plexus
Journal of the Belgian Society of Radiology, 2022 Objective: To introduce contrast-enhanced 3D-STIR-VISTA sequence that would improve the image quality for the brachial plexus imaging and enhance the contrast between the brachial plexus and surrounding tissues.
Dingsheng Han +3 more
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Contrast‐to‐noise ratios of diffusion anisotropy indices [PDF]
Magnetic Resonance in Medicine, 2005 AbstractThe degree of diffusion anisotropy in different brain regions is usually measured by a diffusion anisotropy index (DAI) such as relative anisotropy (RA) and fractional anisotropy (FA). FA has been reported to have a higher contrast‐to‐noise ratio (CNR) than RA. The present work compares the CNRs of seven DAIs in theoretical propagation‐of‐error
Peter B, Kingsley, W Gordon, Monahan
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Control of Healthcare-Associated Infections using Silver Nanoparticles in Radiology
Journal of Medical Physics, 2022 Aims: The control of healthcare-associated infections (HCAIs) is a significant concern in the field of radiology due to multiple contact-transmitted pathogens on imaging devices.
Gyunheung Ahn, Sungchul Kim
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Contrast‐to‐noise ratio (CNR) as a quality parameter in fMRI [PDF]
Journal of Magnetic Resonance Imaging, 2007 AbstractPurposeTo evaluate the impact of data quality on the localization of brain activation in functional magnetic resonance imaging (fMRI) and to explore whether the temporal contrast‐to‐noise‐ratio (CNR) provides a quantitative parameter to estimate fMRI quality.Materials and MethodsWe investigated two methods for defining the CNR by comparing them
Geissler, Alexander +5 more
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Journal of Medical Physics, 2021 In medical X-ray imaging, to perform optimal operations, it is essential for the user to understand whether a required image quality level which depends on a diagnostic task can be achieved with the imaging system used.
Sho Maruyama
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Frontiers in Biomedical Technologies, 2022 Purpose: Gold Nanoparticles (GNPs) with high density and an atomic number have lately been proposed as an alternative contrast agent for Computed Tomography (CT).
Sara Khademi +2 more
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A study on correlation between thyroid CT radiation dose, image quality and female body composition [PDF]
Zhongguo aizheng zazhiBackground and purpose: With the increasing use of medical imaging examinations, Computed tomography (CT) scans have become one of the primary sources of effective dose.
Xigang SHEN +3 more
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مجلة بغداد للعلوم, 2023 Examining and comparing the image quality of degenerative cervical spine diseases through the application of three MRI sequences; the Two-Dimension T2 Weighed Turbo Spin Echo (2D T2W TSE), the Three-Dimension T2 Weighted Turbo Spin Echo (3D T2W TSE ...
Nabaa A. Rasheed Naji
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Diagnostics, 2023 Purpose: The novel photon-counting detector (PCD) technique acquires spectral data for virtual monoenergetic imaging (VMI) in every examination. The aim of this study was the evaluation of the impact of VMI of abdominal arterial vessels on quantitative ...
Daniel Dillinger +8 more
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