Results 11 to 20 of about 1,629,554 (304)
Spectral CT: Current Liver Applications
Diagnostics, 2023 Using two different energy levels, dual-energy computed tomography (DECT) allows for material differentiation, improves image quality and iodine conspicuity, and allows researchers the opportunity to determine iodine contrast and radiation dose reduction.
Ana P. Borges +2 more
doaj +4 more sources
Spectral detector CT for cardiovascular applications [PDF]
Diagnostic and Interventional Radiology, 2017 Spectral detector computed tomography (SDCT) is a novel technology that uses two layers of detectors to simultaneously collect low and high energy data.
Prabhakar Rajiah +2 more
doaj +3 more sources
Successful Whole-Body Spectral CT with Intra-Osseous Iodine Injection
Journal of the Belgian Society of Radiology, 2020 Teaching point: Intra-osseous access for contrast medium injection represents an alternative route for emergency CT in patients with compromised venous access.
Adrienne Coche +2 more
doaj +1 more source
Spectral CT Reconstruction With Image Sparsity and Spectral Mean [PDF]
IEEE Transactions on Computational Imaging, 2016 Photon-counting detectors can acquire x-ray intensity data in different energy bins. The signal to noise ratio of resultant raw data in each energy bin is generally low due to the narrow bin width and quantum noise. To address this problem, here we propose an image reconstruction approach for spectral CT to simultaneously reconstructs x-ray attenuation
Yi Zhang 0018 +5 more
openaire +2 more sources
Deep learning based spectral CT imaging [PDF]
Neural Networks, 2021 Spectral computed tomography (CT) has attracted much attention in radiation dose reduction, metal artifacts removal, tissue quantification and material discrimination. The x-ray energy spectrum is divided into several bins, each energy-bin-specific projection has a low signal-noise-ratio (SNR) than the current-integrating counterpart, which makes image
Weiwen Wu +9 more
openaire +4 more sources
CT Lilun yu yingyong yanjiu, 2023 Objective: To investigate the value of spectral CT in differential central lung cancer from obstructive atelectasis for achieving the accurate delineation and radiotherapy localiation.
Xiuli LIU +5 more
doaj +1 more source
Spectral performance evaluation of a second-generation spectral detector CT
Journal of Applied Clinical Medical Physics, 2022 Abstract Objective To characterize a second-generation wide-detector dual-layer spectral computed tomography system for material quantification accuracy, acquisition parameter and patient size dependencies, and tissue characterization capabilities ...
Leening P. Liu +9 more
openaire +2 more sources
Frontiers in Molecular Biosciences, 2023 Gastrointestinal (GI) cancer is the leading cause of cancer-related deaths worldwide. Computed tomography (CT) is an important auxiliary tool for the diagnosis, evaluation, and prognosis prediction of gastrointestinal tumors. Spectral CT is another major
Yuqin Hong +6 more
doaj +1 more source
Temporal and spectral imaging with micro‐CT [PDF]
Medical Physics, 2012 Purpose:Micro‐CT is widely used for small animal imaging in preclinical studies of cardiopulmonary disease, but further development is needed to improve spatial resolution, temporal resolution, and material contrast. We present a technique for visualizing the changing distribution of iodine in the cardiac cycle with dual source micro‐CT.Methods:The ...
Samuel M, Johnston +2 more
openaire +2 more sources
Study on Spectral Interference in the Determination of Vanadium by ICP-OES
, 2020 Vanadium is an important scarce resource and strategic metal, and often coexists with a variety of complex metals in the form of secondary mineral phases in nature.
Zhang Yi +7 more
core +1 more source