Results 91 to 100 of about 6,942,219 (182)
Frontiers in MedicinePurposeThis study aimed to evaluate the differences between pericoronary adipose tissue (PCAT) attenuation at different measured locations in evaluating coronary atherosclerosis using spectral computed tomography (CT) and to explore valuable imaging ...
Yulin Jia +5 more
doaj +1 more source
TomographyBackground: Differentiating adrenal adenomas from non-adenomatous lesions remains a critical challenge in the management of adrenal incidentalomas. Conventional unenhanced CT relies on attenuation thresholds of 10 HU and 20 HU, which present trade-offs ...
Tommasa Catania +12 more
doaj +1 more source
, 2017 PURPOSE: To evaluate the image quality of 70-keV virtual monoenergetic (monoE) abdominal CT images compared to 120-kVp polychromatic images generated from a spectral detector CT (SDCT) scanner. METHODS: This prospective study included generation of a 120-
Dhanantwari, Amar +9 more
core +1 more source
3D Panoramic Imaging for Virtual Environment Construction [PDF]
The project is concerned with the development of algorithms for the creation of photo-realistic 3D virtual environments, overcoming problems in mosaicing, colour and lighting changes, correspondence search speed and correspondence errors due to lack of ...
Gledhill, Duke
core +4 more sources
Research Progress on Reducing Metal Artifacts in CT Imaging
CT Lilun yu yingyong yanjiuIntracranial aneurysm embolization, oral metal implants, spinal internal fixation, hip replacement, and other metal implants are increasingly used in clinical practice. Metal artifacts generated by computed tomography (CT) images during the evaluation of
Danyang SU +5 more
doaj +1 more source
Supplemental Material for imaging of hypodense gliotic lesions in photon counting computed tomography using virtual monoenergetic images by Denise Schoenbeck, Alexander Sacha, Julius Henning Niehoff, Christoph Moenninghoff, Jan Borggrefe, Jan Robert ...
Jan Robert Kroeger (5316179) +6 more
core +1 more source
Understanding Photon-Counting CT: Physics, Detector Technology, and Image Reconstructions
SensorsPhoton-counting computed tomography (PCCT) represents a detector-level transformation in CT imaging. Unlike conventional energy-integrating detectors, photon-counting detectors directly convert individual X-ray interactions into electrical pulses and ...
Arosh Shavinda Perera Molligoda Arachchige +1 more
doaj +1 more source
The value of dual-energy computed tomography angiography-based virtual monoenergetic imaging for evaluations after cerebral aneurysm clipping [PDF]
PURPOSE: This study aimed to research the optimal energy range of dual-energy computed tomography angiography (DECTA)-based virtual monoenergetic imaging (VMI) for evaluations after cerebral aneurysm clipping. METHODS: Sixty patients who underwent DECTA
Feijian Wu +5 more
core +1 more source
, 2022 Coronary computed tomography angiography (CCTA) is a technique that allows for a non-invasive evaluation of anatomy, structure and function of the heart, as well and of coronary arterial patency. It consists of a contrast-enhanced computed tomography of the thorax, which is synchronized with the patient's electrocardiographic activity that permits to ...
openaire +1 more source
Frontiers in Cardiovascular MedicinePurposeTo evaluate the feasibility and accuracy of quantification of calcified coronary stenoses using virtual non-calcium (VNCa) images in coronary CT angiography (CCTA) with photon-counting detector (PCD) CT compared with quantitative coronary ...
Victor Mergen +13 more
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