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RISComputational Study of Computed Tomography Contrast Gradients in Models of Stenosed Coronary Arteries
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Recent computed tomography coronary angiography (CCTA) studies have noted higher transluminal contrast agent gradients in arteries with stenotic lesions, but the physical mechanism responsible for these gradients is not ...
Flow Dynamics in the Aortic Arch and Its Effect on the Arterial Input Function in Cardiac Computed Tomography
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: The arterial input function (AIF)—time-density curve (TDC) of contrast at the coronary ostia—plays a central role in contrast enhanced computed tomography angiography (CTA). This study employs computational modeling in a ...
A Noninvasive Assessment of Flow Based on Contrast Dispersion in Computed Tomography Angiography: A Computational and Experimental Phantom Study
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Transluminal attenuation gradient (TAG), defined as the gradient of the contrast agent attenuation drop along the vessel, is an imaging biomarker that indicates stenosis in the coronary arteries. The transluminal attenuation ...