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RISComputational Modeling and Analysis of Murmurs Generated by Modeled Aortic Stenoses
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this study, coupled hemodynamic–acoustic simulations are employed to study the generation and propagation of murmurs associated with aortic stenoses where the aorta with a stenosed aortic valve is modeled as a curved ...
Computational Modeling and Analysis of Murmurs Generated by Modeled Aortic Stenoses
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: In this study, coupled hemodynamic–acoustic simulations are employed to study the generation and propagation of murmurs associated with aortic stenoses where the aorta with a stenosed aortic valve is modeled as a curved ...
Computational Modeling of Aortic Stenosis With a Reduced Degree-of-Freedom Fluid-Structure Interaction Valve Model
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this study, a novel reduced degree-of-freedom (rDOF) aortic valve model is employed to investigate the fluid-structure interaction (FSI) and hemodynamics associated with aortic stenosis. The dynamics of the valve leaflets ...
Quantifying the Effect of Body Habitus on Cardiac Auscultation Via Computational Hemoacoustics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The effect of body habitus on auscultation of heart murmurs is investigated via computational hemoacoustic modeling. The source of the heart murmur is first obtained from a hemodynamic simulation of blood flow through a ...
Modeling the Effect of Sleeve Gastrectomy on Gastric Digestion in Stomach: Insights From Multiphase Flow Modeling
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The geometry and motility of the stomach play a critical role in the digestion of ingested liquid meals. Sleeve gastrectomy, a common type of bariatric surgery used to reduce the size of the stomach, significantly alters ...
A Computational Method for Analyzing the Biomechanics of Arterial Bruits
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A computational framework consisting of a one-way coupled hemodynamic–acoustic method and a wave-decomposition based postprocessing approach is developed to investigate the biomechanics of arterial bruits. This framework ...
Freeman Scholar Lecture (2021)—Sharp-Interface Immersed Boundary Methods in Fluid Dynamics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Immersed boundary methods (IBMs) have evolved over the past 50 years from a specialized technique in biofluid dynamics and applied mathematics to a cornerstone of computational fluid dynamics. Many recent advancements in ...
Computational Study on the Effects of Valve Orientation on the Hemodynamics and Leaflet Dynamics of Bioprosthetic Pulmonary Valves
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Pulmonary valves do not display a fibrous annulus as do other valves in the heart; thus, pulmonary valves can be implanted at multiple orientations and locations within the right ventricular outflow tract (RVOT). This gives ...
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 ...