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This paper deals with patient-specific blood flow modeling in a stenosed internal carotid artery (ICA). An ICA stenosis has an impact on hemodynamic behavior. It can hamper the brain irrigation and even cause a stroke. Our aim is to predict the blood flow behavior through computational fluid dynamic (CFD) study. The proposed approach realizes a hemodynamic modeling within a geometric carotid model...
Atherosclerosis is the third leading cause of morbidity and mortality in the Western world. Low and oscillating wall shear stress (WSS) regions have been previously reported as parameters that correlate with the development of atherosclerosis. In this study we investigated geometric and hemodynamic changes in the carotid bifurcation as a result of posture change. Data from magnetic resonance imaging...
While recent advances in percutaneous coronary interventions, treatment of coronary bifurcation lesions is a challenging area. For increasing the success rate of complicated angioplasty and minimizing complication, micro-robot angioplasty which has the benefits of precision and miniaturization is emerging as one of treatment modalities. Atherosclerosis might be affected by the vascular geometry such...
The carotid artery bifurcation is a common site of atherosclerosis which is a major leading cause of ischemic stroke. The impact of stenosis in the atherosclerotic carotid artery is to disturb the flow pattern and produce regions with high shear rate, turbulence, and recirculation, which are key hemodynamic factors associated with plaque rupture, clot formation, and embolism. In order to characterize...
A three-dimensional model with simplified geometry for the branched coronary artery is presented. The bifurcation is defined by an analytical intersection of two cylindrical tubes lying on a sphere that represents an idealized heart surface. The model takes into account the repetitive variation of curvature and motion to which the vessel is subject during each cardiac cycle, and also includes the...
The role of geometric and fluid-dynamic parameters in atherogenesis is investigated by numerical solution of the relevant steady laminar flow equations, i.e. a finite-element solution of the steady-state 2-D and 3-D Navier-Stokes equations. The flow geometry representing an aortic bifurcation is a two-dimensional symmetric branching channel with and without stenosis. Since carotid flow also remains...
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