Hemodynamic Modeling in a Stenosed Internal Carotid Artery

Abstract

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 build from a 3D computed tomography angiography image with blood considered as a Newtonian and incompressible fluid, and the wall as rigid. The blood flow modeling is based on the Navier-Stokes equation. A Womersley velocity profile is used as a boundary condition in the common carotid artery. Main results of this study are the following: (1) velocity is maximum in stenosis and minimum in the sinus, (2) pressure is negative on the most of carotid artery bifurcation unless the post-stenotic site.