A Comparative Study Based on Patient-Specific Fluid-Structure Interaction Modeling of Cerebral Aneurysms

Abstract

The Team for Advanced Flow Simulation and Modeling (T*AFSM) at Rice University has been developing techniques to address the computational challenges involved in fluid-structure interaction (FSI) modeling. The Stabilized Space-Time FSI (SSTFSI) core technologies, in conjunction with an array of special techniques, is used in a comparative study of patient-specific cerebral aneurysms. Ten cases, from three different locations, are studied, half of which were ruptured. The study compares the wall shear stress, oscillatory shear index, and the arterial-wall stress and stretch, with the original motivation of finding significant differences between ruptured and unruptured aneurysms. Simpler approaches to computer modeling of cerebral aneurysms are also compared to FSI modeling.