Fluid-structure interaction simulation framework for cerebral aneurysm wall deformation

Abstract

In recent years, fluid-structure interaction (FSI) methods are increasingly used for expanding our knowledge of blood flow’s characteristics and inherent tendencies as well as their impact on the morphological alterations of vessel wall tissues. The current study attempts to provide a simulation framework and a visualization tool which will fuel the potential to model deformations of the cerebral aneurysm vessel wall and identify intense wall displacements, highlighting regions with an increased possibility of rupture. The fluid-structure interaction method modelled by our approach is a two-step iterative process comprised of a fluid dynamics simulation step and a finite element method based deformation step simulating and visualizing the blood vessel wall deformation for a complete cardiac cycle.