Using computational fluid dynamic for evaluation of rupture risk of micro cerebral aneurysms in the growth process: Hemodynamic analysis

Abstract

The significance of the hemodynamic analysis in the growth process of the micro saccular intracranial aneurysm is undeniable. This study has investigated the change of hemodynamic factors in the evolution process of the saccular aneurysm. The main goal is to estimate the rupture risk of aneurysm in the growth process. The numerical method is applied for the investigation of the hemodynamic factors in the evolution process of the saccular intracranial aneurysms. Wall shear stress, pressure and Oscillatory index are analyzed in this research. Two scale-down models and one scale-up geometry of the saccular aneurysm are studied in this paper. Presented results disclosed that mean wall shear stress increases more than two times when the intracranial aneurysm scale is 1/4 original size.