個別粒子法を用いたFlow-diverter Stentの有限要素血流解析手法の検討

抄録

A cerebral aneurysm is a type of cerebrovascular disorder in which a balloon-like bulge develops in a part of an artery in the brain. The rupture of a cerebral aneurysm can cause subarachnoid hemorrhage, and the mortality rate after rupture is high, so cerebral aneurysms must be treated before they rupture. Flow-diverter stenting was developed for large cerebral aneurysms. Although analytical methods are available for the study of FDS, the current analytical methods require a large amount of time for modeling. Considering these circumstances, a coupled fluid-structure analysis method that applies DEM particles to FDS was conducted, and flow velocity and pressure were compared with models based on the boundary surfaces of conventional fluid analysis in this study. Although the coupling was confirmed, additional validation is required to apply the method to all vascular regions.