Abstract
The rupture of cerebral aneurysm causes subarachnoid hemorrhage which can result in serious permanent neurological deficit or death. Recently, as one of endovascular neurosurgeries, flow diversion is increasingly being performed. In this approach, one or a few stents called "flow diverter (FD)" are deployed into the parent artery holding an aneurysm. However, some complications such as rupture after the treatment have been reported. The typical hypothesis is that such complications are influenced by hemodynamics change after the treatment. Therefore, the investigation about the relation between the specification of FD and the hemodynamics change is needed. In the present study, flow suppression effect of various stents is evaluated. The result shows that by changing the combination of porosity and pore density, stents having different specifications but the same efficacy can be designed. It means the possibility of presence of a better choice considered both hemodynamic effects and mechanical property.
