Cerebral Aneurysm Hemodynamics and a Length of Parent Vessel (original) (raw)

IFMBE Proceedings, 2009

Abstract

ABSTRACT Patient specific analysis of cerebral aneurysm hemodynamics is based on methods of computational fluid dynamics (CFD) and non-invasive medical imaging. The flow results are influenced by the reconstructed geometry, especially by the length of the reconstructed parent vessel. To investigate the influence of the length of the parent vessel, rotational angiography data (3DRA) of three cerebral aneurysms were used. The aneurysms were segmented and three models of each aneurysm with different vessel lengths were generated. For these nine models, flow simulations were performed using the CFD program FLUENT. The objective was the analysis of the wall shear stress (WSS) distributions at the aneurysm dome. The results show that the reconstructed parent vessel should be as long as possible - the minimum length should be at least 6 times the diameter of the inlet vessel.

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