B114 胸部大動脈瘤の発症と進展が壁せん断応力分布に及ぼす影響(B-11 生体流体(1),一般講演)

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  • B114 The influence of initiation and development of the aortic aneurysm on change in wall shear stress

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The aortic arch is characterized by its configuration, large diameter and strong bend, and torsion in the arterial system. These characteristics induce the complex blood flow in the aorta, therefore leading to the distribution of the wall shear stress (WSS). The aortic aneurysm is one of the most serious diseases because of its fatal rupture. The exact cause of the aneurysm is not known. However, it is reported that the aneurysm are most likely to occur at the site where the WSS is relatively high. So we propose that the initiation and growth of aortic aneurysm is related to WSS distribution. In this study, we analyzed flow in aortic arch models with various torsions and development of aortic aneurysm using computational fluid dynamics simulation. The result showed that the distortion of the aortic arch strongly influences WSS distribution, which is suspected to be related to the development of the aortic aneurysms.

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