医療用画像から再構築した大動脈瘤内の定常流れの検討(<特集>ライフサイエンス)

概要

論文の詳細を見る
Aneurysms are the end results of atherosclerosis: they are serious conditions in which the arterial wall expands like a balloon due to the decreased resistance of the wall structure to the dynamics action such as the pressure inside the artery. We created a realistic artery shape with an aneurysm, which we reconstructed from MRI images, and simulated the flow through the shapes. The simulated shape was reconstructed from a series of two-dimensional slices obtained in vivo using MRI imaging on a human aorta. A finite volume formulation of the Navier-Stokes equations was used to simulate flow through the simulated artery. In comparing the simulation results two cases, we obtained the results that showed different flow patterns in descending aorta. High wall shear stress was obtained on the wall on the back side. Moreover, high pressure values were obtained from the aneurysm wall.
日本シミュレーション学会の論文
2004-03-15