文献类型：会议论文

英文题名：Numerical simulation in patient-specific internal carotid aneurysm

作者：Fu, Wenyu[1]; Qiao, Aike[2]

第一作者：付文宇

通讯作者：Fu, W.

机构：[1] College of Mechanical and Electrical Engineering, Beijing Union University, Beijing, China; [2] College of Life Science and Bioengineering, Beijing University of Technology, Beijing, China

第一机构：北京联合大学机器人学院

会议论文集：Proceedings - 2011 International Conference on Computational and Information Sciences, ICCIS 2011

会议日期：October 21, 2011 - October 23, 2011

会议地点：Chengdu, Sichuan, China

语种：英文

外文关键词：Computational fluid dynamics - Computerized tomography - Hemodynamics - Reynolds number - Shear stress - Vortex flow - Wall flow

摘要：The objective of this study is to investigate the hemodynamics in patient-specific internal carotid aneurysm and discuss the reason for rupture of aneurysm. A 3-Dimensional pulsatile blood flow in internal carotid with a sidewall aneurysm was studied numerically with the average Reynolds number of 704. Patient-specific model whose parent artery has a large "S" bending and a sidewall aneurysm was constructed from CT data. Unsteady, incompressible, 3-Dimensional Navier-Stokes equations were employed to solve the flow field. The temporal distributions of hemodynamic variables during the cardiac cycle such as streamlines, wall pressure and wall shear stress (WSS) in the arteries and aneurysm were analyzed. From streamlines it can be found that there is an obvious vortex flow in aneurismal cavity in a cardiac cycle. The type of this vortex flow is not changed in a cardiac cycle. As far as Wall Shear Stress, there is a region in aneurismal neck where the value of WSS is relatively high. Growth and rupture mechanism of internal carotid aneurysm in patient can be analyzed based on patient-specific model and hemodynamics simulation. ? 2011 IEEE.