文献类型：会议论文

英文题名：Analysis of fluid structure interaction based on patient-specific internal carotid aneurysm model

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 4th International Conference on Biomedical Engineering and Informatics, BMEI 2011

会议日期：October 15, 2011 - October 17, 2011

会议地点：Shanghai, China

语种：英文

外文关键词：Biomedical engineering - Blood - Computational fluid dynamics - Deformation - Hemodynamics - Shear stress - Vortex flow

摘要：An intracranial aneurysm (IA) is a pathological dilatation of the cerebral artery wall. Blood flow and pressure inside IA are not steady. Interaction between blood flow and vessel wall reveals stress and deformation of vessel wall in vivo. It also provides more true and reliable information about blood flow. So analysis of Fluid Structure Interaction (FSI) is favor of proper explanation for formation and development of aneuris-mal disease. Patient-specific model whose parent artery has a large "S" bending and a side wall aneurysm was constructed from CT data. Pulsatile calculation of FSI for this constructed model was carried out. 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 (WSS), there is a region in aneurismal neck where the value of WSS is relatively high. At 0.27s in a cardiac cycle, deformation of the vessel wall is the biggest. There are two regions in aneurismal dome where the value of Von Mises Stress is the locally biggest. ? 2011 IEEE.