摘要
利用核磁共振图像以及CAD、CAE软件建立大脑Willis环有限元模型,视血液为不可压缩牛顿粘性流体,视血管为弹性体。通过ANSYS-CFX软件对正常情况与不同颈内动脉狭窄程度时的Willis环分别进行了流固耦合有限元分析,结果表明,前交通动脉部分的血流随狭窄程度增大呈增大趋势,血管应力集中位置与前交通动脉瘤的发生位置相一致,为临床诊断和治疗脑血管疾病提供了一定依据。
Anterior communicating artery （AcoA） is one of the important collateral circulation in the circle of willis. A 3D finite element model was developed combining patient-specific MR images with CAD and CAE softwares, in which incompressible viscous Newtonian blood flow and elastic vessel were simulated. By comparing the Willis circle in normal condition and with different degrees of internal carotid artery stenosis with fluid-solid coupling finite element analysis, it is found that the blood flow of Willis circle increased as the degree of stenosis increases and the stress concentration region of AeoA was the same with the occuring position of anterior communicating aneurysms. The results can provide a reference for future clinic applications.
出处
《太原理工大学学报》
CAS
北大核心
2013年第1期111-115,共5页
Journal of Taiyuan University of Technology
基金
国家自然科学基金资助项目(10672114
11102126)
关键词
WILLIS环
前交通动脉
颈内动脉狭窄
流固耦合
有限元分析
circle of willis
anterior communicating artery
internal carotid artery stenosis
fluid structure interaction
finite element analysis
