Effect of inflow and outflow angles on the computational hemodynamics in abdominal aortic aneurysm

摘要：

　　To help with the clinical screening and diagnosis of abdominal aortic aneurysm (AAA),we evaluated the effect of inflow angle (IA) and outflow bifurcation angle (BA) on the distribution of blood flow and wall shear stress (WSS) in an idealized AAA model.A 2D incompressible Newtonian flow is assumed and the computational simulation is performed using finite volume method.The results showed that the largest WSS often located at the proximal and the distal end of the AAA.An increase in IA resulted in an increase in maximum WSS.We also found that WSS was maximal when BA was 90°.IA and BA are two important geometrical factors,they may help with AAA risk assessment along with the commonly used AAA diameter.

关键词： Abdominal Aortic Aneurysm Inflow Angle Wall Shear Stress Bifurcation Angle Rupture

作者: Zhengtao Shi Zhi-Yong Li

作者单位: School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China

会议类型: 国际会议

会议名称: World Congress on Medical Physics and Biomedical Engineering (2012年医学物理及生物医学工程国际会议(IFMBE))

会议地点: 北京

会议语种:英文

页码: 153-156

在线出版日期: 2012-05-26（万方平台首次上网日期，不代表论文的发表时间）