Fluid Dynamic Analysis of Endoleaks in Abdominal Aortic Aneurysm Patients with Stent-Graft Implanted Using Image Processing and Computational Fluid Dynamic Methods

• Main Authors: Shing-Hong Lin, 林星宏
• Other Authors: Chia-Yuan Chen
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/25533997334941439873

碩士 === 國立臺灣科技大學 === 機械工程系 === 102 === Endoleaks can evolve and become severe complications in patients with Abdominal Aortic Aneurysm (AAA). Endoleak is defined as the seepage of blood into the cavity between aneurysm and stent graft wall. Endoleak is usually considered as a check point after the endovascular aneurysm repair (EVAR). Therefore, the early detection and management of endoleak may effectively reduce the need for surgical reoperation of EVAR. A fluid-structure-interaction (FSI) method was employed and performed in this study to quantify the hemodynamics in eight patient-specific AAA models with stent graft implanted. Throughout the stress analysis in conjunction with the image processing, it was found that the location of endoleak is highly correlated with the location of peak wall stress. The presented analytical paradigm offers a reliable alternative for endoleak prediction and detection, and is beneficial for AAA post-treatment.