Please use this identifier to cite or link to this item:
|Title:||A simulation framework for estimating wall stress distribution of abdominal aortic aneurysm|
|Source:||Qin, J.,Zhang, J.,Chui, C.-K.,Huang, W.-M.,Yang, T.,Pang, W.-M.,Sudhakar, V.,Chang, S. (2011). A simulation framework for estimating wall stress distribution of abdominal aortic aneurysm. Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS : 900-903. ScholarBank@NUS Repository. https://doi.org/10.1109/IEMBS.2011.6090201|
|Abstract:||Abdominal aortic aneurysm (AAA) rupture is believed to occur when the mechanical stress acting on the wall exceeds the strength of the wall tissue. In endovascular aneurysm repair, a stent-graft in a catheter is released at the aneurysm site to form a new blood vessel and protect the weakened AAA wall from the pulsatile pressure and, hence, possible rupture. In this paper, we propose a framework to estimate the wall stress distribution of non-stented/stented AAA based on fluid-structure interaction, which is utilized in a surgical simulation system (IRAS). The 3D geometric model of AAA is reconstructed from computed tomography angiographic (CTA) images. Based on our experiments, a combined logarithm and polynomial strain energy equation is applied to model the elastic properties of arterial wall. The blood flow is modeled as laminar, incompressible, and non-Newtonian flow by applying Navier-Stokes equation. The obtained pressure of blood flow is applied as load on the AAA meshes with and without stent-graft and the wall stress distribution is calculated by fluid-structure interaction (FSI) solver equipped in ANSYS. Experiments demonstrate that our analytical results are consistent with clinical observations. © 2011 IEEE.|
|Source Title:||Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jan 22, 2018
checked on Jan 19, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.