Journal
MEDICAL ENGINEERING & PHYSICS
Volume 30, Issue 6, Pages 774-782Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.medengphy.2007.09.006
Keywords
hemodynamics; aneurysm; computational fluid dynamics; artery geometry
Categories
Funding
- Ministry of Education, Culture, Sports, Science and Technology (MEXT) [RSS21]
- MEXT and JSPS Scientific Research [768]
- Biomechanics at Micro- and Nanoscale Levels [6200031]
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We show the importance of arterial geometry in intra-aneurysmal hemodynamics. Using a new geometric parameterized saccular aneurysm model including parameters for parent artery shape and the configuration of the aneurysm in the parent artery, we performed a parametric computational fluid dynamics study. We examined lateral saccular aneurysm models with different aneurysm shapes (i.e., the ratio of aneurysm height to aneurysm neck diameter) and different configurations (i.e., the torsion angle of the aneurysm to the upstream part of the parent artery). The aneurysm lateral to the curve of the parent artery had significantly higher wall shear stress than the aneurysm inside or outside the curve of the artery, even with the same shape of the aneurysm. Our findings SUI-est the important role played by the configuration of the aneurysm relative to the parent artery in intra-aneurysmal hemodynamics. (C) 2007 IPEM. Published by Elsevier Ltd. All rights reserved.
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