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Computational Hemodynamic Evaluation of Two Clinical Flow-Diverter Treatment Strategies: Overlapping Stents vs. Dense Compaction of a Single Stent

[+] Author Affiliations
Robert Damiano, Jianping Xiang, Adnan Siddiqui, Hui Meng

State University of New York at Buffalo, Buffalo, NY

Paper No. DETC2014-35716, pp. V003T12A016; 2 pages
doi:10.1115/DETC2014-35716
From:
  • ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 3: 16th International Conference on Advanced Vehicle Technologies; 11th International Conference on Design Education; 7th Frontiers in Biomedical Devices
  • Buffalo, New York, USA, August 17–20, 2014
  • Conference Sponsors: Design Engineering Division, Computers and Information in Engineering Division
  • ISBN: 978-0-7918-4634-6
  • Copyright © 2014 by ASME

abstract

We employed computational fluid dynamics (CFD) and finite element method (FEM) to investigate the hemodynamic effect of two flow-diversion strategies of cerebral aneurysm treatment: overlapping stents and dense compaction of a single stent. Three representative patient-specific aneurysms were used as test cases, and flow diverters were virtually deployed into the models. Aneurysmal hemodynamic modification by flow diverters is strongly correlated with the metal coverage rate across the aneurysm neck, and not uniquely determined by FD deployment strategies. Fusiform aneurysms may be more favorable for achieving dense compaction for increased metal coverage rate than saccuclar aneurysms. To induce high flow reduction, the overlapping strategy may be more suitable for sidewall aneurysms, and the dense compaction strategy for fusiform aneurysms.

Copyright © 2014 by ASME

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