Patient-specific computational analysis of the influence of a stent on the unsteady flow in cerebral aneurysms

Kenji Takizawa, Kathleen Schjodt, Anthony Puntel, Nikolay Kostov, Tayfun E. Tezduyar*

*この研究の対応する著者

研究成果: Article査読

85 被引用数 (Scopus)

抄録

We present a patient-specific computational analysis of the influence of a stent on the unsteady flow in cerebral aneurysms. The analysis is based on four different arterial models extracted form medical images, and the stent is placed across the neck of the aneurysm to reduce the flow circulation in the aneurysm. The core computational technique used in the analysis is the space-time (ST) version of the variational multiscale (VMS) method and is called "DSD/SST-VMST". The special techniques developed for this class of cardiovascular fluid mechanics computations are used in conjunction with the DSD/SST-VMST technique. The special techniques include NURBS representation of the surface over which the stent model and mesh are built, mesh generation with a reasonable resolution across the width of the stent wire and with refined layers of mesh near the arterial and stent surfaces, modeling the double-stent case, and quantitative assessment of the flow circulation in the aneurysm. We provide a brief overview of the special techniques, compute the unsteady flow patterns in the aneurysm for the four arterial models, and investigate in each case how those patterns are influenced by the presence of single and double stents.

本文言語English
ページ(範囲)1061-1073
ページ数13
ジャーナルComputational Mechanics
51
6
DOI
出版ステータスPublished - 2013 6

ASJC Scopus subject areas

  • 計算力学
  • 海洋工学
  • 機械工学
  • 計算理論と計算数学
  • 計算数学
  • 応用数学

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