Patient-specific computer modeling of blood flow in cerebral arteries with aneurysm and stent

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

    Research output: Contribution to journalArticle

    62 Citations (Scopus)

    Abstract

    We present the special arterial fluid mechanics techniques we have developed for patient-specific computer modeling of blood flow in cerebral arteries with aneurysm and stent. These techniques are used in conjunction with the core computational technique, which is the space-time version of the variational multiscale (VMS) method and is called "DST/SST-VMST." The special techniques include using NURBS for the spatial representation of the surface over which the stent mesh is built, mesh generation techniques for both the finite- and zero-thickness representations of the stent, techniques for generating refined layers of mesh near the arterial and stent surfaces, and models for representing double stent. We compute the unsteady flow patterns in the aneurysm and investigate how those patterns are influenced by the presence of single and double stents. We also compare the flow patterns obtained with the finite- and zero-thickness representations of the stent.

    Original languageEnglish
    Pages (from-to)675-686
    Number of pages12
    JournalComputational Mechanics
    Volume50
    Issue number6
    DOIs
    Publication statusPublished - 2012

    Fingerprint

    Stent
    Aneurysm
    Computer Modeling
    Stents
    Arteries
    Blood Flow
    Blood
    Flow Pattern
    Flow patterns
    Variational multiscale Method
    Mesh
    NURBS
    Sea Surface Temperature
    Mesh generation
    Computational Techniques
    Fluid Mechanics
    Mesh Generation
    Fluid mechanics
    Zero
    Unsteady Flow

    Keywords

    • Cardiovascular fluid mechanics
    • Cerebral aneurysms
    • Mesh generation
    • Patient-specific modeling
    • Stent

    ASJC Scopus subject areas

    • Computational Theory and Mathematics
    • Mechanical Engineering
    • Ocean Engineering
    • Applied Mathematics
    • Computational Mathematics

    Cite this

    Patient-specific computer modeling of blood flow in cerebral arteries with aneurysm and stent. / Takizawa, Kenji; Schjodt, Kathleen; Puntel, Anthony; Kostov, Nikolay; Tezduyar, Tayfun E.

    In: Computational Mechanics, Vol. 50, No. 6, 2012, p. 675-686.

    Research output: Contribution to journalArticle

    Takizawa, Kenji ; Schjodt, Kathleen ; Puntel, Anthony ; Kostov, Nikolay ; Tezduyar, Tayfun E. / Patient-specific computer modeling of blood flow in cerebral arteries with aneurysm and stent. In: Computational Mechanics. 2012 ; Vol. 50, No. 6. pp. 675-686.
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