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Patient‐specific arterial fluid–structure interaction modeling of cerebral aneurysms
Author(s) -
Takizawa Kenji,
Moorman Creighton,
Wright Samuel,
Purdue John,
McPhail Travis,
Chen Peng R.,
Warren Joe,
Tezduyar Tayfun E.
Publication year - 2010
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/fld.2360
Subject(s) - fluid–structure interaction , lumen (anatomy) , computational fluid dynamics , computation , focus (optics) , fluid mechanics , geometry , boundary (topology) , arterial wall , mesh generation , angiography , computer science , mechanics , mathematics , radiology , medicine , physics , algorithm , surgery , mathematical analysis , finite element method , engineering , cardiology , structural engineering , optics
We address the computational challenges related to the extraction of the arterial‐lumen geometry, mesh generation and starting‐point determination in the computation of arterial fluid–structure interactions (FSI) with patient‐specific data. The methods we propose here to address those challenges include techniques for constructing suitable cutting planes at the artery inlets and outlets and specifying on those planes proper boundary conditions for the fluid mechanics, structural mechanics and fluid mesh motion and a technique for the improved calculation of an estimated zero‐pressure arterial geometry. We use the stabilized space–time FSI technique, together with a number of special techniques recently developed for arterial FSI. We focus on three patient‐specific cerebral artery segments with aneurysm, where the lumen geometries are extracted from 3D rotational angiography. Copyright © 2010 John Wiley & Sons, Ltd.