Finite-Element Modeling of the Hemodynamics of Stented Aneurysms

[+] Author and Article Information
Gordan R. Stuhne, David A. Steinman

Imaging Research Labs, Robarts Research Institute, 100 Perth Dr., P.O. Box 5015, London, Ontario, Canada N6A 5K8 Department of Medical Biophysics, University of Western Ontario, Medical Sciences Building, London, Canada N6A 5C1, Phone: (519) 663-5777 ext. 34113, Fax: (519) 663-3078

J Biomech Eng 126(3), 382-387 (Jun 24, 2004) (6 pages) doi:10.1115/1.1762900 History: Received July 29, 2003; Revised October 10, 2003; Online June 24, 2004
Copyright © 2004 by ASME
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NURBS surface rendering indicating the isoparametric lines and patch structure of the stented aneurysm model. Front and side views illustrate the symmetry of the model and indicate the key model dimensions.
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Physiological time variation of Re (computed on the basis of vessel diameter and RMS inflow velocity) over one cardiac cycle.
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Surface triangulation from the most finely resolved stented mesh (with Δ=425 μm,2δ/d=0.35). Faces of quadratic elements are subdivided into linear triangles, and close-ups of two representative details are shown.
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Surface distributions of WSS from the steady stented simulations with 2δ/d=1.00 (top), 2δ/d=0.60 (middle), and 2δ/d=0.35 (bottom). WSS is shown as a fraction of the asymptotic value for a straight cylindrical artery.
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Sample streamlines in stented pulsatile flow near peak systole (top) and peak diastole (bottom). Streamlines are traced forward and backward from seed points along the diagonals of the overlaid regular 4×4 grid.




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