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Numerical Simulation of Blood Flow in Patient-Specific Stenotic Carotid Bifurcation Geometries

[+] Author Affiliations
Megan Cummins, Jenn S. Rossmann

Lafayette College, Easton, PA

Paper No. IMECE2009-11589, pp. 173-178; 6 pages
doi:10.1115/IMECE2009-11589
From:
  • ASME 2009 International Mechanical Engineering Congress and Exposition
  • Volume 2: Biomedical and Biotechnology Engineering
  • Lake Buena Vista, Florida, USA, November 13–19, 2009
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4375-8 | eISBN: 978-0-7918-3863-1
  • Copyright © 2009 by ASME

abstract

The hemodynamics and fluid mechanical forces in blood vessels have long been implicated in the deposition and growth of atherosclerotic plaque. Detailed information about the hemodynamics in vessels affected by significant plaque deposits can provide insight into the mechanisms and likelihood of plaque weakening and rupture. In the current study, the governing equations are solved in their finite volume formulation in several patient-specific geometries. Recirculation zones, vortex shedding, and secondary flows are captured. The forces on vessel walls are shown to correlate with unstable plaque deposits. The results of these simulations suggest morphological features that may usefully supplement percent stenosis as a predictor of plaque vulnerability.

Copyright © 2009 by ASME

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