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TECHNICAL PAPERS: Fluids/Heat/Transport

Experimental Flow Studies in Exact-Replica Phantoms of Atherosclerotic Carotid Bifurcations Under Steady Input Conditions

[+] Author and Article Information
J. Bale-Glickman, Ö. Savaş

Department of Mechanical Engineering, University of California at Berkeley, Berkeley, CA 94720-1740

K. Selby, D. Saloner

Department of Radiology, University of California at San Francisco, San Francisco, CA 94143-0628

J Biomech Eng 125(1), 38-48 (Feb 14, 2003) (11 pages) doi:10.1115/1.1537734 History: Received July 01, 2001; Revised September 01, 2002; Online February 14, 2003
Copyright © 2003 by ASME
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References

Figures

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Magnetic resonance angiograms of (a) a healthy, and (b) an atherosclerotic carotid bifurcation. CCA-common carotid artery; ECA-external carotid artery; ICA-internal carotid artery
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Histological cross-section through an atherosclerotic carotid artery
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Excised atherosclerotic plaque
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Flow phantoms and the details at their flow dividers. (a) Phantom 1, and (b) Phantom 2
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Flow setup. The flow circuit, including the phantom, is stationary. All of the optical components move vertically during data acquisition so that the camera stays focused on the laser sheet as it scans the flow phantom.
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Sample flow illustrating data analysis. (a) Extended PIV image. (b) Streaklines from CW laser flow visualization experiments. (c) Velocity vector field. (d) Vorticity. (e) Streamlines on speed field; an alternate presentation of the velocity field.
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Input speed distributions (grayscale and profile at the dashed line) in CCA at Re=185. (a) Phantom 1, y-step=012 mm, and (b) Phantom 2, y-step=017 mm.
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Phantom 1: ReD=13. (a) Streaklines, (b) Vorticity field, (c), (d), (e) Streamlines at three adjacent planes of the phantom. The xy-steps are each 0.12 mm.
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Phantom 1: ReD=185. (a) Streaklines, (b) Vorticity field, (c), (d), (e) Streamlines at three adjacent planes of the phantom. The xy-steps are each 0.12 mm.
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Phantom 1: ReD=410. (a) Streaklines, (b) Vorticity field, (c), (d), (e) Streamlines at three adjacent planes of the phantom. The xy-steps are each 0.12 mm.
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Phantom 2: ReD=13. (a) Streaklines, (b) Vorticity field, (c), (d), (e) Streamlines at three adjacent planes of the phantom. The xy-steps are each 0.17 mm.
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Phantom 2: ReD=185. (a) Streaklines, (b) Vorticity field, (c), (d), (e) Streamlines at three adjacent planes of the phantom. The xy-steps are each 0.17 mm.
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Phantom 2: ReD=410. (a) Streaklines, (b) Vorticity field, (c), (d), (e) Streamlines at three adjacent planes of the phantom. The xy-steps are each 0.17 mm.
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Streakline detail near vessel wall, ReD=185. (a) Phantom 1, and (b) Phantom 2.

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