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Parametric geometry modeling of the carotid artery bifurcation: the need for new flow metrics

Parametric geometry modeling of the carotid artery bifurcation: the need for new flow metrics
Parametric geometry modeling of the carotid artery bifurcation: the need for new flow metrics
Although well established correlations now exist between regions of reversed flow and sites of arterial disease [1], little evidence is available for methodologies that systematically compare how geometrical differences affect such relationships. Drawing on techniques developed in aerodynamic design, a parametric tuning-fork geometry model of the carotid artery bifurcation - based on the glass models described in [2] - is here employed to investigate the impact of bulb size and the angle of the internal carotid artery (ICA) on time-averaged shear stress. Since we seek to directly compare the effect of varying these geometric parameters, we demonstrate the need for a new metric, the integral of negative mean shear stress (INMSS), to highlight the stronger correlation between the extent of reversed flow and bulb width relative to the angle of the ICA.
1-2
Bressloff, Neil W.
4f531e64-dbb3-41e3-a5d3-e6a5a7a77c92
Banks, Jim
55319e5c-0ad9-4368-9778-fa6a272b1434
Bhaskar, K. Vijaya
1b601a67-0105-4330-b76b-114f6c9c250e
Bressloff, Neil W.
4f531e64-dbb3-41e3-a5d3-e6a5a7a77c92
Banks, Jim
55319e5c-0ad9-4368-9778-fa6a272b1434
Bhaskar, K. Vijaya
1b601a67-0105-4330-b76b-114f6c9c250e

Bressloff, Neil W., Banks, Jim and Bhaskar, K. Vijaya (2004) Parametric geometry modeling of the carotid artery bifurcation: the need for new flow metrics. International Workshop on Flow and Motion, Zurich, Switzerland. 11 - 13 Jul 2004. pp. 1-2 .

Record type: Conference or Workshop Item (Paper)

Abstract

Although well established correlations now exist between regions of reversed flow and sites of arterial disease [1], little evidence is available for methodologies that systematically compare how geometrical differences affect such relationships. Drawing on techniques developed in aerodynamic design, a parametric tuning-fork geometry model of the carotid artery bifurcation - based on the glass models described in [2] - is here employed to investigate the impact of bulb size and the angle of the internal carotid artery (ICA) on time-averaged shear stress. Since we seek to directly compare the effect of varying these geometric parameters, we demonstrate the need for a new metric, the integral of negative mean shear stress (INMSS), to highlight the stronger correlation between the extent of reversed flow and bulb width relative to the angle of the ICA.

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Published date: July 2004
Venue - Dates: International Workshop on Flow and Motion, Zurich, Switzerland, 2004-07-11 - 2004-07-13

Identifiers

Local EPrints ID: 30266
URI: http://eprints.soton.ac.uk/id/eprint/30266
PURE UUID: 59e44ed1-80f5-41d6-9894-f9d28966b802

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Date deposited: 18 May 2006
Last modified: 15 Mar 2024 07:39

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Contributors

Author: Jim Banks
Author: K. Vijaya Bhaskar

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