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An Experimental Study of the Effects Anatomical Variations Have on Collateral Flows Within the Circle of Willis

[+] Author Affiliations
Paul Fahy, Patrick Delassus, Padraig O’Flynn, Liam Morris

Galway Mayo Institute of Technology, Galway, Ireland

Paper No. SBC2011-53723, pp. 265-266; 2 pages
  • ASME 2011 Summer Bioengineering Conference
  • ASME 2011 Summer Bioengineering Conference, Parts A and B
  • Farmington, Pennsylvania, USA, June 22–25, 2011
  • Conference Sponsors: Bioengineering Division
  • ISBN: 978-0-7918-5458-7
  • Copyright © 2011 by ASME


The circle of Willis (CoW) is a complex arterial network comprising of major cerebral arteries that converge to form a pentagonal arrangement as shown in Figure 1(A). This arterial network supplies oxygen-enriched blood to the brain. An incomplete CoW can exist in up to 50% of cases [1]. These missing vessels can be accommodated by the collateral flow feature within the CoW configuration. In certain circumstances, anatomical variations within the CoW can result in undesirable flow patterns [2–3]. It is unclear from the literature what effects these variations can have on blood flow collision paths within a complete CoW.

Copyright © 2011 by ASME
Topics: Flow (Dynamics)



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