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Numerical Modelling of Blood Flow in the Mouse Aortic Arch Using Inflow Velocities Obtained by Phase-Contrast MRI

[+] Author Affiliations
Asimina Kazakidi, Marzena Wylezinska, Yvette Bohraus, Mark Van Doormaal, Jordi L. Tremoleda, Willy Gsell, Peter D. Weinberg, C. Ross Ethier

Imperial College London, London, UK

Paper No. SBC2010-19270, pp. 555-556; 2 pages
  • ASME 2010 Summer Bioengineering Conference
  • ASME 2010 Summer Bioengineering Conference, Parts A and B
  • Naples, Florida, USA, June 16–19, 2010
  • Conference Sponsors: Bioengineering Division
  • ISBN: 978-0-7918-4403-8
  • Copyright © 2010 by ASME


Atherosclerotic lesions have a highly non-uniform distribution in regions of arterial branching and curvature, consistent with hemodynamic factors, in particular wall shear stress (WSS), controlling their development. The widespread and increasing use of the mouse as a model for studying atherosclerosis has encouraged investigation of the hemodynamics of the mouse aortic arch [1–3], in which previous studies have revealed areas of high and low lesion prevalence and variation in the expression of pro-atherogenic molecules [4]. Our previous computational simulations [1–2] did not produce distributions of WSS that explain the pattern of lesions. We are currently investigating whether incorporation of more realistic aortic root velocity measurements, obtained using phase-contrast magnetic resonance imaging (PC-MRI), into these simulations can improve the correlation with disease. Here we present velocities obtained by PC-MRI and preliminary simulations employing the data.

Copyright © 2010 by ASME



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