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Imaging analysis of collagen fiber networks in cusps of porcine aortic valves: effect of their local distribution and alignment on valve functionality

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  • Mor Mega
  • Gil Marom
  • Rotem Halevi
  • Ashraf Hamdan
  • Danny Bluestein
  • Rami Haj-Ali

Abstract

The cusps of native aortic valve (AV) are composed of collagen bundles embedded in soft tissue, creating a heterogenic tissue with asymmetric alignment in each cusp. This study compares native collagen fiber networks (CFNs) with a goal to better understand their influence on stress distribution and valve kinematics. Images of CFNs from five porcine tricuspid AVs are analyzed and fluid-structure interaction models are generated based on them. Although the valves had similar overall kinematics, the CFNs had distinctive influence on local mechanics. The regions with dilute CFN are more prone to damage since they are subjected to higher stress magnitudes.

Suggested Citation

  • Mor Mega & Gil Marom & Rotem Halevi & Ashraf Hamdan & Danny Bluestein & Rami Haj-Ali, 2016. "Imaging analysis of collagen fiber networks in cusps of porcine aortic valves: effect of their local distribution and alignment on valve functionality," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 19(9), pages 1002-1008, July.
    • Handle: RePEc:taf:gcmbxx:v:19:y:2016:i:9:p:1002-1008
    DOI: 10.1080/10255842.2015.1088009
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    References listed on IDEAS

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    1. Christopher A Rock & Lin Han & Todd C Doehring, 2014. "Complex Collagen Fiber and Membrane Morphologies of the Whole Porcine Aortic Valve," PLOS ONE, Public Library of Science, vol. 9(1), pages 1-9, January.
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