Identification of Heterogeneous Elastic Properties in Stenosed Arteries: a Numerical Plane Strain Study

Details Identification of Heterogeneous Elastic Properties in Stenosed Arteries: a Numerical Plane Strain Study Identification of Heterogeneous Elastic Properties in Stenosed Arteries: a Numerical Plane Strain Study

2011-10-14

arxiv.org/abs/1110.3199v1

Computer Methods in Biomechanics and Biomedical Engineering 14, 12 (2011) 1-10

Physics

Medical Physics

Scientific paper

10.1080/10255842.2010.547192

Assessing the vulnerability of atherosclerotic plaques requires an accurate knowledge of the mechanical properties of the plaque constituents. It is possible to measure displacements in vivo inside a plaque using magnetic resonance imaging. An important issue is to solve the inverse problem that consists in estimating the elastic properties inside the plaque from measured displacements. This study focuses on the identifiability of elastic parameters e.g. on the compromise between identification time and identification accuracy. An idealised plane strain. Finite Element (FE) model is used. The effects of the FE mesh, of the a priori assumptions about the constituents, of the measurement resolution and of the data noise are numerically investigated.

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