title: Identification of heterogeneous elastic properties in stenosed arteries: a numerical plane strain study.
abstract: 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.
authors: Center for Health and Engineering PECM CNRS UMR 5146 and IFRESIS INSERM IFR 143, Ecole Nationale Supérieure des Mines, Saint-Etienne, France. franquet@emse.fr
authors: Alexandre
authors: A
authors: Franquet
authors: Stéphane
authors: S
authors: Avril
authors: Rodolphe
authors: R
authors: Le Riche
authors: Pierre
authors: P
authors: Badel