Myocardial transversely isotropic material parameter estimation from in-silico measurements based on a reduced-order unscented Kalman filter

TY - JOUR

T1 - Myocardial transversely isotropic material parameter estimation from in-silico measurements based on a reduced-order unscented Kalman filter

AU - Xi, Jiahe

AU - Lamata de la Orden, Pablo

AU - Lee, Jack

AU - Moireau, Philippe

AU - Chapelle, Dominique

AU - Smith, Nic

PY - 2011/10

Y1 - 2011/10

N2 - Parameter estimation from non-invasive measurements is a crucial step in patient-specific cardiac modeling. It also has the potential to provide significant assistance in the clinical diagnosis of cardiac diseases through the quantification of myocardial material heterogeneity. In this paper, we formulate a novel Reduced-order Unscented Kalman Filter (rUKF) applied to the left ventricular (LV) nonlinear mechanical model based on cubic-Hermite finite elements. Material parameters in the widely-employed transversely isotropic Guccione's constitutive law are successfully identified for both homogeneous and heterogeneous cases. We conclude that the four parameters in Guccione's law can be uniquely and correctly determined in-silica from noisy displacement measurements of material points located on the myocardial surfaces. The future application of this novel and effective approach to real clinical measurements is thus promising. (C) 2011 Elsevier Ltd. All rights reserved.

AB - Parameter estimation from non-invasive measurements is a crucial step in patient-specific cardiac modeling. It also has the potential to provide significant assistance in the clinical diagnosis of cardiac diseases through the quantification of myocardial material heterogeneity. In this paper, we formulate a novel Reduced-order Unscented Kalman Filter (rUKF) applied to the left ventricular (LV) nonlinear mechanical model based on cubic-Hermite finite elements. Material parameters in the widely-employed transversely isotropic Guccione's constitutive law are successfully identified for both homogeneous and heterogeneous cases. We conclude that the four parameters in Guccione's law can be uniquely and correctly determined in-silica from noisy displacement measurements of material points located on the myocardial surfaces. The future application of this novel and effective approach to real clinical measurements is thus promising. (C) 2011 Elsevier Ltd. All rights reserved.

U2 - 10.1016/j.jmbbm.2011.03.018

DO - 10.1016/j.jmbbm.2011.03.018

M3 - Article

VL - 4

SP - 1090

EP - 1102

JO - Journal Of The Mechanical Behavior Of Biomedical Materials

JF - Journal Of The Mechanical Behavior Of Biomedical Materials

IS - 7

ER -