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ISBI
2002
IEEE

Joint estimation of cardiac kinematics and material parameters from noisy imaging data and uncertain mechanical model

15 years 4 days ago
Joint estimation of cardiac kinematics and material parameters from noisy imaging data and uncertain mechanical model
There have been many efforts using image analysis algorithms to study cardiac kinematics, or using biomechanics strategies to study myocardial material properties. In this paper, we propose a novel stochastic mechanics strategy and an extended Kalman filter (EKF) computational framework to estimate the cardiac kinematics functions and material model parameters simultaneously, given a particular a priori myocardial material model with uncertain parameters and a posteriori noisy imaging/imaging-derived data. We address the issues concerning the data-dependent uncertainty of the constraining mechanical models (and their parameters), which are needed in the ill-posed problems. Because of the periodic nature of the cardiac dynamics, we conclude experimentally that it is possible to adopt this physicalmodel based optimal estimation approach to achieve converged estimates. Results from canine MR phase contrast images and linear elastic model are presented.
Huafeng Liu, Edward W. B. Lo, Pengcheng Shi
Added 20 Nov 2009
Updated 20 Nov 2009
Type Conference
Year 2002
Where ISBI
Authors Huafeng Liu, Edward W. B. Lo, Pengcheng Shi
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