Title :
Computational issues arising in models of the inverse problem of electrocardiography
Author :
Throne, Robert D. ; Olson, Lorraine G.
Author_Institution :
Dept. of Electr. Eng., Nebraska Univ., Lincoln, NE, USA
Abstract :
The authors compare a recently proposed generalized eigensystem approach to more widely used truncated singular value decomposition and zero-order Tikhonov regularization for solving multidimensional elliptic inverse problems. As a test case, the authors use a finite element representation of a homogeneous eccentric spheres model of the inverse problem of electrocardiography. Special attention is paid to numerical issues of accuracy, convergence, and robustness
Keywords :
electrocardiography; finite element analysis; inverse problems; physiological models; singular value decomposition; computational issues; electrocardiography inverse problem models; finite element representation; generalized eigensystem approach; homogeneous eccentric spheres model; multidimensional elliptic inverse problems; numerical accuracy; numerical convergence; numerical robustness; truncated singular value decomposition; zero-order Tikhonov regularization; Convergence of numerical methods; Electrocardiography; Equations; Finite element methods; Heart; Inverse problems; Mechanical engineering; Multidimensional systems; Robustness; Singular value decomposition; Testing;
Conference_Titel :
Engineering in Medicine and Biology Society, 1994. Engineering Advances: New Opportunities for Biomedical Engineers. Proceedings of the 16th Annual International Conference of the IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-2050-6
DOI :
10.1109/IEMBS.1994.411783
