A generalized matrix eigensystem approach to the inverse problem of electrocardiography

Author

Throne, Robert D. ; Olson, Lorraine G.

Author_Institution

Dept. of Electr. Eng., Nebraska Univ., Lincoln, NE, USA

fYear

1993

fDate

5-8 Sep 1993

Firstpage

301

Lastpage

303

Abstract

The authors present a new approach to the ill-conditioned inverse problem of electrocardiography which employs finite element techniques to generate a truncated eigenvector expansion which stabilizes the inversion. The body surface potentials are expanded in terms of the eigenvectors, and a least squares fit to the measured body surface potentials is used to determine the coefficients of the expansion. This expansion is then used directly to determine the potentials on the surface of the heart

Keywords

eigenvalues and eigenfunctions; electrocardiography; finite element analysis; inverse problems; matrix algebra; electrocardiographic inverse problem; expansion coefficients; finite element techniques; generalized matrix eigensystem approach; heart surface potentials determination; ill-conditioned inverse problem; inversion stabilization; least squares fit; measured body surface potentials; truncated eigenvector expansion; Eigenvalues and eigenfunctions; Electrocardiography; Equations; Finite element methods; Heart; Inverse problems; Matrix decomposition; Singular value decomposition; Surface fitting; Thermal conductivity;

fLanguage

English

Publisher

ieee

Conference_Titel

Computers in Cardiology 1993, Proceedings.

Conference_Location

London

Print_ISBN

0-8186-5470-8

Type

conf

DOI

10.1109/CIC.1993.378444

Filename

378444