Title :
Reconstruction of endocardial potentials from intracavitary probe potentials: a model study
Author :
Khoury, Dirar S. ; Rudy, Yoram
Author_Institution :
Dept. of Biomed. Eng., Case Western Reserve Univ., Cleveland, OH, USA
Abstract :
An attempt was made to develop and test a mathematical method for reconstructing the potential distribution on the endocardial surface from cavitary potential data measured with a multielectrode intracavitary probe. Such a method will enhance the diagnostic capability of electrophysiologic studies and the ability to locate the site of origin of arrhythmias. The boundary element method combined with Tikhonov regularization was developed and tested on an idealized model of the probe-heart-torso volume conductor. The inverse solution restored stability and accuracy to the endocardial potentials in the presence of errors in estimating cavity geometry and probe position
Keywords :
bioelectric potentials; electrocardiography; physiological models; Tikhonov regularization; arrhythmias origin site; boundary element method; endocardial potentials reconstruction; intracavitary probe potentials; inverse solution; mathematical method; potential distribution; probe-heart-torso volume conductor; Biomedical engineering; Biomedical measurements; Boundary element methods; Conductors; Geometry; Heart rate variability; Laplace equations; Probes; Surface reconstruction; Testing;
Conference_Titel :
Computers in Cardiology 1992, Proceedings of
Conference_Location :
Durham, NC
Print_ISBN :
0-8186-3552-5
DOI :
10.1109/CIC.1992.269460
