The objective of this investigation is to study, using a computer model, the torso volume conductor effects on body surface potential electrograms and body surface Laplacian electrograms. A spherical volume conductor model was used to approximate the torso and the heart. Myocardial electrical events were approximated by two distributed dipole-layers representing activation wave fronts propagating from the endocardium to the epicardium. The present computer simulation results indicate that the body surface Laplacian maps provide enhanced performance over the body surface potential maps in resolving the configurations of two activation wavefronts over the anterior wall of the heart.
Bibliographical noteFunding Information:
Acknowledgements-The authors are grateful for valuable discussions with Dr R.J. Cohen and A. Rosenshine. This work was supported in part by a grant from The Whitaker Foundation, a grant from the University of Illinois at Chicago Campus Research Board, a grant from Nihon Kohden Corporation R and D Center, and a grant from the Pittsburgh Supercomputing Center through NIH National Center for Research Resources co-operative agreement 1 P41 RRO6009.
- body surface Laplacian map
- body surface potential map
- computer modeling
- computer simulation