Effect of Surface Electrode Number on Estimates of Cardiac Dipole Moment

This study reports on the errors in the calculation of a heart dipole introduced by deleting individual electrode contributions to a surface potential map. The potential at 150 points on each of 6 normal children was available at several instants of the QRS cycle. Although it was impossible to test...

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Bibliographic Details
Published in:IEEE transactions on biomedical engineering 1970-01, Vol.BME-17 (1), p.58-65
Main Authors: Weiss, George H., Fischmann, Eugene J.
Format: Article
Language:English
Subjects:
Cardiology
Electrocardiography
Electrocardiography - instrumentation
Electrodes
Electrophysiology
Heart
Heart - physiology
Hospitals
Humans
Methods
Sampling methods
Surface Properties
Surface reconstruction
Surface topography
Testing
Torso
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Description
Summary:This study reports on the errors in the calculation of a heart dipole introduced by deleting individual electrode contributions to a surface potential map. The potential at 150 points on each of 6 normal children was available at several instants of the QRS cycle. Although it was impossible to test all possible sets of deleted points, or all possible methods of compensatory weighting of the residual points, the results indicate that a number of electrodes at least as great as 100 is required to produce consistent relative errors of less than 15 percent, if surface potential integration is employed in determining the heart's total dipole moment.
ISSN:0018-9294
1558-2531
DOI:10.1109/TBME.1970.4502685