Location of the electrical center of ventricular depolarization

Six normal men and one abnormal man with various thoracic configurations were studied by a precise mirror pattern cancellation technique. Four to six mirror pattern cancellations were determined in each subject. These data were compared geometrically with those obtained from a three-dimensional model of the human torso, and the equivalent heart dipole location in each subject was determined. The method was found practical as a research technique and not excessively time-consuming. The technique is discussed briefly and results presented which indicate that the electrical center for ventricular depolarization was close to the estimated anatomic center of the ventricles in our subjects.