[Automated mapping of the heart electrical potentials in myocardial infarct patients]

A method is developed for automated cartography of the heart's electric potentials from 90 points on the chest surface. The input data program determines characteristic QRS profiles on the basis of change in the value of the first derivative, labelling the identifiable characteristic outlines, computes the gradients for Q/R, R/S amplitude ratios for every element of the field and estimates zone area for each gradient and mean Q, R, S wave amplitudes for all points within the field.