Experimentally derived realistic constraints on epicardial potential distributions

Spatial and temporal constraints, taking the form of time dependent envelopes and epicardial geometry partitions, respectively, were created from experimental studies of canine epicardial and torso potential map data. Such constraints are of interest in themselves as potential characterisations of in variants and markers of pacing site, induced ischemia, etc., and also may help provide an alternate approach to the inverse problem of electrocardiography.