The field of electrocardiography is at a cross roads. We have reached an era in cardiovascular about the electrical state of the heart not likely to be available in any other imaging techniques. medicine where it is claimed that "imaging" is king. The innovative and useful ultrasound And, in the body surface potential map, we have an imaging technique that goes beyond struc techniques continue to develop, and, in the wings lie magnetic resonance, position emission, ture-the only other being, perhaps, magnetic resonance, which has the potential for metabolic and, perhaps, other modalities....