Computing and visualizing electric potentials and current pathways in the thorax.

摘要: The long-term goal of electrocardiography is to relate electric potentials on the body surface with activities in heart. Many previously reported studies have focused direct links between heart and potentials. goals this study were first validate computational methods determining volume currents high-resolution experimental measurements then use interactive visualization thoracic understand features electrocardiographic fields from measured cardiac sources. We developed both simulation based a realistic shaped torso phantom containing an isolated, perfused dog Interventions included atrial pacing, single pacing simultaneously at multiple locations ventricles. Simulated closely matched torso-tank preparation (mean correlation coefficients 0.95). Simulation further provided means estimating current field computed local geometric conductive properties medium. Applying these techniques under variety conditions, we demonstrated that can provide many insights into relationship potential Specifically, shown factors including source configuration location play important role what extent activity directly visible electrocardiogram. computation toolkit explore associated events may new electrocardiology.