Value and limitations of an inverse solution for two equivalent dipoles in localising dual accessory pathways.

摘要: Investigations were carried out into whether an equivalent generator consisting of two dipoles could be used to detect dual sites ventricular activity. A computer model the human myocardium was simulate activation sequences initiated at eight different pairs positioned on epicardial surface atrio-ventricular ring. From these sequences, 117-lead body potentials (covering anterior and posterior torso), 64-lead magnetic field maps (above chest) 128-lead simulated then localise accessory pathways employing dipoles. Average localisation errors 12 mm, 12mm 9mm, respectively, when potentials, fields used. The results study suggest that solving inverse problem for provide additional information prior electrophysiological study.