Magnetocardiographic mapping of reentry tachycardias: A new non invasive method to localize concealed accessory pathways

Three cases are reported, in whom MCG mapping, performed during sustained reentry tachycardias, was successful in localizing respectively the atrial insertion of a right-sided Kent bundle (case n° 1), the ventricular insertion of a nodo-ventricular (Mahaim) accessory pathway (case n° 2) and reentry within the atrio ventricular node (case n° 3).