JACC. Clinical electrophysiology, Volume 4, Issue 9, 1 1 2018, Pages 1163-1165 Characterization of Septal Scars in Nonischemic Left Ventricular Cardiomyopathy by Cardiac Magnetic Resonance Imaging Versus Electroanatomical Mapping: Superior, Inferior, or Complementary? Zeppenfeld K, Piers SRD