Figure 1: The discrepancy between the RV endocardial (Panel A) and epicardial (Panel B) voltage maps is illustrated in this patient with VT and suspected ARVC. Purple indicates bipolar voltage > 1.5 mV. While PES from the RVa (Panel C) did not induce VT, VT was readily induced with PES from the RV epicardium (Panel D). Maroon tags are ablation sites.