P6643Utility of ripple mapping localize the site of origin and to detect real substrate during catheter ablation of ventricular arrhythmia. (28th August 2018) - Maeda, S; Goya, M; Nakagama, S; Hanyu, Y; Enomoto, Y; Lee, K; Shiohira, S; Sekigawa, M; Yagishita, A; Takahashi, Y; Kawabata, M; Hirao, K