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Activation and endocardial bipolar voltage mapping from an arrhythmogenic right ventricular cardiomyopathy/dysplasia patient with electrical storm. Ventricular tachycardia circuit was dependent of a critical isthmus located in the endocardial right ventricular free wall. Voltage mapping by modifying the voltage scale (left and middle) allowed identifying the low voltage channel between 2 areas of dense scar.
