A 43 year old man with known arrhythmogenic right ventricular cardiomyopathy (ARVC) was referred for a cardiovascular magnetic resonance (CMR) scan to assess disease progression. The diagnosis had been established 20 years earlier by right ventricular angiography. There was no evidence of coronary artery disease. He had previously suffered two cardiac arrests and declined intervention; recurrent ventricular tachycardia was eventually …