Legend. PET polarmap (left and middle) shows smaller defects in regional distribution of perfusion by [13N]-ammonia (white) than of innervation by [11C]- epinephrine retention (blue). 3D electroanatomic map (anterior view, top right) shows reduced endocardial voltage, and propagation map shows earliest activation (bottom right, red arrow) of ventricular tachycardia (VT) in the same distal septum/anterior wall as the PET defects. See page 2273.