Figure 3. LV voltage maps (left panels) showing the pacing site location (distal electrodes of the mapping catheter) in a patient with hypertrophic cardiomyopathy and apical aneurysm are shown. A, the right panel shows the clinical VT was readily induced in this patient with burst pacing from the border of the LV apical aneurysm. The catheter position during stimulation is illustrated in the electroanatomic map on the left and middle of the panel. B, the right panel shows the local signal at the VT isthmus site where the clinical VT was successfully ablated. The left and middle of the panel show the catheter position at the isthmus site, which is in close proximity to the stimulation site that induced the clinical VT.