Figure 1. A representative case
(A) Ablation points for ipsilateral encircling PV isolation on a three-dimensionally-constructed computed tomography image. Each point has a 4-mm diameter. Operators attempted to deliver radiofrequency application at 4 mm from adjacent points. (B) Propagation map depicting the conduction gap and LI drop at each point (white numbers in red tags). Ablation points with a gap (yellow arrows) had a small LI drop (<15 ohm).