Three-dimensional images obtained through a multi-slice CT scan of Case 1 in the anteroposterior (A), posteroanterior (B), right-lateral (C), and left-lateral (D) views. Venogram of the LCPV during cryoballoon ablation using the 28 mm (E) and 31 mm (F) modes. Venogram of the RIPV during cryoballoon ablation using the 28 mm (G) and 31 mm (H) modes. Venogram of the RSPV during cryoballoon ablation using the 28 mm (I) and 31 mm (J) modes. CT, computed tomography; LCPV, left common pulmonary vein; RIPV, right inferior pulmonary vein; RSPV, right superior pulmonary vein.