Figure 1: Transverse, A, contrast-enhanced MR angiographic images and inversion-recovery gradient-echo, B, preablation and, C, postablation delayed enhancement matched MR images (4.3/2.1; flip angle, 15°; field of view, 30 x 30 x 12.5 cm; voxel size, 1.3 x 1.3 x 5 mm) acquired more than 30 days after ablation in three patients with AF. The MR angiographic image provides anatomic context. Delayed enhancement is not observed before ablation (arrows in B) but is readily observed after ablation (arrows in C). LIPV = left inferior PV, LSPV = left superior PV, RIPV = right inferior PV, RSPV = right superior PV.