Fig. 3.

Quantitative intra- and inter-patient comparisons using the LA-SUM. a–c Intra-patient comparisons. Percentage coverage of LA-SUM regions during ablation (FTI > 100 gs) is compared with lesion formation assessed by LGE on post-ablation CMR imaging, showing a weak but significant correlation (a). Examples of cases showing close correlation (b) and weak correlation (c) between FTI and LGE on a region-by-region basis are shown. d LA-SUM facilitates inter-patient comparisons, demonstrated here for average FTI applied in each WACA quadrant for each vein during ablation