Fig. 4.

Evolution in volumes of acute T₂-derived edema post-ablation. a Anterior wall RF lesion visualized in T₂ maps with T₂-derived edema delineated (black lines; scale bars = 1 cm). b Cumulative volume of T₂-derived edema normalized to baseline (the first image acquisition), with time after ablation. Interpolated data from 13 lesions were used to calculate mean and SE curves. All acquired data were used; the mean curve is shown only out to 172 min due to insufficient data beyond this point to create error bars