3.1 Patient and procedural characteristics
The patient and procedural characteristics are shown in Table
1 . The mean age was 66±12 years, mean left atrial dimension 43±8 mm,
and mean left ventricular ejection fraction 60±8%. Ten (67%) out of 15
patients underwent an initial AF catheter ablation. The time from the
MRI acquisition to the AF ablation was 95±60 days. The mean AWT in 287
areas in the LA in 15 patients was 2.22±0.25 mm.