Figure 3. Wall thickness index % (WTI%) before and after
ablation: comparison among different ablation energies for Pulmonary
Vein Isolation (PVI).
Figure 4. ICE image of ostium of same right inferior pulmonary
vein, before (left panel) and after cryoablation (right panel). The
white arrow indicates acute tissue thickening suggestive of oedema,
while the white asterisks indicate a dissection flap.