Pranav Bhagirath

31 Multimodality imaging for patient evaluation and guidance of catheter ablation for atrial fibrillation Figure 4. Planning view for PV flow map. Left row; coronal view of the LA used to plan a flow map of the right superior PV. Right row; sagittal view with the phase component of the flow map. Chronic atrial injury The extent of post-ablation scar is shown to stabilize after a period of 3 months (46) . Studies utilizing this information suggest a correlation between procedural outcome and location and volume of scar tissue post-ablation (47;48) . Results indicated absence of AF recurrence in the presence of circumferential scar around all PV’s, whereas in patients with less than 2 PV’s completely encircled, the chances of arrhythmia recurrence increased considerably (47) . Another study demonstrated that extensive scarring (≥ 1.98 ml) especially around the inferior part of the right inferior pulmonary vein, is associated with a longer AF free survival (48) .