2.6 CFAE mapping
CFAE mapping and ExTRa Mapping could be simultaneously performed and the correlation between the CFAE area and AF rotors was assessed. To clarify the relationship, we assessed whether the NPAs or passive areas (PAs) could be overlapped with CFAE areas. The overlap of the NPAs or PAs with the CFAE areas was considered positive if the CFAE areas occupied ≥50% of each NPA or PA.