4.1 Main findings
This study demonstrated that (1) NPAs were mostly found around the PV
antrum, (2) the fibrotic tissue properties of the NPAs predominantly
consisted of heterogenous fibrotic tissue with an LGE-entropy of ≧ 5.7
and LGE-volume ratio of ≧ 10%, (3) no NPAs could be found in the dense
fibrotic tissue areas with an LGE-volume ratio of ≧ 50%, and (4) there
was no significant correlation between the NPAs and CFAE areas.