LIMITATIONS
cerebral lesions
CEREBRAL EMBOLISM
We will not acquire brain MRI before CA in this study, and therefore, it is possible that postprocedural SCEs/SCLs may occur preprocedural. However, we think that is highly unlikely because acute cerebral lesions will be defined on 3 T DWI, which is positive only a few weeks after a cerebral embolism, and actually, acute cerebral lesions were found in none of the previous studies that assessed preprocedural MRI in patients who underwent CA of AF.