Conclusion
CCTA is feasible to evaluate PDL and device endothelialization after LAAC. The maximum diameter of LAA orifice can independently predict the occurrence of postoperative PDL of LAAC. Future studies are warranted to validate the value of maximum diameter of LAA orifice as a screening index for judgment of PDL risk in patients before LAAC, and as a reference basis for the decision making of individualized anticoagulant therapy after LAAC and AFCA.