Limitations
There were several limitations to our study. Firstly, there were no cases that underwent a 2nd session of ablation. The reconnections of the SVC have not been evaluated, and therefore, the medium- to long-term durability was unclear. Secondly, this study was a single-center retrospective study based on the FTI guided ablation with a relatively small sample of subjects. So further randomized controlled studies based on the AI guided ablation would be needed for its validation in a larger cohort. Finally, the SVCI could be the result of SVC stenosis. However, we did not perform computed tomography after the ablation. Hence the incidence of SVC stenosis was unknown.