“…To characterize the effect of CF applied over time, the system automatically detects the ablation time and calculates FTI and LSI only when the ablation catheter stays within the confined area. FTI was defined as the total CF integrated over the time of RF delivery, and the formula of LSI was derived from a mathematical expression that incorporates CF, impedance, power, and duration of RF application . AutoMark settings for filter thresholds in this study were as follows: for catheter position stability, the minimum marker time was 3 seconds, the marker spacing was 3 mm, and the away time was 8 seconds.…”