The First Study
WTs were evaluated by ICE in 20 patients. Baseline characteristics in patients for the first ICE study are shown in Supplemental Table 1. Figure 3 shows representative ICE images and WT measurements. The LA WTs differed between segments. Table 1 summarizes the measurements of LA WTs. The anterior segment of the left-PV (the left lateral ridge, LLR) had the thickest average WT (6.0±1.3 mm) among all segments. The morphology of LAA varies among patients (Figure 4).
To validate the accuracy and reliability of our ICE-based WT measurement, we also measured WTs using cardiac CT in the same patients (n=6). The ICE-based WTs measurement were almost similar to, or a little bit thicker than, the cardiac CT-based WTs measurement (Supplemental Figure 1 and Supplemental Table 2).