Figure legends
Figure 1. Intracardiac echo (ICE) imaging of the left atrium (LA) and esophagus. ICE was obtained at 4 height levels, the left superior pulmonary vein (LSPV) level, inter venous carina level, left inferior pulmonary vein (LIPV) level, and bottom of LIPV level (Panel A ). The LA posterior wall is bright and is distinguished from less echogenic muscle layers of the esophagus (Upper Panel B ). Green line indicates delineated the outlines of the outer echolucent stripe of esophageal muscle (Lower Panel B ).
Figure 2. 3-dimensional esophagus and left atrium image created by the CARTO system. Panel A: posterior view; Panel B: left lateral view. LA=left atrium; LSPV=left superior pulmonary vein; LIPV=left inferior pulmonary vein; RSPV=right superior pulmonary vein; RIPV=right inferior pulmonary vein
Figure 3. Esophagus image combined fluoroscopy and CARTO3 system map by using Carto UNIVUTM module. 3D esophagus image can completely cover the fluoroscopic esophagus image
Figure 4. Left atrial (LA) posterior wall thickness at 4 height levels and LA roof thickness. See the text for discussion. LSPV=left superior pulmonary vein; LIPV=left inferior pulmonary vein