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