Early gastric dilation after laparoscopic sleeve gastrectomy: Insights from a three-dimensional computed tomography reconstruction study

Figure 3 Gastric volumes measured by three-dimensional computed tomography reconstruction. The morphological indicators of the residual stomach measured included the total sleeve volume, tube volume, antral volume, and tube-to-antral volume ratio, as well as the degree of residual gastric dilation. Total sleeve volume was defined as the total volume of the sleeve portion from the top of the staple line to the pylorus. Tube volume was defined as the volume of the sleeve portion from the top of the staple line to the incisura angularis. Antral volume was defined as the volume of the sleeve portion from the incisura angularis to the pylorus. The degree of residual gastric dilation was computed using the following formula: Degree of residual gastric dilation = [(total stomach volume at 3 months - total stomach volume at 1 month)/total stomach volume at 1 month] × 100. TSV: Total sleeve volume; TV: Tube volume; AV: Antral volume.