Fig. 1From: Effect of preoperative oral rehydration before cesarean section on ultrasound assessment of gastric volume and intraoperative hemodynamic changes: a randomized controlled trialUltrasonographic image of the gastric antrumThe figure demonstrates two perpendicular diameters, line 1 and line 2, for cross-sectional area of the stomach antrumLine 1: Craniocaudal antral diameterLine 2: Anteroposterior antral diameterL, liver; F, fetal headBack to article page