Fig. 2From: Ultrasonographic assessment of preoperative gastric volume in patients with dyspepsia: a prospective observational studyROC curve of gastric antrum CSA in patients with FD. Receiver operating characteristic curves for the detection of a gastric volume greater than 0.8 ml/kg by the measurement of antral area in the RLD positions. AUC = area under the receiver operating characteristic curve with 95% confidence interval. P = 0.0001Back to article page