Figure 2

ROC curve of the PET/CT parameters to detect submucosal invasion in esophageal superficial squamous cell carcinoma. (a) Diagnostic performance of the maximal standardized uptake value (SUVmax). Area under the curve (AUC), 0.673; cutoff level, 3.472; sensitivity, 50.0%; specificity, 86.2%; accuracy, 69.8%. (b) Diagnostic performance of total lesion glycolysis (TLG). AUC, 0.665; cutoff level, 0.663. (c) Diagnostic performance of metabolic tumor volume (MTV). AUC, 0.657; cutoff level, 0.398.