Fig. 2

ROC curve of MD and FA of malignant versus benign LNs. A The cutoff value of MD utilized to distinguish malignant from benign LNs is 0.94 × 10^–3 mm²/s with AUC of 0.892, an accuracy of 84%, specificity of 88.9%, and sensitivity of 81.2%. B The cutoff value of FA applied to distinguish malignant from benign LNs is 0.21 with an AUC 0.758, an accuracy 71%, specificity 50%, and sensitivity 82.8%. C Combined parameters show AUC 0.914, with an accuracy 81%, specificity 77.8%, and sensitivity 92.2%