Fig. 2

Receiver operation characteristic curve indicated the optimal cutoff value of MRI-multiparameter in evaluating cervical metastasis. a. Area under the curve (AUC) of MRI-assessed tumor thickness cutoff values were a statistically significant difference (P < 0.05); aTT cutoff value as 8.5 mm was 0.895 (blue line), AUC of cTT cutoff value as 11 mm was 0.867 (green line) and AUC of sTT cutoff value as 12 mm was 0.916 (yellow line). The cutoff for sTT curve being the most significantly different. b. Paralingual distance (PLD) and sublingual distance (SLD) cutoff values were 5 mm (AUC = 0.759) and 4 mm (AUC = 0.616), respectively