Table 5.

The performance of ADC histogram parameters for differentiating patients with and without lymph node metastasis

Parameters	Cutoff valuea	Sensitivity	Specificity	Accuracy	AUC	95% CI
ADCmean	1666.25	0.778	0.710	0.763	0.772	0.652–0.891
ADCmin	649.50	0.667	0.742	0.684	0.737	0.618–0.856
ADCmax	3531.00	0.484	0.833	0.563	0.656	0.523–0.789
ADC5%	1213.50	0.722	0.839	0.748	0.785	0.663–0.907
ADC10%	1293.00	0.722	0.806	0.741	0.794	0.677–0.911
ADC25%	1424.50	0.778	0.258	0.661	0.791	0.673–0.909
ADC50%	1539.00	0.889	0.597	0.823	0.776	0.662–0.891
ADC75%	1842.50	0.778	0.661	0.752	0.747	0.627–0.867
ADC90%	2171.50	0.778	0.710	0.763	0.732	0.606–0.858

ADC apparent diffusion coefficient, AUC area under the receiver operating characteristic curve

^athe cutoff values of the ADC histogram parameters were calculated by using the Youden index; CI, confidence interval