Homogeneity Parameter in Contrast-Enhanced Ultrasound Imaging Improves the Classification of Abnormal Cervical Lymph Node after Thyroidectomy in Patients with Papillary Thyroid Carcinoma

Table 4

ROC analyses for the characteristics in prediction of CLNM from patients with PTCs.

Overall (n = 86)	Az	95% CI	Sen (%)	Spe (%)	PPV (%)	NPV (%)	Accuracy (%)
Cystic change or calcification	0.645	0.568–0.722	35.2	93.8	90.5	46.2	57.0
CDFI patterns	0.689	0.582–0.797	70.4	62.5	76.0	55.6	67.4
Intensity at peak time	0.733	0.634–0.832	77.8	68.8	80.8	64.7	74.4
Homogeneity	0.845	0.767–0.923	81.5	87.5	91.6	73.7	83.7
US	0.746	0.647–0.848	83.3	56.2	74.1	56.2	67.4
CEUS	0.895	0.838–0.952	64.8	100.0	100	62.7	77.9
Predictive equation	0.936	0.885–0.986	87.0	87.5	92.2	80.0	87.2