. 2016 Oct 19;5(6):724–730. doi: 10.3892/mco.2016.1053

Table V.

Performance comparison among 2DUS, SWE, CEUS and their combined use in the diagnosis of benign and malignant thyroid nodules (%).

		Pathological result

Method	Type	Benign	Malignant	Sensitivity	Specificity	PPV	NPV	Accuracy
2DUS	Benign	141	39	71.32	77.04	69.78	78.33	74.60
	Malignant	42	97
SWE	Benign	154	21	84.55^a	84.15^a	79.86^a	88.00^a	84.32^a
	Malignant	29	115
CEUS	Benign	158	17	87.5^a	86.33^a	82.63^a	90.28^a	86.83^a
	Malignant	25	119
SWE+CEUS	Benign^▼	170	9	93.38^a,b	92.89^a,b	90.71^a,b	94.97^a,b	93.10^a,b
	Malignant●	13	127

Compared with conventional 2DUS, P<0.05.

Compared with SWE and CEUS, P<0.05. ▼, positive results for one or both methods; ●, negative results for both methods; SWE, shear wave elastography; CEUS, contrast-enhanced ultrasound; 2DUS, two-dimensional ultrasound; PPV, positive predictive value; NPV, negative predictive value.