Shear wave elastography versus strain elastography to identify benign superficial lymph nodes: sonographic assessment with histopathological confirmation

Egyptian Journal of Radiology and Nuclear Medicine

Table 4 Diagnostic performance of SE scales and ARFI at cut-off value of 2.7 m/sec

	Benign (n = 37)		Malignant (n = 78)		p	Sensitivity	Specificity	PPV	NPV	Accuracy
	No	%	No	%	p	Sensitivity	Specificity	PPV	NPV	Accuracy
Elastography score
(1,2)	27	73	20	25.6	< 0.001^*	74.4	73	85.3	57.4	73.9
(3,4)	10	27	58	74.4	< 0.001^*	74.4	73	85.3	57.4	73.9
ARFI
≤ 2.7	33	89.2	9	11.5	< 0.001^*	88.5	89.2	94.5	78.6	88.7
> 2.7	4	10.8	69	88.5	< 0.001^*	88.5	89.2	94.5	78.6	88.7