The Value of Contrast-Enhanced Ultrasound in the Diagnosis of Cesarean Scar Pregnancy

Table 1

Comparison of two diagnostic methods (%).

	Sensitivity	Specificity	Positive predictive value	Negative predictive value	Youden index	Diagnosis rate
Conventional ultrasound	80.8	87.5	89.4	77.8	68.3	83.7
CEUS	100.0	95.0	96.3	100.0	95.0	97.8
	3.519	1.198	1.339	3.586	3.216	1.962
	<0.001	0.231	0.181	<0.001	0.001	0.050

CEUS: contrast-enhanced ultrasound; CSP: cesarean scar pregnancy.
CEUS was significantly better than conventional ultrasound with regard to sensitivity, negative predictive value, Youden index, and diagnosis rate for CSP ().