Table 1.

Comparison of positive rates of abdominal ultrasonography and vaginal three-dimensional color Doppler ultrasonography.

Abdominal ultrasound	Gold standard		Vaginal 3D color Doppler ultrasound	Gold standard
	Positive	Negative		Positive	Negative
Positive	52	21	Positive	81	14
Negative	36	41	Negative	7	48
Total	88	62		88	62