[Retracted] Application of Color Doppler Ultrasound Combined with Magnetic Resonance Imaging in Placenta Accreta

Table 1

Value analysis of color Doppler ultrasonography in the diagnosis of placenta accreta.

3D ultrasound	Gold standard		Coincidence rate (%)	Kappa value
	Positive	Negative
Positive	42	10	71.91	0.410
Negative	15	22