Comparison of Color Doppler Ultrasound and MRI Prenatal Diagnosis of Placenta Accreta Value

ZENG Chun-lian; WANG Hai-yu; HUANG Dan-ping

Abstract：Objective:To evaluate the diagnostic value of color Doppler prenatal ultrasound and magnetic resonance(MRI) imaging of placenta accreta. Method:Selecting 2011-2013 in the hospital at the same time for prenatal color Doppler ultrasound and magnetic resonance imaging were performed in 35 patients suspected of placenta accreta postpartum patients,diagnosed by pathological examination,reliability and to compare the difference between two methods for the diagnosis of placenta accreta;summary of placenta implantation image characteristics of color doppler ultrasound and magnetic resonance imaging.Result:35 cases of suspected patients with pathologically confirmed placenta implanted 12 patients;ultrasound examinations showed positive in 12 and negative in 23 cases, misdiagnosis 1 case,missed 1 case;MRI examination revealed 11 cases of placenta accreta positive ,negative 24 cases,misdiagnosis 1 case,missed 2 cases. Statistical analysis showed that ultrasound and MRI Kappa values were 0.87 and 0.75 (all>0.4 );compare the two methods,both in the sensitivity,specificity, precision than diagnosing index difference was not statistically significant(P>0.05).Conclusion:Ultrasound and MRI as the main means of clinical prenatal diagnosis of placenta accreta ,its diagnostic value worthy of recognition ,but ultrasound and MRI diagnosis of placenta accreta can not replace each other,should combine their features and characteristics of positive cases found comprehensive diagnosis.