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| Value of Color Doppler Ultrasonography and MRI in the Diagnosis of Placental Implantation |
| SU Wen-hui, LIU Qun, LV Fu-ying, et al |
| Department of Ultrasonography , Heze Second People's Hospital, Heze Shandong 274000, China |
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Abstract 【Objective】 To evaluate the diagnostic value of color Doppler ultrasound (CDUs) and magnetic resonance imaging (MRI) in placenta accreta.【Methods】 From July 2012 to June 2017, the data of color Doppler ultrasound and MRI of 100 cases clinically diagnosed as placenta accreta in Heze second people's Hospital were analyzed retrospectively. The results were compared with the clinical and pathological findings to analyze the diagnostic value of two methods in placenta accreta.【Results】 The clinical and pathological findings showed 64 cases of placenta accreta, 28 cases of posterior wall implantation and 36 cases of anterior wall implantation ; 36 cases were non-placental accreta. 86 cases were diagnosed by color Doppler ultrasound (see figure 1a), 4 cases were misdiagnosed . The kappa values of the two kinds of examinations compared with the clinical and pathological results were 0.707 and 0.733 ,which were greater than 0.7, respectively. The two kinds of examinations were highly consistent with the pathological diagnosis. The sensitivity and specificity of color Doppler ultrasound were 84.38% (54/64) 88.89% (32/36) respectively, and there was no significant difference compared with MRI 93.75% (60/64) 77.78% (28/36) (P>0.05). In the placenta accreta of anterior wall, color Doppler ultrasound showed abundant blood flow signal after placenta, the proportion was 83.33%, significantly more than 61.11% of MRI , the difference was statistically significant (P<0.05).In the posterior wall placenta accreta, MRI showed that the posterior placental space disappeared, and undefined ratio of placenta to uterus was 92.86% and 85.71%, which was significantly higher than that of 67.86% and 60.71 % of color Doppler ultrasound,the difference was statistically significant (P<0.05).【Conclusion】 The diagnostic efficacy of color Doppler ultrasound and MRI in placenta accreta is the same. Color Doppler ultrasound has advantages in the diagnosis of anterior wall placenta accrete ,and MRI is superior to color ultrasound in the diagnosis of posterior wall placenta implantation. Therefore, MRI can be used as an important supplement of B ultrasound screening and color ultrasound reexamination.
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Received: 11 June 2018
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2018, Vol. 35 
