The diagnostic value of mri and ultrasonography in adherent placenta
CHEN Fang1, YU Jie1, CHEN Yaomeng1, CHI Xinle1, LIU Jinjin2, CHEN Weijian2
1.Department of Radiology, Wenzhou People’s Hospital, the Third Clinical Institute Affiliated to Wenzhou Medical University, Wenzhou, 325000; 2.Department of Radiology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325015
CHEN Fang,YU Jie,CHEN Yaomeng, et al. The diagnostic value of mri and ultrasonography in adherent placenta[J]. JOURNAL OF WEZHOU MEDICAL UNIVERSITY, 2017, 47(7): 500-503.
Abstract：Objective: To analyze the diagnostic value of MRI and ultrasonography in adherent placenta, and to investigate the advantages and disadvantages of two kinds of examination methods for this disease. Methods: A total of 134 patients suspected as placenta implantation abnormality underwent MRI and ultrasonography. The diagnostic value of MRI and ultrasonography in adherent placenta were evaluated and compared with intraoperative and postoperative pathology as the diagnostic criteria. Results: In 134 cases who were all undergoing caesarean section, 43 cases were confirmed to be placenta implantation by the intraoperative and postoperative pathology diagnosis. Among them, 24 patients were as adhesion, 17 patients were as implanted and 2 patients were as penetrating. The sensitivity, specificity, correct index, misdiagnosis rate and missed diagnosis rate of adherent placenta diagnosis by MRI were 62.50%, 87.27%, 49.77%, 12.73% and 37.50%, respectively. The indexes above of diagnosis by ultrasound were 25.00%, 89.09%, 14.09%, 10.91% and 75.00%, respectively. There were significant differences between the sensitivity of MRI and ultrasonography (χ2=6.875, P=0.009). Conclusion: Ultrasonography is of high specificity. Its position as the convenient and cheap screening test is irreplaceable. The sensitivity of MRI is higher than that of ultrasonography. And MRI should be regarded as a routine examination of suspected cases.
