Objective: To investigate the imaging characteristics and diagnostic value of magnetic resonance imaging (MRI) for postpartum placenta implantation. Methods: Fifty-two patients with suspicious postpartum placenta implantation receiving MRI examination were enrolled. The imaging findings on MRI were analyzed in correlation with the clinical and pathological data, and diagnostic performance was calculated. Results: Of the 53 cases, 35 cases were diagnosed as placenta implantation by surgery or pathologic examination, and of them 31 were diagnosed by MRI, with a sensitivity of 88.57%, and specificity of 88.24%. The main MRI feature was placenta-myometrium interface disappearance with a diagnostic sensitivity of 91.43%. And secondly, myometrium was thinned and placenta signal was uneven(sensitivity 74.29% and 68.57%). The sensitivity and specificity of enhanced MRI examination for diagnosing postpartum placenta implantation were 54.29% and 100% respectively. Four cases of retained placenta diagnosed by preoperative MRI were confirmed to be placenta implantation by pathological examination after surgery, While 2 cases of retained placenta were misdiagnosed as placenta implantation by preoperative MRI. Conclusions: MRI is valuable for diagnosing postpartum placenta implantation. For patients with postpartum recovery time less than 4 weeks, enhanced MRI scan is recommended.
SU Ming, ZHANG Jijun, LING Huawei, ZHANG Jian, DING Bei, LU Fei, LIU Yan
. Diagnostic value of MRI for postpartum placenta implantation[J]. Journal of Diagnostics Concepts & Practice, 2017
, 16(05)
: 527
-531
.
DOI: 10.16150/j.1671-2870.2017.05.014
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