Affiliations: Department of Radiology, Xining First People’s Hospital, Xining, Qinghai, China
Correspondence:
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Corresponding author: Xiao-Qin Sun, Department of Radiology, Xining First People’s Hospital, No. 3 Hu Zhu Road, City central District, Xining, Qinghai 810000, China. Tel.: +86 18997053696; E-mail: sunxiaoqindpe@163.com.
Abstract: BACKGROUND: With more pregnant women undergoing cesarean section, the number of women with scarring in the uterus undergoing uterine magnetic resonance (MR) examination in the second and third trimesters following a subsequent pregnancy, has increased. OBJECTIVE: To investigate features of MR signals in retroplacental basal decidual space. METHODS: The MR imaging data of patients with clinically and pathologically confirmed placenta implantation and complete placental abruption were retrospectively analyzed. RESULTS: Patients with high-intensity signals in T2-weighted images (T2WI) of the retroplacental basal decidual space did not suffer placenta implantation after delivery, while high-intensity signals in T2WI of the retroplacental basal decidual space was not observed in patients with different degrees of placenta implantation. CONCLUSION: As the retroplacental basal decidual space is the barrier between the placenta and myometrium, high-intensity signals in T2WI can improve the confidence of MR exclusion diagnostics of placenta implantation, and can be used as exclusion criteria for MR diagnosis of placenta implantation.
Keywords: Decidua basalis, magnetic resonance imaging, placenta implantation
