临床医学工程2025，Vol.32Issue(3)：333-336,4.DOI:10.3969/j.issn.1674-4659.2025.03.0333
MRI诊断前置胎盘伴胎盘植入的临床价值及影像学特征分析
Analysis on the Clinical Value and Imaging Features of MRI in the Diagnosis of Placenta Previa Complicated with Placenta Accreta
摘要
Abstract
Objective To analyze the clinical value and imaging features of magnetic resonance imaging(MRI)in the diagnosis of placenta previa complicated with placenta accreta.Methods The clinical data and MRI examination data of 80 patients with placenta previa admitted to our hospital from June 2021 to October 2024 were collected.All cases were divided into the placenta accreta group and non-placenta accreta group according to the presence of placenta accreta.The diagnostic value of MRI for placenta previa complicated with placenta accreta was observed,the diagnostic efficacy of different MRI sequences for placenta previa complicated with placenta accreta was compared,and the MRI imaging features of the two groups were compared.Results Postoperative pathology confirmed that among 80 patients with placenta previa,54 cases were complicated with placenta accreta and 26 cases were without placenta accreta.The proportions of≥2 cesarean sections and history of induced abortion in the placenta accreta group were higher than those of the non-placenta accreta group(P<0.05).The accuracy of MRI in the diagnosis of placenta previa complicated with placenta accreta was 93.75%,and the consistency with postoperative pathology was good(Kappa value=0.873,P<0.001).The sensitivity and accuracy of T2WI combined with DWI sequence in diagnosing placenta previa complicated with placenta accreta were higher than those of single sequence of T2WI and DWI(P<0.05).The proportions of low signal bands in the placenta of T2WI sequence,interruption of low signal continuity in uterine muscle layer,and changes in bladder morphology or local dilation of the uterus in the placenta accreta group were higher than those of the non-placenta accreta group(P<0.05).Conclusions MRI shows good consistency with pathological results in the diagnosis of placenta previa complicated with placenta accreta,and the efficacy of combined multi-sequence diagnosis is higher than that of single sequence.Low signal bands in the placenta of T2WI sequence,interruption of low signal continuity in uterine muscle layer,and changes in bladder morphology or local dilation of the uterus are the main imaging features of MRI in the diagnosis of placenta previa complicated with placenta accreta.关键词
磁共振成像/前置胎盘/胎盘植入/诊断价值/影像学特征Key words
Magnetic resonance imaging/Placenta previa/Placenta accreta/Diagnostic value/Imaging feature分类
临床医学引用本文复制引用
梅琪,王雷..MRI诊断前置胎盘伴胎盘植入的临床价值及影像学特征分析[J].临床医学工程,2025,32(3):333-336,4.基金项目
蚌埠医科大学自然科学重点科技项目(项目编号:2023byzd120) （项目编号:2023byzd120）
