两种MRI快速成像序列在胎盘植入诊断中的应用

发布时间：2018-04-11 15:35

本文选题：胎盘 + 侵入性　；参考：《中国医学影像学杂志》2015年11期

【摘要】：目的胎盘植入是妊娠少见的严重并发症,影像诊断较困难,本文旨在探讨胎盘植入MRI扫描中相对理想的快速成像序列,为影像诊断提供优质图像。资料与方法回顾性分析经手术病理证实为胎盘植入的21例孕妇的MRI图像,患者分别行二维快速稳态进动序列(2D-FIESTA)和单次激发快速自旋回波序列(SSFSE)扫描,比较两种序列扫描的图像优良率及MRI表现。结果 2D-FIESTA序列及SSFSE序列的胎盘图像优良率分别为71.4%(15/21)、38.1%(8/21),差异有统计学意义(χ~2=4.790,P0.05)。2D-FIESTA序列及SSFSE序列对胎盘信号不均匀、胎盘内条状低信号影、胎盘内增多增粗的血管影、子宫结合带中断、胎盘突入子宫肌层、胎盘突出子宫浆膜层各征象的显示率分别为57.1%、57.1%、28.6%、61.9%、66.7%、14.2%及90.4%、71.4%、38.1%、42.9%、28.6%、6.5%,两序列对胎盘信号不均匀及胎盘突入子宫肌层的显示率比较,差异有统计学意义(χ~2=4.560、6.109,P0.05)。结论 2D-FIESTA序列对胎盘子宫的分界显示较好,SSFSE序列对胎盘对比度的显示较好,两者结合能提高MRI对胎盘植入的诊断价值。
[Abstract]:Objective placenta accreta is a rare serious complication of pregnancy, and the imaging diagnosis is difficult. The purpose of this paper is to study the relatively ideal fast imaging sequence in MRI scanning of placenta accreta, and to provide high quality image for the diagnosis of placenta accreta.Materials and methods the MRI images of 21 pregnant women with placenta accreta proved by surgery and pathology were retrospectively analyzed. The patients were scanned by 2D fast steady-state precession sequence (2D-FIESTA) and single-shot fast spin echo sequence (SSFSE).The excellent and good rate and MRI performance of the two sequences were compared.Conclusion the 2D-FIESTA sequence can display the placental uterine boundary better. The combination of the two sequences can improve the diagnostic value of MRI in placental accreta.
【作者单位】：成都市第二人民医院影像科;昆明医科大学第一附属医院影像科;
【分类号】：R445.2;R714.462

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