产前胎盘植入的MRI征象分析

发布时间：2018-05-26 03:46

本文选题：胎盘植入 + 磁共振成像　；参考：《中国医学计算机成像杂志》2017年01期

【摘要】：目的:分析胎盘植入的MRI影像特征,探讨MRI征象对产前胎盘植入的诊断价值。方法:收集41例产前B超怀疑胎盘植入的孕产妇资料,行盆腔MRI扫描。以病理及手术记录作为诊断标准,分为15例无胎盘植入对照组和26例胎盘植入组,分析产前MRI影像征象,比较MRI征象在两组间的差异性。同时测量T2WI上胎盘内低信号灶面积,分析其与胎盘植入类型的相关性。结果:MRI征象主要有:T2WI胎盘内低信号灶、胎盘局部血管增多、膀胱局部幕状突起、子宫局限膨隆。胎盘植入深度与T2WI上胎盘内低信号灶的面积呈相关性。结论:T2WI胎盘内低信号灶对胎盘植入的诊断具有很高应用价值。胎盘局部血管增多对胎盘植入诊断亦有较高价值。子宫局限隆起对胎盘植入具有提示作用。膀胱幕状突起对胎盘穿透具有提示作用。
[Abstract]:Objective: to analyze the MRI imaging features of placenta accreta and to explore the diagnostic value of MRI signs in prenatal placenta accreta. Methods: 41 pregnant and parturient women suspected of placenta accreta by B-ultrasound were examined by pelvic MRI. The pathological and surgical records were used as diagnostic criteria. 15 cases of placenta accreta control group and 26 cases of placenta accreta group were divided into two groups. The antepartum MRI imaging signs were analyzed and the difference of MRI signs between the two groups was compared. At the same time, the area of hypointensity in placenta on T2WI was measured, and the correlation between placenta accreta type and placental accreta was analyzed. Results the main signs of Mr imaging were hypointensity in the placenta on T2WI, increased local blood vessels in the placenta, local tentorial protuberance of the bladder, and limited expansion of the uterus. There was a correlation between the depth of placenta accreta and the area of hypointensity in placenta on T2WI. Conclusion the hypointensity focus on T 2 WI is valuable in the diagnosis of placenta accreta. Placental angiogenesis is also valuable in the diagnosis of placental accreta. The localized protuberance of the uterus may indicate the placenta accreta. The vesical tentorial protrusions are indicative of placental penetration.
【作者单位】：广西科技大学第一附属医院放射科;广西科技大学第一附属医院妇产科;
【分类号】：R445.2;R714.2

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