羊水过少时胎儿畸形的磁共振诊断价值

董素贞; 朱铭; 毛建平; 钟玉敏; 顾晓红

中国临床医学影像杂志 ›› 2008, Vol. 19 ›› Issue (1) : 51-55.

论著

羊水过少时胎儿畸形的磁共振诊断价值

董素贞1，朱铭1，毛建平2，钟玉敏1，顾晓红1

作者信息 +

Diagnosis of abnormalities of fetus with oligohydramnios by MRI

DONG Su-zhen1, ZHU Ming1, MAO Jian-ping2, ZHONG Yu-min1, GU Xiao-hong1

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文章历史 +

摘要

目的：评价磁共振成像（MRI）对羊水过少时胎儿畸形的诊断价值。方法：回顾性分析18例超声筛查出羊水过少胎儿的MRI，并将超声、MRI结果与引产后或出生后随访结果对照。通过MRI采用感兴趣区工具（ROI）测量胎儿肺肝信号强度比（LLSIR），采用t检验进行统计学分析。结果：18例羊水过少胎儿MRI均能清晰显示其结构，泌尿系统畸形13例（其中同时伴肺发育不良6例、同时伴肺发育不良和心脏畸形2例、人体鱼序列征1例、中枢神经系统畸形1例、单脐动脉1例），腹腔囊肿2例，中枢神经系统畸形1例，2例胎儿无明显畸形。除3例引产未尸检外，其余MRI结果均由出生或引产后结果证实。结论：MRI是羊水过少时胎儿畸形有效的影像诊断方法，它能明确诊断羊水过少时的胎儿肾脏及肺异常，发挥超声的重要补充作用，尤其是超声显示不清时。

Abstract

Objective: To evaluate the value of MRI on abnormalities of fetus with oligohydramnios. Methods: The prenatal MR images of 18 women with oligohydramnios diagnosed at US were analyzed retrospectively and compared with prenatal ultrasounds or autopsy or postnatal follow-up imaging examinations. Calculation of the ratio of lung signal intensity to liver signal intensity(LLSIR) was performed on MR images by using region-of-interest analysis. t test was performed. Results: MRI can clearly display all normal structures and abnormalities of 18 fetuses with oligohydramnios. The abnormalities of 18 fetuses with oligohydramnios included genitourinary anomaly(n=13), cystic abdominal mass (n=2), central nervous system abnormality(n=1), normal fetus(n=2). The anomalies of 13 fetuses with genitourinary anomaly associated with pulmonary hypoplasia(n=6), cardiac anomaly complicated with pulmonary hypoplasia(n=2), sirenomelia sequence (n=1), central nervous system abnormality(n=1), single umbilical artery(n=1). MRI findings were confirmed in 15 of the 18 fetuses at autopsy or postnatal follow-up; no follow-up data were available for the other 3 fetuses. Conclusion: Prenatal MRI is effective in the assessment of anomalies of fetuses with oligohydramnios. It can accurately diagnose abnormalities of fetus kidneys and fetus lungs with oligohydramnios and is a useful complementary tool to US, particularly in cases with inconclusive sonographic findings.

导出引用

董素贞;朱铭;毛建平;钟玉敏;顾晓红. 羊水过少时胎儿畸形的磁共振诊断价值[J]. 中国临床医学影像杂志. 2008, 19(1): 51-55

DONG Su-zhen;ZHU Ming;MAO Jian-ping;ZHONG Yu-min;GU Xiao-hong. Diagnosis of abnormalities of fetus with oligohydramnios by MRI[J]. Journal of China Clinic Medical Imaging. 2008, 19(1): 51-55

中图分类号： Ｒ714.53 Ｒ445.2