摘要
目的探讨MRI在胎儿消化系统发育异常方面的应用价值。资料与方法对10例孕20周以上超声提示存在消化系统发育异常的胎儿行MR检查。采用单次激发快速自旋回波序列(SSFSE),选择胎儿头颅、躯干的常规体位,并重点行胎儿躯干横断位、冠状位、矢状位扫描,将产前MR表现与引产后尸体解剖结果相对照。结果 10例消化系统发育异常胎儿中,先天性小肠闭锁2例;引产后尸检证实闭锁部位分别为空肠近段和回肠中段,后者同时合并胎儿腹腔积液,SSFSE上见扩张肠管以高信号为主;先天性肛门闭锁5例,SSFSE上扩张肠管内可见低信号胎粪;膈疝2例,均位于左侧,疝入物1例为胃腔、1例为部分肠管,MR图像上表现为高信号胃腔、肠管上升至心脏水平;腹部包块1例,引产后证实为先天性肠系膜囊肿,表现为腹腔内高信号囊性包块。结论 MRI在胎儿消化系统发育异常方面具有一定的诊断价值。
Objective To explore the diagnostic value of MRI in fetal congenital anomaly of gastrointestinal system.Materials and Methods Ten pregnant women with gestation from 20 to 36 weeks with gastrointenstinal system anomalies diagnosed by US received MR imaging,SSFSE sequence was performed in the coronal,sagittal and axial plane of the fetus body and the head.MRI findings were compared with autopsy.Results In these 10 fetuses,2 cases were small bowel atresia confirmed by autopsy,one of the cases was obstructed in the proximal of the jejunum,the another was obstructed in the middle of ileum with ascites,most of the dilated bowel appeared hyperintensity signal;congenital anal atresia in 5 cases,hypointensity meconium was seen in the dilated bowel;diaphragmatic hernia in 2 cases which all were in the left sided,intrathoracic herniated organs in one case was the stomach,another was bowel;abdominal mass in one case,which appeared as hyperintensity signal in the abdomen was congenital mesenteric cyst confirmed by autopsy.Conclusion Prenatal MRI is effective in the assessment of fetal congenital anomaly of gastrointestinal system.
出处
《临床放射学杂志》
CSCD
北大核心
2011年第11期1677-1679,共3页
Journal of Clinical Radiology
关键词
胎儿
消化系统
磁共振成像
Fetus Gastrointestinal system Magnetic resonance imaging
