胎儿脑超声异常的MR影像诊断价值  

The value of MR imaging diagnosis of fetal cerebral ultrasound abnormity

作　　者：逄利博 陈刚[1] 杨露露 朱硕 翟敬芳[1] PANG Li-bo;CHEN Gang;YANG Lu-lu

机构地区：[1]徐州市中心医院影像科CT/MR室

出　　处：《中国产前诊断杂志（电子版）》2019年第3期23-27,共5页Chinese Journal of Prenatal Diagnosis(Electronic Version)

摘　　要：目的通过胎儿超声头部异常及可疑异常的病例的MR成像分析,探讨MR成像对胎儿头部异常诊断的临床意义。方法胎儿头部超声诊断异常或可疑异常的单胎孕妇70例,在1周内行MR成像检查。采用1.5T MR 2D FIESTA、2D Balance FFE序列,胎儿头部横断面、冠状面、矢状面扫描。对比MR与超声诊断分为符合、部分符合、补充及更正信息。结果MR符合超声诊断33例,单侧脑室扩张15例,双侧脑室扩张7例,后颅窝池增宽9例,前脑无裂畸形1例,小脑发育不良1例。部分符合诊断3例,超声示小脑后颅窝池稍宽、小脑蚓部不清3例,MR显示后颅窝池稍宽。补充诊断24例,超声示侧脑室扩张16例、后颅窝池增宽4例、颅内未见异常4例,MR补充有胼胝体及小脑蚓部发育不良、透明隔及后颅窝增宽、侧脑室扩张等。更正诊断10例,超声示颅内囊肿4例、脉络丛囊肿2例等,MR诊断更正为侧脑室前角囊肿、透明隔增宽、5脑室、双侧脑室扩张等。结论MR对胎儿头部结构异常的显示优于超声,对超声结果除具有符合及部分符合信息诊断外,更具有准确补充及更正超声诊断的重要临床意义。Objective To through MR imaging analysis of fetal ultrasound cases of cerebral abnormity and doubtful abnormity,investigate clinical value of MR imaging diagnosis of fetal cerebral abnormity.Method 70 cases of single pregnancy of cerebral abnormity and doubtful abnormity by fetal ultrasound,to progress MR imaging in one week。To use 1.5T MR 2D FIESTA、2D Balance FFE sequence,scan transverse、coronal、sagittal plane of fetal head.Contrast MR and ultrasonic diagnosis for,overall coincidence、partial coincidence、supplemental information and correction information.Results Overall coincidence 33 cases of MR diagnosis,15 cases of half lateral cerebral ventricle dilation,7 cases of both lateral cerebral ventricle dilation,9 cases of posterior cranial fossa widen,1 case of holoprosencephaly,1 case of cerebellum dysplasia.Partial coincidence 3 cases ultrasound show cerebellum posterior cranial fossa slightly widen、worm of cerebellum unclear,MR show cerebellum posterior cranial fossa slightly widen.Supplemental information 24 cases,ultrasound show 16 cases of lateral cerebral ventricle dilation,4 cases of posterior cranial fossa widen,4 cases of intracal no abnormality seen,MR supply callosum and worm of cerebellum to dysplasia、pellucid septum and posterior cranial fossa to widen、lateral cerebral ventricle dilation and so on.Correction information 10 cases,ultrasound show 4 cases of intracal cyst,2 cases of choroid plexus cyst and so on,MR diagnosis correct to anterior horn of lateral ventricle cyst、pellucid septum widen、fifth cerebral ventricle、both lateral cerebral ventricle dilation and so on.Conclusions MR surpass ultrasound to show on fetal cerebral abnormity,besides overall coincidence and partial coincidence information of ultrasound result,furthermore exactly possess important clinical significance to supply and correct ultrasound diagnosis.

关 键 词：胎儿头部异常 磁共振成像 产前超声 

分 类 号：R445.1[医药卫生—影像医学与核医学]