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目的:探讨磁共振成像(MRI)在超声提示脑室扩张胎儿产前诊断中的作用。方法:选择因超声提示单纯性脑室扩张而行MRI检查者,对MRI结果进行分析并随访妊娠结局。结果:1 MRI结果的准确性:入组病例MRI对超声的总补充诊断率为15.4%(38/247),其中脑积水11例,脑室扩张伴脑出血3例,脑室扩张伴胼胝体发育不全(ACC)9例,室管膜下囊肿(或蛛网膜囊肿)9例,DandyWalker等其他类型畸形6例。2胎儿脑室扩张的宫内转归及新生儿预后:63.2%(24/38)有结构畸形者选择引产,均未见染色体核型异常。正常分娩新生儿155例,新生儿随访无异常神经系统表现。结论:对于脑室扩张,尤其是重度脑室扩张,MRI对于超声有极高的补充诊断价值。
Objective: To investigate the role of magnetic resonance imaging (MRI) in prenatal diagnosis of fetal dilated fetuses by ultrasound. Methods: The patients who underwent MRI examination by simple ventricular dilatation by ultrasound were analyzed, and the results of MRI were analyzed and the pregnancy outcome was followed up. Results: (1) The accuracy of MRI results: The total diagnostic rate of MRI in 15 cases was 15.4% (38/247), including 11 cases of hydrocephalus, 3 cases of ventricular dilatation and cerebral hemorrhage, dilatation of ventricles and hypoplasia of corpus callosum (ACC) in 9 cases, subependymal cyst (or arachnoid cyst) in 9 cases, Dandy Walker and other types of deformities in 6 cases. 2 Fetal ventricular dilatation of the intrauterine metastasis and neonatal prognosis: 63.2% (24/38) have structural deformity were induced abortion, no chromosomal abnormalities were seen. 155 cases of normal childbirth newborns, neonatal follow-up no abnormalities in the performance of the nervous system. Conclusion: For ventricular dilatation, especially for severe ventricular dilatation, MRI has a very high value for the diagnosis of ultrasound.