In the last few years fetal magnetic resonance imaging (MRI) has been proposed as a second level technique in the evaluation of fetal brain anomalies. It has been demonstrated that MRI is highly accurate in illustrating the morphologic changes of developing brain and fetal brain abnormalities being a useful procedure when ultrasonography is inconclusive or doubtful. Starting from the 19-20 weeks gestational age (GA), MRI can reliably depict fetal brain anatomy and locating pathology, offering a robust and reliable tool in the assessment of fetal CNS diseases. In this review both in vivo MRI quantitative and qualitative data about fetal cerebellar development are presented and compared with ultrasonography data. Fetal cerebellar development is gradual, steady, and largely comparable to the development of the supratentorial brain. Archicerebellar (flocculo-nodular lobe) and paleocerebellar (vermis) structures develop first, whereas neocerebellum (cerebellar hemispheres) develop slowly and largely after birth.

译文

:在最近几年中,胎儿磁共振成像(MRI)已被提出作为评估胎儿脑异常的第二级技术。已经证明,当超声检查不确定或值得怀疑时,MRI可以高度准确地说明发育中的大脑和胎儿脑部异常的形态变化,这是一种有用的方法。从19-20周胎龄(GA)开始,MRI可以可靠地描绘胎儿的大脑解剖结构和定位病理,从而为评估胎儿CNS疾病提供了强大而可靠的工具。在这篇综述中,提出了关于胎儿小脑发育的体内MRI定量和定性数据,并将其与超声检查数据进行了比较。胎儿小脑发育是渐进的,稳定的,并且在很大程度上可与上脑上脑的发育相媲美。先生小脑(结节状结节状)和小脑((状)结构,而新小脑(小脑半球)出生后缓慢且大部分发育。

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