Abstract：Fetal cerebellar vermis abnormal development can lead to a variety of brain malformations, but also play an important reason for posterior fossa malformation. In recent years, with the rapid development of MR technology and its unique advantages, has become an important supplement to ultrasound, and for the diagnosis of fetal abnormalities vermis provides a new choice. The prenatal ultrasound, fetal MR about normal/abnormal fetal cerebellar vermis and new technology and the appropriate application of clinical research are introduced detailedly in this article.
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