小脑梗死因发病急,临床表现复杂,缺乏特异的症状和体征,又容易被继发的脑干损害症状所掩盖,临床容易发生误诊。CT检查于骨边缘处可出现条纹状伪影,严重影响后颅凹的检查质量和对病变的诊断。核磁共振(MRI)无上述缺点,对后颅窝结构显示十分清晰。又由于MRI显示脑梗死早于CT,所以MRI在小脑梗 Due to acute onset of acute cerebrovascular disease, the clinical manifestations of complex, the lack of specific symptoms and signs, but also easily covered by secondary brain stem damage symptoms, clinically prone to misdiagnosis. CT examination at the edge of the bone may appear streaky artifacts, seriously affecting the quality of posterior fossa and lesions of the diagnosis. Magnetic resonance imaging (MRI) without the above shortcomings, the posterior fossa structure is very clear. And because MRI showed cerebral infarction earlier than CT, MRI in the cerebellar infarction