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目的 研究小脑前下动脉(AICA)梗死的临床表现及磁共振成像(MRI)特征。方法 对我院1997年1月～2001年6月4年半间通过磁共振成像(MRI)确诊的19例AICA梗死患者进行临床及MRI观察。结果AICA梗死占同期急性脑梗死的1.47％,占同期小脑梗死22.1％。危险因素与一般缺血性脑卒中午相似,即高血压、高脂血症、糖尿病是其主要的危险因素。所有患者均有眩晕及小脑性共济失调的症状体征;除一名患者外均有颅神经受累,以Ⅷ、Ⅶ、v最多见。第Ⅶ颅神经受累是AIcA梗死的一个特征性改变。AICA梗死预后较好。结论 AICA梗死并非罕见,应提高对AICA梗死临床表现及MRI特征的认识,以降低临床误诊率。
Objective To study the clinical manifestations and magnetic resonance imaging (MRI) features of anterior inferior cerebellar artery (AICA) infarction. Methods The clinical and MRI findings of 19 patients with AICA confirmed by magnetic resonance imaging (MRI) from January 1997 to June 2001 in our hospital were observed. Results AICA infarction accounted for 1.47% of the same period of acute cerebral infarction, accounting for 22.1% of the same period of cerebellar infarction. Risk factors and general ischemic stroke afternoon similar to that hypertension, hyperlipidemia, diabetes is the main risk factor. All patients had vertigo and cerebellar ataxia symptoms and signs; except one patient had cranial nerve involvement, the most common Ⅷ, Ⅶ, v. The ith cranial nerve involvement is a characteristic change in AIcA infarction. AICA infarction better prognosis. Conclusion AICA infarction is not uncommon, and the clinical manifestation and MRI features of AICA infarction should be improved to reduce the clinical misdiagnosis rate.