小脑萎缩的临床CT诊断

报告手术证实小脑萎缩110例,主要CT表现为小脑半球及(或)蚓部脑沟增多,增宽及不同程度第四脑室、桥前池、桥小脑角池、环池及小脑上池扩大。建议采用后颅窝薄层扫描以减少或避免后颅窝伪影干扰。提出小脑半球或蚓部脑沟在2条以上,小脑半球脑沟宽度超过1mm,蚓部脑沟宽度超过2mm,并有相应的小脑症状及体征,即可诊为小脑萎缩。还讨论了小脑萎缩的原因及其CT表现。

Clinical CT Diagnosis of Cerebellar Atrophy

110 eases of patients with cerebellar atrophy confirmed by operation were reported. 67 cases of male, 43 cases of female, 4-62 years old (mean 42.5 years). Duration of disease was 10 mouths-25years (mean 6. 2 years). Main CT manifestations were widen and deepen of sulci in cerebellar hemisphere and ver-mis, extension of fourth ventricle,frontpontile cistern ,pontocerebellar cistirn,ambient cistern and superior ce-bellar space. Thin slice scan of posterior fossa was recommended to prevent intervention of false image. >2 of number of sulci in cerebellarhemispher or vermis,>1 mm of wide of cerebellar hemisphere sulci, >2mm of wide of vermis sulci with responsible cerebellar symptoms and signs would be diagnosed cerebellar atrophy. Authors discussed pathogenesis and CT mainfestations of cerebellar atrophy also.