CT对小脑梗塞的诊断及临床意义

Diagnostic and clinical value of CT for cerebellum infarction

目的探讨小脑梗塞的CT表现、诊断价值和临床意义。方法回顾性分析17例小脑梗塞的临床和CT表现。结果小脑血供来源于小脑后下动脉、小脑前下动脉及小脑上动脉,其梗塞分别占52.9%(9/17)、35.3%(6/17)、11.8%(2/17)。(1)低密度影:平扫时小脑半球的低密度影呈椭圆形或不规则形,边缘多清晰,无或少有水肿带,在8例小脑梗塞增强时,低密度不增强,有5例低密度区周围呈环状或脑回状强化,以及周围有广泛侧支循环血管影。(2)血管征:本组仅出现3例,CT平扫见桥脑小脑间隙处一个长条环状血管影。增强时,其阻塞血管明显增粗、致密强化,这是诊断小脑前下动脉梗塞的可靠依据。结论CT对小脑梗塞能及时诊断,为临床治疗提供重要依据。

ObjectiveTo investigate CT features of cerebellum infarction. Methods17 cases of cerebellum infarctionwere analyzed retrospectively.ResultsCerebellar vascularity came from posterior inferior, anterior inferior and superior cerebel-lar arteries, which infarcts rate were 52.9%, 35.3%, 11.8% respectively. (1) During the low field CT plain scan: the shadow ofcerebellar hemisphere was oval or irregular, none or less edematous line. for 8 Enhanced CT, were performed patients the low densitywas not enhanced. 5 cases of low density field surrounding were enhanced. (2) Blood vessel sign: 3 cases of 8 had a long circulate sinusin the pontocerebellar space, when CT plain scan were enhanced, the infarctional vessel obviously became thicken, which was reliablefor diagnosis of anterior cerebellar artery infrct. Conclusions CT is very important to diagnosis and treatment of celebelluminfarction.