小脑半球脑梗塞的MR诊断

Infarction of the Cerebellum Dignosis by MRI

目的 分析小脑半球脑梗塞的MR表现 ,明确诊断 ,指导临床治疗。方法 2 0例 ,行MR矢、冠、轴位扫描 ,部分病例行增强扫描 ,并行治疗后复查 ,观察其MRI表现。结果 ①由于小脑半球的供血来源不同 ,可出现小脑上动脉供血区 ,小脑前下动脉供血区 ,及小脑后下动脉供血区脑梗塞 ,其中后者最常见 ;②于MR矢、冠、轴位像上可清楚看到病灶的边界 ;③MR上表现为长T1,长T2 沿血管分布区异常信号 ,经临床治疗后 ,复查可见病灶缩小 ;④小脑半球脑梗塞可伴有其他部位脑梗塞。结论 MR对小脑半球脑梗塞的影像表现较CT优越 ,观察清楚 ,诊断明确 。

Purpose Analyzed the MR appearance of infarction of cerebllum,for dignosis and to directive clinic treatment. Methods 20 cases of the infarction of cerebllum,examed by MR with axial,coronal,and sigital scan.Some of them with contrast enhancement.After a period of clinical treatment,followed by MR examination,in order to observe the effect of therapy. Results ①Due to different part of the cerebellar blood supply come from different artery distribution,so the different location of the cerebllar infarction could be seen.such as,the part of superior cerebllar artery distribution,the part of anterior inferior cerebellar artery blood supply,the region of posterior inferior cerebellar artery blood supply,and so on;②the lesion is clearly margin on MR imaging appearance;③high signal on T 2 and low signal on T 1 associated with the blood supply of artery distribution;④besides cerebellar infarction,there is other part of the brain ischemia. Conclusion For dignosis the infarction of cerebellum,MR imaging is advantage than CT scan,and clearly show on MRI.Correct dignosis is not difficulty.After the clinical treatment,the effect could be clearly shown on MRI. [