目的研究脑梗塞患者CT及MRI诊 断的临床特点。方法 选取我院2013年9 月至2014年8月脑梗塞患者84例为研究对 象，分别采取CT及MRI诊断，比较两种检 测方式对不同类型脑梗塞的检出率及不同 发病时间两种检测方式符合率差异。结 果 84例患者MRI总检出78例，占92.9%， 显著高于CT检测符合率66.7%，MRI对缺 血性脑梗塞及腔隙性脑梗塞检出率分别 为93.1%、97.2%显著高于CT的65.5%、 61.1%，差异具有统计学意义(P＜0.05)； MRI 发病内12h检出率为84.0%，12-24h为 94.6%，与CT检测率52.0%、64.7%比较显 著较高(P＜0.05)，24h后两种方式检出率 比较无统计学意义(P＞0.05)。结论 CT与 MRI均为诊断脑梗塞的有效方式，MRI对于 早期诊断以及对各类型脑梗塞的检出率均 优于CT，临床工作中建议两者结合以提高 脑梗塞的诊断准确率。

Objective To investigate the clinical characteristics of CT and MRI in diagnosing cerebral infarction. Methods 84 cases with cerebral infarction in our hospital from September 2013 to August 2014 were selected as study objects and they were given CT and MRI respectively. The coincidence rate differences of different types and different onset time of cerebral infarction detection rate were compared. Results 78 cases were detected from 84 cases with MRI, the detection rate was 92.9%, obviously higher than CT detection (66.7%). Detection rate of MRI in diagnosing ischemic infarction and lacunar infarction were 93.1% and 97.2%, obviously higher than CT detection (65.5 and 61.1%), the difference was statistically significant (P＜0.05); Detection rate of MRI within 12h and 12-24h were 84.0% and 94.6%, obviously higher than CT detection rate (52.0% and 64.7%), the difference was statistically significant (P＜0.05). The difference was not statistically significant after 24h (P＞0.05). Conclusion CT and MRI are all effective methods and MRI can be used in early diagnosis. MRI detection rate of different types of cerebral infarction is higher than CT, and it is suggested that the the combination of them can improve the diagnostic rate