目的探讨MRI在老年多发性脑 梗死病变的检出率、病残率及病死率中 的价值。方法 回顾性分析我院2015年1 月-2017年1月收治的100例老年多发性脑 梗死患者，其中对照组52例患者接受CT 检查，观察组48例患者接受MRI检查。比 较两组患者脑梗死检出情况、病残率及病 死率、脑梗死检查指标、脑梗死部位异常 情况。结果 观察组患者病灶总检出率、 脑梗死24h以内发生率显著高于对照组 (P<0.05)；24-72h、>72h脑梗死发生率显 著低于对照组(P<0.05)。观察组患者6h内 病变检出率显著高于对照组，病残率、病 死率低于对照组(P<0.05)。观察组病灶数 量大于对照组(P<0.05)；病灶大小、检查 时间小于对照组(P<0.05)。两组患者脑梗 死部位异常情况比较有差异(Z=﹣8.609， P=0.000)。结论 MRI能提高老年多发性脑 梗死病变检出率，赢得6h溶栓时间，从而 减少病死率及致残率，有利于临床分型， 可推荐应用。

Objective To investigate the value of MRI in detection rate, morbidity and mortality in elderly patients with multiple cerebral infarction. Methods The clinical data of 100 elderly patients with multiple cerebral infarction admitted to our hospital from January 2015 to January 2017 were retrospectively analyzed. Among them, 52 patients in the control group were diagnosed by CT, and 48 patients in the observation group were diagnosed by MRI. The lesion detection rate, morbidity, mortality, examination indicators and site abnormalities were compared between groups. Results The lesion detection rate and the attack rate within 24h in the observation group were higher than those in the control group (P<0.05), and the attack rate during 24h-72h and more than 72h in the observation group were lower than those in the control group (P<0.05). The lesion detection rate within 6h in observation group was significantly higher than that in control group, and the morbidity and mortality in the observation group were lower than those in the control group (P<0.05). The number of lesions in the observation group was larger than that in the control group (P<0.05). The size of the lesion and the examination time in the observation group were shorter than those in the control group (P<0.05). The site abnormalities showed a significant difference between the two groups (Z= -8.609, P=0.000). Conclusion MRI can improve the detection rate of senile multiple cerebral infarction lesions, and reduce the morbidity and mortality, which is worthy of recommendation.