目的对比分析MRI与CT检查在 老年多发性脑梗死诊断中的价值。方法 选择2005年10月至2014年10月入住我院 的135例老年多发性脑梗死患者作为研究 对象，均分别行CT与MRI检查。比较两种 检查方法在检出脑梗死时间及部位的差 别。结果 (1)CT组总检出率、脑梗死24h 内、24-72h、>72h检出率分别为55.56%、 32.61%、46.15%、84.00%，MRI组分别 为95.56%、94.88%、97.44%、98.00%， 两组总检出率及脑梗死24h内、24-72h 检出率差异具有统计学意义(P<0.05， P<0.01)；(2)MRI组检出病灶数量、病 灶大小、检查时间及发病-检查时间分 别为(2.39±0.55)个、(8.38±1.17) mm2 、(10.59±1.32)min及(0.91±0.24) d，CT组分别为(1.87±0.37)个、 (11.45±1.58)mm2 、(18.67±2.17)min及 (1.94±0.59)d，差异均具有统计学意义 (P<0.05，P<0.01)；(3)MRI对额叶部、顶 叶、基底节区及丘脑部的梗死检出率均显 著高于CT组(P<0.05)。结论 与CT相比， MRI在诊断老年多发性脑梗死方面具有更 大的优势，应在临床上进行推广。

Objective To compare the clinical value of MRI and CT imaging examination in diagnosing the elderly multiple cerebral infarction. Methods A total of 135 cases of elderly patients with cerebral infarction were admitted to our hospital from October 2005 to October 2014 as the researching objects,and they were respectively detected by CT and MRI.Two methods at different times of the detection rate of cerebral infarction,cerebral infarction in different parts of different indicators were compared. Results (1)The total detection rate and cerebral infarction within 24h,24 - 72h,72h later detection rates of CT group were 55.56%,32.61%,46.15%,84.00%,MRI group were 95.56%,94.88%,97.44 %, 98.00%,and the two groups overall detection rate of cerebral infarction within 24h,24 - 72h detection rate difference was statistically significant (P<0.05, P<0.01);(2)The number of detected lesions,lesion size check the time and onset-Check time of MRI group was (2.39±0.55) a,(8.38±1.17) mm2,(10.59±1.32) min and (0.91±0.24) d,CT group were (1.87±0.37) months,(11.45±1.58) mm2,(18.67±2.17) min and (1.94±0.59) d, the differences were statistically significant (P<0.05,P<0.01);(3)The detecting cases of right prefrontal,parietal lobe,basal ganglia the detection rate of infarct area and thalamus by MRI was significantly higher than CT (P<0.05). Conclusion Compared with CT,MRI had gerater advantage for the diagnosis of multiple cerebral infarction among elderly,and it should be carried out in clinical practice.