目的 比较CT与MRI在脑梗死早期 诊断中的应用效果。方法 记录我院接诊 的70例多发性脑梗死患者颅脑CT与MRI检 查结果，比较两种检查方式对患者病变 检出情况、检查基本情况(病灶检出数、 检查时间、病灶大小、发病至影像确诊 时间)以及对不同位置病灶的检出情况。 结果 CT检查24h以内病变检出率、24-72h 病变检出率以及总病变检出率均低于MRI 检查，误诊率高于MRI检查，差异有统计 学意义(P＜0.05)；CT检查病灶平均检出 数低于MRI检查，平均检查时间、平均病 灶大小、发病至影像确诊时间高于MRI检 查，差异有统计学意义(P＜0.05)；CT检 查对基底节区、额叶、丘脑、顶叶、脑干 位置病灶检出率低于MRI检查，差异有统 计学意义(P＜0.05)。结论 颅脑MRI在多 发性脑梗死早期诊断中效果优于颅脑CT， 在发现微小病灶、缩短检查时间、提高病 变检出率等方面更具临床优势。

Objective To explore the clinical effect of early diagnosis for the patients with cerebral infarction by CT and MRI. Methods The tested results for 70 cases of patients with multiple infarction were recorded. The lesions were detected, the basic conditions were examined (the number of lesions, the time of examination, the size of the lesion, the duration of the diagnosis and the time of the imaging diagnosis), and the lesions in different locations were compared. Results The lesion detection rate in 24h, 24-72h and total lesion detection rate for the CT were lower than MRI(P＜0.05), the misdiagnosis rate for the CT were higher than MRI(P＜0.05). The average number of lesions for the CT were lower than MRI(P＜0.05). The average examination time, average lesion size, pathogenesis to imaging diagnosis time for the CT were higher than MRI(P＜0.05). The rate of basal section, frontal lobe, thalamus, parietal lobe, and brain stem position lesions for the CT were lower than MRI(P＜0.05). Conclusion It has good results for the patients with cerebral infarction by MRI, it have advantages on detection of small lesions, shortening inspection time and improving the detection rate of lesions.