目的分析比较85例腔隙性 脑梗死(Lacunar infarction,LI)患 者 电 子 计 算 机 断 层 扫 描 ( C o m p u t e d tomography,CT)、磁共振成像(Magnetic resonance imaging,MRI)影像学表现及诊 断价值。方法 回顾性分析我院同时行CT 及MRI检查的85例LI患者临床资料，比较2 种检查方法检出病灶数目、部位、大小等 情况差异。结果 共85例LI患者MRI共检出 751个病灶，CT检出149个病灶，MRI检出 病灶数目为CT检出数目的5.04倍，且MRI 检出多发病灶者明显较CT多(P＜0.05)。 MRI检出病灶以额叶、基底节、顶叶最 多，CT检出病灶以内囊、基底节、顶叶最 多；MRI检查的额叶、丘脑、小脑病灶检 出率明显高于CT(P＜0.05)，内囊检出率 则低于CT(P＜0.05)；但2种检查方法的基 底节区、顶叶、脑干病灶检出率比较， 差异无统计学意义(P＞0.05)。MRI及CT 检出病灶均以直径≤5mm最多，分别占比 76.30%、56.38%；但MRI检查中直径≤5mm 病灶检出率明显高于CT(P＜0.05)，而直 径＞5mm病灶检出率均低于CT(P＜0.05)。 结论 CT及MRI均能用于诊断LI，但MRI检 出病灶更多，且能更清晰地发现微小病 灶，于LI的准确诊断更有利。

Objective To analyze and compared the imaging findings and diagnostic values of Computed tomography (CT) and magnetic resonance imaging (MRI) in 85 patients with lacunar infarction (LI). Methods The clinical data of 85 LI patients treated with CT and MRI examinations at the same time in our hospital were analyzed retrospectively. The differences in the number, location and size of lesions detected by the two methods were compared. Results Among 85 LI patients, 751 lesions were detected by MRI and 149 lesions by CT, and the number of detected lesions by MRI was 5.04 times than that by CT, and the number of multiple lesions detected by MRI was significantly higher than that by CT (P<0.05). Detected lesions by MRI were mainly in frontal lobe, basal ganglia and parietal lobe while lesions detected by CT were mainly in internal capsule, basal ganglia and parietal lobe. The detection rates of frontal lobe, thalamus and cerebellum lesions by MRI were significantly higher than those by CT (P<0.05) while the detection rate of internal capsule lesions was lower than that by CT (P<0.05). However, there was no significant difference in the detection rates of basal ganglia, parietal lobe and brainstem lesions by the two methods (P>0.05). The detected lesions by MRI and CT were mainly with diameter≤ 5mm, accounting for 76.30% and 56.38% respectively. The detection rate of lesions diameter≤5 mm by MRI was significantly higher than that by CT (P <0.05) while the detection rate of lesions diameter> 5mm was lower than that by CT (P<0.05). Conclusion Both CT and MRI can be used for the diagnosis of LI, but MRI can detect more lesions, and can detect lesions more clearly. The accurate diagnosis of LI is more favorable.