MRI和CT检查在腔隙性脑梗死中的应用分析

The analysis of application about MRI and CT examination of lacunar cerebral infarction

目的:观察磁共振成像(MRI)和X射线计算机断层成像(CT)检查在腔隙性脑梗死(LAC)患者中的诊断效果。方法:选取82例早期腔隙性脑梗死患者,采用MRI和CT检查,根据影像结果进行诊断,比较MRI和CT在LAC患者中的诊断效果。结果:82例腔隙性脑梗死患者经MRI检查确诊742个病灶,显著高于CT检查确诊的145个病灶,额叶和丘脑的检出率MRI检查显著高于CT检查,两种检查方法比较,差异有统计学意义(x^2=6.59,x^2=5.64,x^2=6.42;P<0.05);两种检测方法在顶叶、基底节及脑干检测率差异无统计学意义(x^2=0.18,x^2=1.25,x^2=0.81;P>0.05);内囊检出率MRI检查与CT比较差异有统计学意义(x^2=7.43,P<0.05);MRI检查病灶直径<5 mm的病灶数为256个,CT检查病灶直径<5 mm的病灶数为3个,两者比较差异有统计学意义(x^2=6.39,P<0.05)。结论:CT和MRI检查可应用于早期腔隙性脑梗死的诊断,MRI检查对早期、微小病变及额叶、丘脑、内囊的病变显示较CT检查准确,可作为诊断腔隙性脑梗死的首选检查方法。

Objective： To observe the diagnosis effect about the MRI and CT examination for the patients with lacunar cerebral infarction（LAC）. Methods： 82 cases early LAC patients during April 2014-June 2016 were diagnosed by two methods, MRI and CT, respectively. And the application effect of the two methods were compared based on image result. Results： In 82 cases of LAC 742 lesions confirmed by MRI and only 145 lesions confirmed by CT, and there was statistical significant between the two methods; especially in front lobe and thalamic, lesions detection rate using MRI was higher than CT, and there was statistical significant between the two methods（x^2=6.59, x^2=5.64, x^2=6.42; P0.05）; the difference of detection rate in capsula internal also was statistical significant（x^2=7.43, P0.05）; the number of lesion diameter less than 5mm was 256 using MRI and it was 3 using CT, the difference also was statistical significant（x^2=6.39, P0.05）.However, in parietal lobe, basal ganglia and brainstem, all of the difference were not statistical significant（x^2=0.18, x^2=1.25, x^2=0.81; P0.05）; Conclusion： Both of CT and MRI can be used in early diagnosis of LAC, and MRI examination is more accurate for early or micro lesions and lesions happened in the frontal lobe, thalamus, capsula internal than CT. Therefore, MRI can be used as first choice eximination method in early diagnosis of LAC.