CT血管造影在颅内动脉粥样硬化诊断中的应用价值

目的 探讨CT血管造影（CTA）在颅内动脉粥样硬化诊断中的应用价值.方法 以68例拟诊缺血性脑血管疾病患者为研究对象,所有患者均行CTA检查,并行图像处理,观察患者的CTA特点,并与数字减影血管造影（DSA）检查结果作对比.结果 68例患者共检查376条血管.CTA发现112条病灶,诊断正常血管数264条;颅内动脉粥样硬化斑块主要分布于颈内动脉（53条）,大脑前、中、后动脉（共39条）及椎-基底动脉（20条）.狭窄动脉段中,狭窄伴钙化的斑块32条,大部分位于大脑中动脉、颈内动脉的海绵窦段及床突上段、椎动脉的颅内段.对于非钙化斑块,CTA显示模糊.DSA共显示128条病灶,诊断正常血管248条.CTA显示中重度狭窄率[9.31％（35/376）]与DSA[9.31％（35/376）]一致.38例患者临床诊断正确.结论 CTA为一种微创伤的颅内动脉粥样硬化诊断方法,检查耗时少,费用低,且空间分辨率高,适合临床普及应用.

The value of CT angiography in the diagnosis of intracranial atherosclerosis

Objective To investigate the CT angiography （CTA） in the diagnosis of intracranial atherosclerosis.Methods Sixty-eight cases of suspected ischemic cerebrovascular disease patients were enrolled in this study,and all patients underwent CTA.Parallel image post-processing was done.CTA characteristics were observed and compared with digital subtraction angiography （DSA） results.Results A total of 376 lesions in 68 cases were examined,112 lesions were found in CTA; intracranial atherosclerotic plaques mainly distributed in the internal carotid artery （53 lesions）,anterior cerebral,middle and posterior artery （39 lesions） and vertebral-basilar artery （20 lesions）.In narrow artery segment,stenosis with calcified plaque was in 32 lesions,mostly in the middle cerebral artery,the cavernous segment of the internal carotid artery,clinoids segment and intracranial vertebral artery.For non-calcified plaque,CTA showed fuzzy.DSA showed 128 total lesions,and severe stenosis rate in CTA [9.31％ （35/376）] and DSA [9.31％ （35/376）] was consistent.Thirty-eight patients were correctly diagnosed.Conclusions CTA as a minimally invasive intracranial atherosclerosis diagnostic methods,consumes less time with low cost and high spatial resolution.It is suitable for clinical universal application.