摘要
目的评价减影CTA对检察颅颈部血管性病变的灵敏度和特异度及其临床应用价值。方法对76例怀疑颅颈部血管疾病患者施行16层螺旋减影CTA检查,在保证增强前后所采集的数据参数一致的前提下用Neuro-DSA软件进行减影,其中30例与DSA作比较观察。减影CTA图像质量分为优良、一般、差;应用非参数统计检验、计算减影CTA显示病变的灵敏度和特异度。结果以颈内动脉颅段、前后交通动脉、大脑前中后动脉近段、椎基动脉为观察对象,共观察血管段900段。减影CTA图像质量优良571段,为63.4%,一般有301段,为33.4%。但在显示颅颈部不同段血管的图像质量上有差异;减影CTA检出病变的灵敏度为84.4%,特异度为40%,检出动脉瘤的灵敏度和特异度均为100%。结论16层螺旋减影CTA无创,快捷,简单易行,能提供较高分辨率的血管图像,可作为一种常规的方法应用于颅颈部血管疾病的筛查和诊断。
Objective To evaluate the sensitivity and specificity for diagnosis of 16 slice CT subtraction angiography in finding cranial or neck vascular diseases, and to assess the value of its clinical application. Methods We randomly chose 76 patients with or probably with cranial or neck vascular diseases to have the 16 slice CT subtraction angiography examination. The parameters of the non-enhanced and enhanced CT data were uniformly controlled with subtraction process done by Neuro-DSA software. Among them, 30 patients＇ images were compared with those of the digital subtraction angiograpby （DSA）. Results The objective arteries included intracranial internal carotid artery, anterior and posterior communicating artery, the proximal section of anterior, middle and posterior cerebral arteries, vertebral artery and the basilar artery. We totally observed 900 sections of vessels, with image quality rated good in 571 （63.4%）, acceptable in 301 （33.4%）, but the difference of the image quality existed in the different section of the arteries. The sensitivity of 16 slice CT subtraction angiography was 84.4%, and the specificity was 40%, but both of them were 100% in diagnosing aneurysm. Conclusion As a non-invasive and quick method, 16 slice subtraction CT angiography improves the diagnostic accuracy and therapetic planning of intracranial aneurysms, and can be further used routinely for screening cranial or neck vascular diseases. （J Intervent Radiol, 2007, 16：307-311 ）
出处
《介入放射学杂志》
CSCD
2007年第5期307-311,共5页
Journal of Interventional Radiology
基金
上海市科委重点资助项目(034119851)
作者简介
通讯作者：李明华
