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目的通过颈动脉狭窄诊断金标准的数字减影血管成像(DSA)与CT血管造影(CTA)的比较研究,探讨CTA在颈动脉狭窄诊断中的可行性及技术优势。方法回顾分析94例做过CTA且在2w内做过DSA的患者的影像学资料分析,比较两种诊断方法的一致性。结果 CTA的灵敏度为97.1%,特异度为97.0%,正确指数(Youden’s index)为94.1%;且两种诊断方法的一致性Kappa值为0.922。结论 3D-CTA具有检查时间短、费用低,同时较高的空间分辨率,可以得到更广泛的应用。
Objective To investigate the feasibility and technical superiority of CTA in the diagnosis of carotid artery stenosis by comparing the gold standard digital subtraction angiography (DSA) and CT angiography (CTA). Methods We retrospectively analyzed the imaging data of 94 patients who underwent CTA and did DSA within 2 weeks. The consistency of the two diagnostic methods was compared. Results The sensitivity of CTA was 97.1%, the specificity was 97.0%, the Youden’s index was 94.1%, and the consistency Kappa value of the two diagnostic methods was 0.922. Conclusion 3D-CTA has the advantages of short examination time, low cost and high spatial resolution, which can be widely used.