颈动脉超声和DSA对颅外段颈动脉狭窄诊断的对比研究

目的:比较彩色多普勒超声(CDFI)和血管造影(DSA)对颅外段颈动脉狭窄的诊断价值。方法:对112例怀疑颈动脉狭窄的患者行颈动脉CDFI检查,然后再行DSA检查,对比两者的检查结果并进行分析。结果:以DSA检查结果为金标准,CDFI对颈动脉狭窄诊断的敏感性87.28%,特异性65.63%,准确性86.16%,阳性预测值87.28%,阴性预测值82.35%。结论:CDFI对颅外段颈动脉狭窄的敏感性高,可重复,无创伤,且对狭窄的原因能做出判断,适合于人群的筛选检查。DSA检查作为诊断颈动脉狭窄的金标准,可以起确诊作用。而二者结合可以全方位地了解狭窄的颈动脉,为临床制定合理的治疗方案提供依据。

Comparative study of ultrasound and DSA on extracramial carotid stenosis

Objective：To compare color doppler flow imaging and DSA diagnostic value in extracramial carotid stenosis.Methods：112 patients with suspected carotid stenosis were examined by CDFI and then digital subtraction angiography（DSA）.Two results were analysed.Results：DSA was still the gold standard in the diagnosis.CDFI demonstrated carotid stenosis with sensitivity of 94.38%,specificity of 65.63%,accuracy of 86.16%,positive predictive 87.28%,and negative predictive 83.35%.Conclusion：CDFI is a senstive,repeatable,noninvasive method and can discriminated reason of stenosis.CDFI is suitable for initial detetion.DSA is the gold standard of carotid stenosis,which offers reliable informations.A combination CDFI and DSA provides details of carotid stenosis that is helpful to clinical management.