Results The sensitivity and specificity of color ultrasound for stenosis of carotid bifurcation, subclavicular artery and vertebral artery were 96.8%, 80.6%, 60.0% and 98.7%, 33.3%, 89.0%.

• 结果本组患者彩色多普勒超声检查对诊断颈动脉分叉部狭窄的敏感性和特异性分别为96.；8%25和80