using color duplex sonographyJ.European Journal of Radiology,2005,54:221224.Р 13MURAT A,BUMIN D,AYLIN Y,et al.An evaluation of internal carotid artery and cerebral blood floe using color duplex sonography in patients atic revieo dynamic characterization of focal nodular hyperplasis using threedimensional volumerendered multidetee for CT angiography J.AJR Am J Roentgenol,2002,179(1):8185.Р 24HOSS J,CHAN Y L,YEUNG D K,et al.Blood floe quantification of cerebral ischemia: parison of three noninvasive imaging techniques of carotid and vertebral arteries J.AJR Am J Roentgenol,2002,178(3):551556.Р 25AMIN H,DU X J,agic resonance angiography to stratify stroke risk in symptomatic vertebrobasilar disease J.Stroke,2005,36(6):11401145.Р 26段欣.彩色多普勒超声血流图对椎基底动脉供血不足的临床应用J.中国超声诊断杂志,2005(6):130131.