Conclusions The ultrasonograms and hemodynamics of TAO could be analysed by CDFI.CDFI can replace PAG as the first selective method in diagonsing of TAO.

• 结论彩色多普勒血流显像可以对TAO进行定性、定量和血流动力学分析，且简便、可靠，可以替代PAG作为诊断TAO的首选方法。