We observed and measured the internal diameter of the bloodvessel,echo sign of the internal wall,stenosis extent,the nature of blood flow,the velocity of blod flow and resistant index (RI).

• 结果颈动脉粥样硬化有61例(6193)；占65.；6%25；轻度狭窄39例；中度和重度狭窄各1例；动脉壁有广泛的粥样硬化时血流速度增快；阻力指数>0