In addition,the resistant index(RI)>0.7 and the bifurcated peak on pulsed wave Doppler(PWD)of blood flows inside or peripheral of the tumors implied much more positive malignancy prediction.

• 另外脉冲多普勒频谱阻力指数 RI>0 .；7及峰值的“开叉”现象也具有很好的阳性预告意义。