肢体动脉闭塞性疾病的彩色多普勒超声诊断

Diagnosis or Arterial Occlusive Diseases in Extremity by Color Doppler

回顾性总结经彩色多普勒检查的肢体动脉闭塞性疾病２２例，其中１８例获得直接诊断依据，即病变段动脉缺乏多普勒血流信号，占８１．８２％，其结果与ＤＳＡ检查比较，差异不显著（Ｐ＞０．０５）。肢体动脉闭塞的重要间接征象是病变段远侧动脉彩色血流信号减低（颜色变暗），且颜色单一；脉冲多普勒显示为单相低速搏动或连续性血流频谱，即收缩期最大血流速度降低，舒张早期反向血流消失，其检。出率为１００％。彩色多普勒检查具有操作简单、无创伤性、无并发症等特点，是检查闭塞性动脉疾病的敏感方法，值得在临床进一步推广应用。

Twenty-two cases of arterial occlusive disease in extremity were examined with colorDoppler, There were direct diagnostic signs in 18 cases,which showed the lack of blood flow in occlusive arteries,with the detecting rate of 81. 82%. Statistically,there was not significant difference between the detecting rate of color Doppler and one of digital subtraction angiography (DSA) (P>0. 05).The indirect signs in the distal arterial occlusion included the decreased flow signals of color Doppler andsingle color; the pulsed Doppler with monophasic pulsatile or continuous spectrum,reduced peak systolic velocity, prolonged acceleration time,and disappearance of diastolic flow reversal. The detectingrate of the indirect signs was 100%. Color Doppler is a convenient, noninvasive, no complications andsensitive method for diagnosing the arterial occlusive disenases,it would be used more extensively.