双向超声Doppler血流仪能分别检出血流中同时存在的正、反两个方向的速度成分,因而它在方向型超声Doppler血流测量中更具临床价值.而在双向型中,使用滤波器单边带直接分离制式的,方向性能较为优越,但因制作较难,故在文献上不易见到.我们选用国内元件,继T-1型方向型超声Doppler血流检测仪之后,研制了一台单边带直接分 Two-way ultrasound Doppler flowmeter can detect the velocity of the blood flow in both positive and negative directions, so it is more clinical value in directional Doppler blood flow measurement.In the two-way type, the use of filtering Single sideband direct separation system, the direction of performance is superior, but difficult to make because of the production, it is not easy to see in the literature.We use the domestic components, following the T-1-oriented ultrasound Doppler blood flow detector, developed A single sideband with direct points