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作者研制了一种方向型超声多普勒血流测量仪。它用比较两路信号相位来判断血流的方向。为增加接收Doppler信号的调制度,使用了丙类放大。血流速度和加速度都可被检测。上海两个著名医院已将本仪器用于临床。
The author developed a directional ultrasound Doppler blood flow meter. It compares the two phases of the signal to determine the direction of the blood flow. To increase the degree of modulation of the received Doppler signal, a Class C amplification is used. Blood flow velocity and acceleration can be detected. Two famous hospitals in Shanghai have used this instrument in clinical practice.