时间补偿电路在超声诊断仪中的应用

The application of time compensation circuit in ultrasonic machine

超声回波中所加载的图像信号是诊断中所需要的有价值的信息,鉴于超声波本身在人体中传播和衰减的特性,超声回波的接收和放大电路直接影响超声图像的质量,在超声仪器中占有重要地位,本文就其中的部分功能电路作了说明与分析。

Image signal carried by ultrasonic echo is valuable information in diagnose. Herein ultrasonic characteristic of transmit and attenuation in human body, receiving and magnifying circuits of ultrasonic echo affect directly the quality of ultrasonic image. These have an important status in ultrasonic machine. We introduce and analyze partial circuits in the article.