本文报导了机械扇形扫描超声切面显像仪的研制,着重叙述了手持扫描器的方案设计及电路原理,并报告了三年来临床应用效果。该扫描器具有体积小、重量轻、操作方便的优点,整机所显示的图像也很清晰。 This paper reports the development of the mechanical sector scanning ultrasonic section imager, focuses on the design of the hand scanner and the circuit principle, and reports the clinical application effect in the past three years. The scanner has the advantages of small size, light weight and easy operation, and the image displayed by the whole machine is also very clear.