最近一、二年中,电子扫描式装置业已实用,这在医学诊断上有划时代的意义。医用超声装置的种类除脉冲反射式外,还有超声多普勒装置、各种超声全息及超声CT。1975年以来,急剧普及了带有具灰级的图象存储器-扫描转换管的装置。现大力发展着电子扫描式装置,它有实时显示、操作简单的优点。电 In the last one or two years, electronic scanning devices have become practical and have epoch-making significance in medical diagnosis. In addition to the type of medical ultrasound device pulse reflection, there are ultrasonic Doppler devices, a variety of ultrasound holography and ultrasound CT. Since 1975, a device with a grayscale image memory-scan conversion tube has rapidly popularized. Now vigorously develop the electronic scanning device, it has real-time display, simple operation advantages. Electricity