一、引言医用多元彩色超声显像仪是将原来感度切面中的视频讯号,经过量化后成为阶调讯号,再进行彩色编码,并从彩色显示系统中得到彩色图象。它把以模拟方式显示的亮度差别的图象,变为呈量化方式的不同阶调亮度差别的图象。然后再将其变为色度差别的彩色图象。经过这一变,换高了人们对于切面图象的鉴别能力,从而提高了诊断的灵敏度。根据导彩色显示对于肿瘤诊断是很 I. INTRODUCTION The medical multi-color ultrasound imaging system converts the video signals in the original sensitivity section into quantized signals, then carries out color coding and obtains color images from the color display system. It changes the analogically displayed image of a difference in brightness into a quantized image of a difference in brightness. Then turn it into a color image with different chroma. After this change, raised people’s ability to identify images of the section, thereby increasing the diagnostic sensitivity. According to the guide color display for tumor diagnosis is very