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1. 发明授权

US5327892A Ultrasonic imaging system 失效
标题翻译：超声波成像系统
公开(公告)号：US5327892A
公开(公告)日：1994-07-12
申请号：US68172
申请日：1993-05-28
申请人： Yasuhiro Nakamura , Hisashi Akiyama , Satoshi Akaishi
发明人： Yasuhiro Nakamura , Hisashi Akiyama , Satoshi Akaishi
IPC分类号： A61B8/00 , A61B8/14 , G01N29/44 , G01S7/52
CPC分类号： G01S7/52046 , G01S7/52034
摘要： An ultrasonic imaging system includes an ultrasonic probe for transmitting and receiving an ultrasonic wave, a driver unit for driving the ultrasonic probe, a detector unit for detecting an echo signal received by the ultrasonic probe, a filter unit operative to pass a detection signal from the detector unit and having a plurality of passbands which have respective flat frequency response characteristics and respective gains different from each other, a scanning conversion unit for converting the detection signal, which has passed through the filter unit, to a display signal to be displayed on a television, etc., and a display unit receiving the display signal from the scanning conversion unit to display it as a tomographic image. The filter unit operates to decrease respective amplitudes of high frequency components contained in the detection signal and to reduce a difference in brightness between adjacent scanning lines of the display unit, and flat frequency response characteristics of the filter unit prevent deterioration of frequency response characteristics of the detection signal. This makes it possible to produce a tomographic image of high resolution up to the resolution limit of the scanning lines of the display unit without impairing the image quality.
摘要翻译：超声波成像系统包括用于发送和接收超声波的超声波探头，用于驱动超声波探头的驱动器单元，用于检测由超声波探头接收到的回波信号的检测器单元，用于使检测信号从检测器单元，具有多个通带，它们具有彼此平坦的频率响应特性和各自的增益，扫描转换单元用于将已经通过滤波器单元的检测信号转换成显示信号以显示在电视等，以及显示单元，其从扫描转换单元接收显示信号，将其显示为断层图像。滤波器单元操作以减小检测信号中包含的高频分量的各个振幅，并且减小显示单元的相邻扫描线之间的亮度差，并且滤波器单元的平坦频率响应特性防止频率响应特性的劣化检测信号。这使得可以产生高分辨率的截面图像，直到显示单元的扫描线的分辨率极限，而不损害图像质量。

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