公开(公告)号：US5190044A

公开(公告)日：1993-03-02

申请号：US677092

申请日：1991-03-29

申请人： Schuichi Kawasaki ,  Toshio Shiraska ,  Takanobu Uchibori ,  Yasuo Miyajima

发明人： Schuichi Kawasaki ,  Toshio Shiraska ,  Takanobu Uchibori ,  Yasuo Miyajima

IPC分类号： G01S15/58 ,  G01S15/89

CPC分类号： G01S15/8979 ,  G01S15/582

摘要： An ultrasonic blood flow imaging apparatus of this invention includes an ultrasonic probe, a transmission system, a reception system, a B mode processing system, a CFM processing system, an FFT processing system, a video system, and a control system. The CFM processing system includes a new discriminating means. The discriminating means receives power, average blood flow velocity, and variance data output from an auto-correlation circuit. The discriminating means can discriminate Doppler shift signals (blood flow signals), noise signals, and clutter signals from each other with high precision on the basis of a relationship in combination of two or more received factors, i.e., the power, average blood flow velocity, and variance data. With such discrimination processing, only necessary blood flow signals can be extracted, and hence high-precision blood flow information can be obtained.

摘要翻译： 本发明的超声波血流成像装置包括超声波探头，传输系统，接收系统，B模式处理系统，CFM处理系统，FFT处理系统，视频系统和控制系统。 CFM处理系统包括一种新的鉴别手段。 识别装置接收从自相关电路输出的功率，平均血流速度和方差数据。 鉴别装置可以基于两个或更多个接收因子的组合的关系，即高功率，平均血流速度，高精度，高精度地鉴别多普勒频移信号（血流信号），噪声信号和杂波信号 ，和方差数据。 通过这种判别处理，仅能够提取必要的血流信号，能够获得高精度的血流信息。

公开(公告)号：US5081996A

公开(公告)日：1992-01-21

申请号：US556524

申请日：1990-07-24

申请人： Schuichi Kawasaki ,  Nobuo Yamazaki ,  Takeshi Sato

发明人： Schuichi Kawasaki ,  Nobuo Yamazaki ,  Takeshi Sato

IPC分类号： G01N29/26 ,  A61B8/06 ,  G01S7/52 ,  G01S15/89

CPC分类号： G01S15/8979 ,  B82Y15/00 ,  G01S15/8906 ,  G01S15/8977 ,  G01S7/52046 ,  G01S7/5206 ,  G01S7/52071 ,  G01S7/52085

摘要： An ultrasonic imaging apparatus comprises an ultrasonic transducer for transmitting ultrasonic beams to a subject and converting echoes from the subject to echo signals, a scan controller for selectively switching a scanning mode between a first scanning mode in which a predetermined number of rasters in each of a plurality of scanning blocks each having the predetermined number of rasters are scanned repeatedly and echo signals at a predetermined number of sample points in each of the rasters are extracted block by block and a second scanning mode in which a plurality of rasters are repeatedly scanned a predetermined number of times while at least one raster is shifted sequentially and data are output at constant intervals, a transmitter/receiver circuit for driving the ultrasonic transducer in accordance with a scanning mode selected by the scan controller, processes the echo signals output from the ultrasonic transducer to output an image signal and a television monitor for visually displaying the image signal.

摘要翻译： 超声波成像装置包括用于将超声波束发射到对象并将来自受试者的回波转换成回波信号的超声波换能器，扫描控制器，用于在第一扫描模式之间有选择地切换扫描模式，在第一扫描模式中， 重复扫描具有预定数量的光栅的多个扫描块，并且逐块地提取每个光栅中的预定数量的采样点处的回波信号，并且第二扫描模式，其中多个光栅重复扫描预定的 在至少一个光栅顺序移位并以恒定间隔输出数据的次数的同时，根据由扫描控制器选择的扫描模式驱动超声波换能器的发射器/接收器电路处理从超声换能器输出的回波信号 以便视觉地输出图像信号和电视监视器 显示图像信号。