Ultrasonic diagnostic imaging of harmonic frequencies with speckle
reduction processing
    10.
    发明授权
    Ultrasonic diagnostic imaging of harmonic frequencies with speckle reduction processing 失效
    超声波诊断成像的谐波频率与斑点减少处理

    公开(公告)号:US5908389A

    公开(公告)日:1999-06-01

    申请号:US99052

    申请日:1998-06-17

    摘要: An ultrasonic diagnostic imaging system and methods are described which produces ultrasonic images from harmonic echo components of a transmitted fundamental frequency. Preferably, a programmable digital filter is used to pass harmonic echo components for image processing to the exclusion of fundamental frequency signals. In a preferred embodiment, artifacts are removed by producing decorrelated replicas of the harmonic signals, which are then combined and used for imaging. To produce an image in the presence of depth dependent attenuation of high frequency echo signals, both fundamental and harmonic echo signals are processed and used to produce an image blended from components of both fundamental and harmonic echo signals.

    摘要翻译: 描述了从发射的基频的谐波回波分量产生超声波图像的超声诊断成像系统和方法。 优选地,可编程数字滤波器用于将用于图像处理的谐波回波分量传送到排除基频信号。 在优选实施例中,通过产生谐波信号的去相关副本来去除伪影,然后将它们组合并用于成像。 为了在高频回波信号存在深度相关衰减的情况下产生图像,基波和谐波回波信号被处理并用于产生从基波和谐波回波信号的分量混合的图像。