Method and apparatus for forming medical ultrasound images
    9.
    发明授权
    Method and apparatus for forming medical ultrasound images 有权
    用于形成医学超声图像的方法和装置

    公开(公告)号:US06309356B1

    公开(公告)日:2001-10-30

    申请号:US09518972

    申请日:2000-03-06

    IPC分类号: A61B800

    摘要: A pulse echo beamforming system generates high spatial bandwidth ultrasound images using only a few transmit/receive events per frame. Each transmit/receive event consists of firing an unfocused or weakly focused wave and receiving and storing the echo on every receive channel. Each set of stored echoes is delayed and apodized to form component beams for each desired image point in the region insonified by that particular wave. The final images are synthesized by adding two or more of the component beams for each image point.

    摘要翻译: 脉冲回波波束成形系统使用每帧仅使用少量发射/接收事件来生成高空间带宽超声图像。 每个发射/接收事件包括触发未聚焦或弱聚焦的波,并在每个接收通道上接收和存储回波。 每组存储的回波被延迟和变迹以形成由该特定波加密的区域中的每个期望图像点的分量波束。 通过为每个图像点添加两个或更多个分量光束来合成最终图像。

    Precision complex sinusoid generation using limited processing
    10.
    发明授权
    Precision complex sinusoid generation using limited processing 有权
    精密复合正弦曲线生成采用有限加工

    公开(公告)号:US06981011B1

    公开(公告)日:2005-12-27

    申请号:US09966104

    申请日:2001-10-01

    申请人: David Napolitano

    发明人: David Napolitano

    IPC分类号: G06F1/02 G06F1/03

    CPC分类号: G06F1/03

    摘要: A first value of a sinusoidal-shaped electronic signal is computed based on a Lagrange interpolation using an update phase-angle associated with the electronic signal, a first set of equally-spaced data-values that generally describe the sinusoidal function and a second set of pre-calculated-values, which are based on spacing differences between the data-values. The first value can then be used to update the electronic signal or used to update another signal, such as a communication signal.

    摘要翻译: 基于使用与电子信号相关联的更新相位角的拉格朗日插值来计算正弦形电子信号的第一值,通常描述正弦函数的第一组等间隔数据值,以及第二组 预先计算的值,其基于数据值之间的间隔差。 然后可以使用第一个值来更新电子信号或用于更新另一个信号,如通信信号。