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    Ultrasonic signal processor for power doppler imaging in a hand held ultrasonic diagnostic instrument
    7.
    发明授权
    Ultrasonic signal processor for power doppler imaging in a hand held ultrasonic diagnostic instrument 有权
    超声波信号处理器用于手持超声波诊断仪器中的多普勒成像

    公开(公告)号：US06383139B1

    公开(公告)日：2002-05-07

    申请号：US09426088

    申请日：1999-10-22

    申请人： Juin-Jet Hwang ,  Lauren S. Pflugrath ,  Ramachandra Pailoor ,  Terrence R. Doherty ,  Geoffrey Hugh Jones

    发明人： Juin-Jet Hwang ,  Lauren S. Pflugrath ,  Ramachandra Pailoor ,  Terrence R. Doherty ,  Geoffrey Hugh Jones

    IPC分类号： A61B800

    CPC分类号： A61B8/00 ,  A61B8/06 ,  A61B8/13 ,  A61B8/14 ,  A61B8/4427 ,  A61B8/4455 ,  A61B8/488 ,  A61B2560/0456 ,  G01S7/52028 ,  G01S7/52034 ,  G01S7/5206 ,  G01S7/52079 ,  G01S7/5208 ,  G01S15/8915 ,  G01S15/892 ,  G01S15/8979 ,  G01S15/899 ,  G10K11/004 ,  G10K11/345

    摘要： A hand held ultrasonic instrument is provided in a portable unit which performs both B mode and Doppler imaging. The instrument includes a transducer array mounted in a hand-held enclosure, with an integrated circuit transceiver connected to the elements of the array for the reception of echo signals. A digital signal processing circuit performs both B mode and Doppler signal processing such as filtering including wall filtering matrix and Hartley transform matrix functions, detection and Doppler estimation, as well as advanced functions such as assembly of multiple zone focused scanlines, synthetic aperture formation, depth dependent filtering, speckle reduction, flash suppression, and frame averaging. The advent of color flow imaging based on Doppler frequency estimation in medical ultrasound addresses a need for rapid assessment of overall flow characteristics in cardiac care. Typical prior art implementation utilize a high degree of temporal filtering in order to enhance the flow signal, but makes the image slow to respond to changes in flow. This is true of both directional and non-directional implementations, and is necessitated by the instability of traditional estimation techniques that are derived from older color flow techniques. A significant advantage of the present invention is excellent stability of both power and direction estimates.

    摘要翻译： 手持式超声波仪器设置在执行B模式和多普勒成像的便携式单元中。 该仪器包括安装在手持外壳中的换能器阵列，集成电路收发器连接到阵列的元件以接收回波信号。 数字信号处理电路执行B模式和多普勒信号处理，例如包括壁滤波矩阵和Hartley变换矩阵函数的滤波，检测和多普勒估计，以及诸如组合多区域聚焦扫描线，合成孔径形成，深度 相关滤波，散斑减少，闪光抑制和帧平均。 基于医学超声多普勒频率估计的彩色流动成像的出现，需要快速评估心脏保健中的整体流量特征。 典型的现有技术实现利用高度的时间滤波来增强流量信号，但是使得图像缓慢地响应于流动的变化。 对于定向和非方向性实现都是如此，并且由于旧颜色流技术导出的传统估计技术的不稳定性是必需的。 本发明的显着优点是功率和方向估计的优异的稳定性。

    Ultrasonic diagnostic imaging system with cordless scanheads
    9.
    发明授权
    Ultrasonic diagnostic imaging system with cordless scanheads 失效
    具有无绳扫描头的超声诊断成像系统

    公开(公告)号：US6142946A

    公开(公告)日：2000-11-07

    申请号：US197398

    申请日：1998-11-20

    申请人： Juin-Jet Hwang ,  Lauren S. Pflugrath ,  Leo R. Catallo

    发明人： Juin-Jet Hwang ,  Lauren S. Pflugrath ,  Leo R. Catallo

    IPC分类号： A61B8/14 ,  A61B5/00 ,  G01S7/00 ,  G01S7/52 ,  G01S7/521 ,  G01S15/89 ,  G06T1/00

    CPC分类号： A61B8/00 ,  A61B8/4472 ,  A61B8/565 ,  G01S7/003 ,  G01S7/52017 ,  G01S7/52079 ,  G01S7/5208 ,  A61B5/7232 ,  G01S15/899

    摘要： An ultrasonic diagnostic imaging system is provided with cordless scanheads which wirelessly transmit ultrasonic image signals to the imaging system. The transmitted image signals are received by a receiver in the mainframe ultrasound system where they undergo further image processing and are displayed. In a preferred embodiment the scanhead image signals are at least partially beamformed in the scanhead before being transmitted to the ultrasound system, thereby reducing the required transmission bandwidth. The cordless scanheads are battery powered, and are recharged by the ultrasound system when the scanheads are not being used for scanning.

    摘要翻译： 超声诊断成像系统具有无线扫描头，其将超声图像信号无线传输到成像系统。 发送的图像信号由主机超声系统中的接收机接收，在那里它们进行进一步的图像处理并被显示。 在优选实施例中，扫描头图像信号在被发送到超声系统之前至少部分地在扫描头中成束，从而减少所需的传输带宽。 无绳扫描头由电池供电，当扫描头未被用于扫描时，由超声波系统进行充电。