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    Auxiliary cavity localization
    22.
    发明授权
    Auxiliary cavity localization 有权
    辅助腔定位

    公开(公告)号：US08290571B2

    公开(公告)日：2012-10-16

    申请号：US12507706

    申请日：2009-07-22

    Applicant: Robert G. Younge ,  Bhaskar S. Ramamurthy ,  Randall L. Schlesinger ,  Neal A. Tanner

    Inventor： Robert G. Younge ,  Bhaskar S. Ramamurthy ,  Randall L. Schlesinger ,  Neal A. Tanner

    IPC: A61B5/00

    CPC classification number: A61B5/06 ,  A61B5/065 ,  A61B34/20 ,  A61B2017/00243 ,  A61B2034/2046 ,  A61B2034/2051 ,  A61B2034/2072 ,  A61B2090/0812

    Abstract: A method and system for maintaining calibration of a distributed localization system are presented. After a baseline calibration of sensors distributed on a working instrument and reference instrument, if movement of the reference instrument is detected, shape sensing data from a Bragg shape sensing fiber also coupled to the reference instrument may be utilized to recalibrate the localization system. The reference instrument preferably is located intraoperatively in a relatively constrained anatomical environment, such as in the coronary sinus of the heart, to prevent significant movement.

    Abstract translation: 提出了一种用于维护分布式定位系统校准的方法和系统。 在分布在工作仪器和参考仪器上的传感器进行基线校准后，如果检测到参考仪器的移动，则可以利用来自参考仪器的布拉格形状传感光纤的形状感测数据来重新校准定位系统。 参考仪器优选地在手术中位于相对受限的解剖环境中，例如在心脏的冠状窦中，以防止显着的运动。

    Medical diagnostic ultrasound method and system for element switching
    23.
    发明授权
    Medical diagnostic ultrasound method and system for element switching 失效
    医疗诊断超声方法和元件切换系统

    公开(公告)号：US06174286B1

    公开(公告)日：2001-01-16

    申请号：US09200663

    申请日：1998-11-25

    Applicant: Bhaskar S. Ramamurthy ,  Stuart L. Carp ,  Albert Gee

    Inventor： Bhaskar S. Ramamurthy ,  Stuart L. Carp ,  Albert Gee

    IPC: A61B800

    CPC classification number: G01S15/8927 ,  A61B8/00 ,  G01N2291/02491 ,  G01S7/52047 ,  G10K11/345

    Abstract: A method and system for obtaining ultrasound data is provided. Two or more transducer elements are shorted or connected to the same transmit or receive channel for a single transmit or receive event. The affect of any grating lobes generated from shorting the transducer elements are minimized by receiving acoustic energy and then obtaining ultrasound data at a harmonic of a fundamental transmit frequency. No contrast agent is added during imaging. A multiplexer with a limited number of switches is used to short pairs of transducer elements together. Alternatively, a multiplexer with a limited number of switches is used to transmit or receive from spaced apertures, such as by connecting a channel to every second transducer element.

    Abstract translation: 提供了一种获取超声数据的方法和系统。 两个或多个换能器元件被短接或连接到相同的发射或接收信道用于单个发射或接收事件。 通过接收声能，然后在基本发射频率的谐波上获得超声数据，使得通过使换能器元件短路产生的任何栅瓣的影响最小化。 成像过程中不添加造影剂。 具有有限数量的开关的多路复用器用于将成对的换能器元件短对在一起。 或者，具有有限数量的开关的多路复用器用于从间隔开的孔传输或接收，例如通过将通道连接到每个第二换能器元件。

    Doppler energy-related parameters in an ultrasound imaging system
    24.
    发明授权
    Doppler energy-related parameters in an ultrasound imaging system 失效
    超声成像系统中的多普勒能量相关参数

    公开(公告)号：US5871447A

    公开(公告)日：1999-02-16

    申请号：US744384

    申请日：1996-11-07

    Applicant: Bhaskar S. Ramamurthy ,  George R. Sutherland

    Inventor： Bhaskar S. Ramamurthy ,  George R. Sutherland

    IPC: A61B8/06 ,  A61B8/08 ,  A61B8/00

    CPC classification number: A61B8/08 ,  A61B8/488 ,  A61B8/06

    Abstract: A method and apparatus for ultrasound imaging of Doppler energy-related parameters is described. An ultrasound imaging system includes a transducer for transmitting an ultrasound signal into a body and receiving a reflected ultrasound signal. The system determines the energy of the reflected signal from tissue within the body. Signal processing circuitry determines a Doppler intensity spectrum of the signal reflected from the tissue. The Doppler spectrum represents energy of the tissue-reflected signal as a function of Doppler frequency and time. Integration circuitry integrates the Doppler spectrum over Doppler frequency to determine the energy of the tissue-reflected signal as a function of time for display in strip mode. The system also determines an energy-velocity product. The integration circuitry may comprise circuitry for raising the Doppler intensity spectrum to a power m to generate a first spectral function and for raising a velocity-related function to a power n to generate a first velocity function. The integration circuitry integrates the product of the first spectral function and the first velocity function to determine the energy-velocity product function as a function of time.

    Abstract translation: 描述了多普勒能量相关参数超声成像的方法和装置。 超声波成像系统包括用于将超声信号发送到体内并接收反射超声信号的换能器。 该系统确定来自身体内组织的反射信号的能量。 信号处理电路确定从组织反射的信号的多普勒强度谱。 多普勒频谱表示作为多普勒频率和时间的函数的组织反射信号的能量。 积分电路将多普勒频谱多普勒频率整合，以确定组织反射信号的能量作为时间的函数，以便在条形模式下显示。 该系统还确定能量速度乘积。 积分电路可以包括用于将多普勒强度谱提升到功率m以产生第一光谱功能并且用于将速度相关函数提升到功率n以产生第一速度函数的电路。 集成电路集成了第一光谱函数和第一速度函数的乘积，以确定作为时间的函数的能量 - 速度乘积函数。

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