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    Method for acquiring spatially and spectrally selective MR images
    2.
    发明授权
    Method for acquiring spatially and spectrally selective MR images 失效
    用于获取空间和频谱选择性MR图像的方法

    公开(公告)号：US06175236B1

    公开(公告)日：2001-01-16

    申请号：US09047822

    申请日：1998-03-25

    申请人： Xiaohong Zhou ,  Matthew A. Bernstein

    发明人： Xiaohong Zhou ,  Matthew A. Bernstein

    IPC分类号： G01V300

    CPC分类号： G01R33/446 ,  G01R33/5613

    摘要： A method for acquiring spatially and spectrally selective MR images by means of an MR imaging system includes the step of selecting an SPSP pulse sequence, comprising a succession of RF sub-pulses and an oscillatory gradient magnetic field, which is disposed to select a slice through a subject. The method further includes measuring specified parameters of a perturbation magnetic field associated with the imaging system, and deriving an expression for the perturbation field from respective measured parameters and from the oscillatory gradient magnetic field. A specified ideal frequency modulation function, associated with the SPSP sequence, is disposed to offset the slice to a particular spatially localized region of the subject. The SPSP pulse sequence is modified by adjusting the frequency modulation function in specified corresponding relationship with the expression. The modified SPSP pulse sequence is then applied to the subject to excite a selected spectral species in the spatially localized region, while substantially reducing signal intensity loss resulting from the perturbation magnetic field.

    摘要翻译： 用于通过MR成像系统获取空间和频谱选择性MR图像的方法包括选择包括一系列RF子脉冲和振荡梯度磁场的SPSP脉冲序列的步骤，其被设置为选择切片通过 课程。 该方法还包括测量与成像系统相关联的扰动磁场的指定参数，以及从相应的测量参数和振荡梯度磁场导出扰动场的表达式。 设置与SPSP序列相关联的指定的理想频率调制功能，以将切片偏移到对象的特定空间局部区域。 通过调整与规定的对应关系的频率调制函数来修改SPSP脉冲序列。 然后将经修改的SPSP脉冲序列应用于受试者以激发空间局部区域中的选定光谱物种，同时显着降低由扰动磁场引起的信号强度损失。

    Correction of artifacts caused by maxwell terms in slice offset echo planar imaging
    4.
    发明授权
    Correction of artifacts caused by maxwell terms in slice offset echo planar imaging 有权
    校正由切片偏移回波平面成像中的maxwell项引起的假象

    公开(公告)号：US06064205A

    公开(公告)日：2000-05-16

    申请号：US265259

    申请日：1999-03-09

    申请人： Xiaohong Zhou ,  Yiping Du ,  Matthew A. Bernstein ,  Hammond G. Reynolds ,  Joseph K. Maier ,  Jason A. Polzin

    发明人： Xiaohong Zhou ,  Yiping Du ,  Matthew A. Bernstein ,  Hammond G. Reynolds ,  Joseph K. Maier ,  Jason A. Polzin

    IPC分类号： G01R33/32 ,  A61B5/055 ,  G01R33/54 ,  G01R33/561 ,  G01R33/565 ,  G01V3/00

    CPC分类号： G01R33/56581 ,  G01R33/56554

    摘要： Two methods are disclosed to remove the image artifacts produced by Maxwell terms arising from the imaging gradients in an echo planar imaging pulse sequence. In the first method, the frequency and phase errors caused by the Maxwell terms are calculated on an individual slice basis and subsequently compensated during data acquisition by dynamically adjusting the receiver frequency and phase. In the second method, two linear phase errors, one in the readout direction and the other in the phase-encoding direction, both of which arise from the Maxwell terms, are calculated on an individual-slice basis. These errors are compensated for in the k-space data after data acquisition.

    摘要翻译： 公开了两种方法来去除由回波平面成像脉冲序列中的成像梯度引起的由麦克斯韦尔产生的图像伪影。 在第一种方法中，由麦克斯韦尔项引起的频率和相位误差在单独的切片基础上计算，并随后通过动态调整接收机频率和相位在数据采集期间进行补偿。 在第二种方法中，以单个切片为基础计算两个线性相位误差，一个在读出方向上，另一个在相位编码方向上，两个来自麦克斯韦术语。 这些误差在数据采集后的k空间数据中得到补偿。

    Shunt-current reduction techniques for an implantable therapy system
    8.
    发明授权
    Shunt-current reduction techniques for an implantable therapy system 有权
    用于植入式治疗系统的分流电流还原技术

    公开(公告)号：US09192769B2

    公开(公告)日：2015-11-24

    申请号：US12551331

    申请日：2009-08-31

    申请人： William T. Donofrio ,  John E. Burnes ,  Paul G. Krause ,  Gerald P. Arne ,  Xiaohong Zhou

    发明人： William T. Donofrio ,  John E. Burnes ,  Paul G. Krause ,  Gerald P. Arne ,  Xiaohong Zhou

    IPC分类号： A61N1/08 ,  A61N1/37 ,  A61N1/36 ,  A61N1/372

    CPC分类号： A61N1/3718 ,  A61N1/08 ,  A61N1/086 ,  A61N1/36114 ,  A61N1/37288

    摘要： Techniques for minimizing interference between the first and second medical devices or between the different therapy modules of a common medical device are described herein. In some examples, a medical device may include shunt-current mitigation circuitry and/or at least one clamping structure that helps minimize or even eliminate shunt-current that feeds into a first therapy module of the medical device via one or more electrodes electrically connected to the first therapy module. The shunt-current may be generated by the delivery of electrical stimulation by a second therapy module. The second therapy module may be enclosed in a common housing with the first therapy module or may be separate, e.g., a part of a separate medical device.

    摘要翻译： 本文描述了用于最小化第一和第二医疗装置之间或在普通医疗装置的不同治疗模块之间的干扰的技术。 在一些示例中，医疗装置可以包括分流电流缓解电路和/或至少一个夹持结构，其有助于最小化或甚至消除通过电连接到医疗装置的一个或多个电极馈入医疗装置的第一治疗模块的分流电流 第一疗法模块。 分流电流可以通过第二治疗模块的电刺激递送来产生。 第二治疗模块可以用第一治疗模块封闭在共同的壳体中，或者可以是分离的，例如单独的医疗装置的一部分。

    METHOD AND APPARATUS FOR MONITORING CARDIAC AND RESPIRATORY CONDITIONS USING ACOUSTIC SOUNDS
    10.
    发明申请
    METHOD AND APPARATUS FOR MONITORING CARDIAC AND RESPIRATORY CONDITIONS USING ACOUSTIC SOUNDS 审中-公开
    使用声音监测心脏和呼吸系统状况的方法和装置

    公开(公告)号：US20130060150A1

    公开(公告)日：2013-03-07

    申请号：US13456357

    申请日：2012-04-26

    申请人： Zhendong Song ,  Xiaohong Zhou

    发明人： Zhendong Song ,  Xiaohong Zhou

    IPC分类号： A61B5/0205 ,  A61B7/00 ,  A61B5/08

    CPC分类号： A61B7/003 ,  A61B5/02 ,  A61B5/0205 ,  A61B5/0826 ,  A61B7/00 ,  A61N1/3627 ,  A61N1/36514

    摘要： A medical device system and associated method discriminating conditions that includes a plurality of sensors, a sensing module coupled to the plurality of sensors and configured to acquire signals from the plurality of sensors, and a processor coupled to the sensing module and configured to determine a change in a respiratory related sounds in response to a signal from a sensor of the plurality of sensors, select one or more sensors of the plurality of sensors associated with the determined change, determine a respiratory signature in response to signals from the selected one or more sensors, and determine the respiratory condition in response to the determined respiratory signature.

    摘要翻译： 一种医疗设备系统和相关联的方法来区分包括多个传感器的条件，耦合到多个传感器并被配置为从多个传感器获取信号的感测模块以及耦合到感测模块并被配置为确定变化的处理器 在响应于来自多个传感器的传感器的信号的呼吸相关声音中，选择与所确定的变化相关联的多个传感器中的一个或多个传感器，响应于来自所选择的一个或多个传感器的信号来确定呼吸特征 并且响应于所确定的呼吸标志来确定呼吸状况。