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    Methods of preparing and operating an MRI multi-channel coil
    1.
    发明授权
    Methods of preparing and operating an MRI multi-channel coil 有权

    公开(公告)号：US09791525B2

    公开(公告)日：2017-10-17

    申请号：US14235475

    申请日：2011-08-01

    申请人： Mikhail Kozlov ,  Robert Turner

    发明人： Mikhail Kozlov ,  Robert Turner

    IPC分类号： G01V3/00 ,  G01R33/36 ,  G01R33/3415 ,  G01R33/561 ,  G01R33/565

    CPC分类号： G01R33/36 ,  G01R33/3415 ,  G01R33/365 ,  G01R33/5612 ,  G01R33/5659

    摘要： A method of preparing a multi-channel coil, in particular for magnetic resonance imaging (MRI) or for a medical treatment device, wherein the multi-channel coil comprises at least two coil rows being axially arranged along a longitudinal direction (z), wherein each of the at least two coil rows comprises a plurality of coil elements being azimuthally distributed relative to the longitudinal direction (z), comprises the steps of a) electro-magnetic decoupling of the coil rows relative to each other, and b) minimizing a reflected power (Pref_row) individually of each of the coil rows. Furthermore, a method of operating a multi-channel coil, in particular for magnetic resonance imaging (MRI) or for a medical treatment device, and a multi-channel coil, which is prepared using to the above method are described.

    Dynamic Means for Correcting for Load Imbalance and Harmonic Distortion
    3.
    发明申请
    Dynamic Means for Correcting for Load Imbalance and Harmonic Distortion 审中-公开
    用于校正负载不平衡和谐波失真的动态方法

    公开(公告)号：US20150200604A1

    公开(公告)日：2015-07-16

    申请号：US14051127

    申请日：2013-10-10

    申请人： Robert Turner ,  Hamid Pishdadian

    发明人： Robert Turner ,  Hamid Pishdadian

    IPC分类号： H02M7/217 ,  H02M1/12

    CPC分类号： H02J3/26 ,  H02J3/01 ,  Y02E40/40 ,  Y02E40/50

    摘要： A method and apparatus are directed to a dynamic means for correcting imbalance and harmonic distortion in an electrical system. In one embodiment, the device includes an imbalance and harmonics measurement module configured to measure power parameters for determining imbalance and harmonics within the electrical three-phase system. Within this system a series of capacitors are configured to respond to measured demands reported and designated to correct for imbalance and harmonics distortion. The device is networked among various source load controllers are responsible for designating master and slave relationships within the closed system.

    摘要翻译： 一种方法和装置涉及用于校正电气系统中的不平衡和谐波失真的动态装置。 在一个实施例中，该装置包括不平衡和谐波测量模块，其被配置为测量用于确定电三相系统内的不平衡和谐波的功率参数。 在该系统内，一系列电容器被配置为响应所报告并指定的测量要求，以校正不平衡和谐波失真。 该设备在各种源负载控制器之间联网，负责在封闭系统内指定主从关系。

    Method for Multi-Mode, Multi-Load, and Multi-Domain Optimization of a Multi-Channel Near-Field RF Transmitter
    6.
    发明申请
    Method for Multi-Mode, Multi-Load, and Multi-Domain Optimization of a Multi-Channel Near-Field RF Transmitter 有权
    多通道近场射频发射机的多模，多负载和多域优化方法

    公开(公告)号：US20150028869A1

    公开(公告)日：2015-01-29

    申请号：US14384974

    申请日：2012-03-14

    申请人： Mikhail Kozlov ,  Robert Turner

    发明人： Mikhail Kozlov ,  Robert Turner

    IPC分类号： G01R33/54 ,  G01R33/36

    CPC分类号： G01R33/54 ,  G01R33/3607 ,  G01R33/5612

    摘要： The invention relates to a method for optimization of a performance of a multi-channel transmitter including several transmit elements, particularly in a magnetic resonance imaging device. The method includes: (a) Exciting the transmit elements of the multi-channel transmitter by electric excitation signals comprising a specific power, with the power of the excitation signals partially reflected by the transmit elements of the multichannel transmitter, (b) Determining a reflected power which is reflected by the multi-channel transmitter during excitation of the transmit elements, (c) Determining reflection coefficients Sxx of the multi-channel transmitter, (d) Determining reflection coefficients Sxy of the multi-channel transmitter, (e) Calculating a performance criterion representing the performance of the multi-channel transmitter, with the performance criterion based on the reflected power, the reflection coefficients Sxx and the reflection coefficients Sxy, and (f) Tuning the multi-channel transmitter so that the performance criterion is optimized.

    摘要翻译： 本发明涉及一种用于优化包括多个发射元件的多信道发射机的性能的方法，特别是在磁共振成像设备中。 该方法包括：（a）通过包括特定功率的电激励信号来激励多信道发射机的发射元件，激励信号的功率部分地被多信道发射机的发射元件反射，（b）确定反射的 （c）确定多声道发射机的反射系数Sxx，（d）确定多声道发射机的反射系数Sxy，（e）计算多声道发射机的反射系数Sxy， 表示多通道发射机的性能的性能标准，其中基于反射功率的性能标准，反射系数Sxx和反射系数Sxy，以及（f）调谐多通道发射机，使得性能标准被优化。

    METHODS OF PREPARING AND OPERATING AN MRI MULTI-CHANNEL COIL
    7.
    发明申请
    METHODS OF PREPARING AND OPERATING AN MRI MULTI-CHANNEL COIL 有权
    制作和操作MRI多通道线圈的方法

    公开(公告)号：US20140152309A1

    公开(公告)日：2014-06-05

    申请号：US14235475

    申请日：2011-08-01

    申请人： Mikhail Kozlov ,  Robert Turner

    发明人： Mikhail Kozlov ,  Robert Turner

    IPC分类号： G01R33/36

    CPC分类号： G01R33/36 ,  G01R33/3415 ,  G01R33/365 ,  G01R33/5612 ,  G01R33/5659

    摘要： A method of preparing a multi-channel coil, in particular for magnetic resonance imaging (MRI) or for a medical treatment device, wherein the multi-channel coil comprises at least two coil rows being axially arranged along a longitudinal direction (z), wherein each of the at least two coil rows comprises a plurality of coil elements being azimuthally distributed relative to the longitudinal direction (z), comprises the steps of a) electro-magnetic decoupling of the coil rows relative to each other, and b) minimizing a reflected power (Pref—row) individually of each of the coil rows. Furthermore, a method of operating a multi-channel coil, in particular for magnetic resonance imaging (MRI) or for a medical treatment device, and a multi-channel coil, which is prepared using to the above method are described.

    摘要翻译： 一种制备多通道线圈的方法，特别是用于磁共振成像（MRI）或医疗处理装置，其中多通道线圈包括沿纵向方向（z）轴向布置的至少两个线圈排，其中 所述至少两个线圈列中的每一个包括相对于纵向方向（z）方位分布的多个线圈元件，包括以下步骤：a）线圈列相对于彼此的电磁去耦，以及b）使 每个线圈列分别具有反射功率（Pref-row）。 此外，描述了使用上述方法制备的操作多通道线圈的方法，特别是用于磁共振成像（MRI）或医疗处理装置以及多通道线圈。