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    Magnetic resonance device, reflector array and high-frequency shield system for a magnetic resonance device
    7.
    发明授权
    Magnetic resonance device, reflector array and high-frequency shield system for a magnetic resonance device 有权
    用于磁共振装置的磁共振装置，反射器阵列和高频屏蔽系统

    公开(公告)号：US08766632B2

    公开(公告)日：2014-07-01

    申请号：US13240026

    申请日：2011-09-22

    申请人： Stephan Biber ,  Jürgen Nistler ,  Markus Vester

    发明人： Stephan Biber ,  Jürgen Nistler ,  Markus Vester

    IPC分类号： G01V3/00

    CPC分类号： G01R33/422 ,  G01R33/34007 ,  G01R33/3415 ,  G01R33/3642

    摘要： A magnetic resonance device with a measurement chamber, an antenna arrangement that has a plurality of antenna elements arranged at least in certain areas around the measurement chamber, a gradient coil system arranged outside the antenna arrangement as seen from the measurement chamber, and a high-frequency shield system arranged between the antenna arrangement and the gradient coil system are provided. The high-frequency shield system has a reflector array with a plurality of passive reflector resonance circuits, each of which is configured such that resonance frequencies of the plurality of passive reflector resonance circuits lie below an operating magnetic resonance frequency of the magnetic resonance device and that the plurality of passive reflector resonance circuits has an inductive overall impedance.

    摘要翻译： 一种具有测量室的磁共振装置，至少在测量室周围的某些区域中布置有多个天线元件的天线装置，从测量室观察时布置在天线装置外部的梯度线圈系统， 设置在天线装置和梯度线圈系统之间的频率屏蔽系统。 高频屏蔽系统具有多个无源反射器谐振电路的反射器阵列，每个被动反射器谐振电路被配置为使得多个无源反射器谐振电路的谐振频率低于磁共振装置的工作磁共振频率，并且 多个无源反射器谐振电路具有感应整体阻抗。

    Generator for generating time-variable magnetic fields and magnetic resonance device
    8.
    发明授权
    Generator for generating time-variable magnetic fields and magnetic resonance device 失效
    用于产生时变磁场和磁共振装置的发电机

    公开(公告)号：US07173422B2

    公开(公告)日：2007-02-06

    申请号：US10957434

    申请日：2004-10-01

    申请人： Jürgen Nistler ,  Stefan Stocker ,  Markus Vester

    发明人： Jürgen Nistler ,  Stefan Stocker ,  Markus Vester

    IPC分类号： G01R33/20 ,  G01V3/00 ,  H01F5/00

    CPC分类号： G01R33/385 ,  G01R33/34046 ,  G01R33/34076 ,  G01R33/422

    摘要： In one aspect, a generator for generating time-variable magnetic fields is provided. The generator includes a gradient coil having conductors extending in an area defined by a hollow first cylinder, and having no conductors in a central area of the hollow first cylinder, the central area defined by the volume of a second cylinder arranged coaxially with and inside the first cylinder, the second cylinder having a diameter of one third the diameter of the first cylinder. The generator also includes a high frequency shielding device enclosing the central area but not the conductors, a high frequency antenna arranged in the central area; and a coaxial connecting cable operatively connected to the high frequency antenna arranged along a longitudinal axis of the first and second cylinder, the connecting cable penetrating the high frequency shielding device at a plurality of locations.

    摘要翻译： 一方面，提供了一种用于产生时变磁场的发生器。 发电机包括一个梯度线圈，其具有在由中空的第一气缸限定的区域中延伸的导体，并且在中空的第一气缸的中心区域中不具有导体，中心区域由第二气缸的体积限定， 第一气缸，第二气缸的直径为第一气缸直径的三分之一。 发电机还包括围绕中心区而不是导体的高频屏蔽装置，布置在中心区域的高频天线; 以及可操作地连接到沿着第一和第二气缸的纵向轴线布置的高频天线的同轴连接电缆，连接电缆在多个位置处穿透高频屏蔽装置。

    Magnetic resonance device with a high frequency shield having a high frequency short circuit to the circuits boundary surface of the basic field magnet
    9.
    发明授权
    Magnetic resonance device with a high frequency shield having a high frequency short circuit to the circuits boundary surface of the basic field magnet 失效
    具有高频屏蔽的磁共振装置具有与基本场磁体的电路边界面的高频短路

    公开(公告)号：US07098661B2

    公开(公告)日：2006-08-29

    申请号：US10957435

    申请日：2004-10-01

    申请人： Jürgen Nistler ,  Stefan Stocker ,  Markus Vester

    发明人： Jürgen Nistler ,  Stefan Stocker ,  Markus Vester

    IPC分类号： G01V3/00

    CPC分类号： G01R33/34046 ,  G01R33/34076 ,  G01R33/385 ,  G01R33/56518

    摘要： A magnetic resonance device with a cavity and with a basic field magnet and a gradient coil system, with the basic field magnet having a cavity that is bounded by an electrically conductive boundary surface of the basic field magnet and in which the gradient coil system is arranged, containing the following features: the gradient coil system has at least two structurally separate units with a clearance between them, with each of the units being enclosed by the high-frequency shield; the high-frequency shield has a short clearance from the boundary surface such that, because of the capacitive coupling between the high-frequency shield and the boundary surface, the high-frequency shield has a high-frequency short circuit to the boundary surface, so that the boundary surface is a surface that is always available for the high-frequency return flow.

    摘要翻译： 一种具有空腔并具有基本场磁体和梯度线圈系统的磁共振装置，其中基本场磁体具有由基本场磁体的导电边界面界定的空腔，其中布置有梯度线圈系统 包含以下特征：梯度线圈系统具有至少两个结构上分离的单元，它们之间具有间隙，每个单元由高频屏蔽包围; 高频屏蔽与边界面间隔很短，由于高频屏蔽与边界面之间的电容耦合，高频屏蔽层与边界面有高频短路，所以 边界面是始终可用于高频回流的表面。