利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

7 条记录 (耗时 0.01 秒)

    ELECTRONIC LOAD SIMULATOR DEVICE FOR TESTING RF COILS
    1.
    发明申请
    ELECTRONIC LOAD SIMULATOR DEVICE FOR TESTING RF COILS 有权
    用于测试射频线圈的电子负载模拟器装置

    公开(公告)号：US20110163757A1

    公开(公告)日：2011-07-07

    申请号：US12997005

    申请日：2009-06-10

    申请人： Cecilia Possanzini ,  Marinus Ludovicus Adrianus Vrinten ,  Marco Boutelje

    发明人： Cecilia Possanzini ,  Marinus Ludovicus Adrianus Vrinten ,  Marco Boutelje

    IPC分类号： G01R31/06

    CPC分类号： G01R33/3642 ,  G01R33/58

    摘要： The invention relates to a magnetic resonance coil testing arrangement (150) comprising an electric circuit (152; 302) for emulating an electrical load to a magnetic resonance coil, wherein the electric circuit (152; 302) is adapted for emulating an electrical load corresponding to an electrical load induced by organic tissue at the magnetic resonance frequency of the magnetic resonance coil.

    摘要翻译： 本发明涉及一种磁共振线圈测试装置（150），其包括用于将电负载仿真到磁共振线圈的电路（152; 302），其中所述电路（152; 302）适于仿真相应的电负载 涉及在磁共振线圈的磁共振频率下由有机组织引起的电负载。

    Compact and flexible radio frequency coil arrays
    2.
    发明授权
    Compact and flexible radio frequency coil arrays 失效
    紧凑灵活的射频线圈阵列

    公开(公告)号：US07804300B2

    公开(公告)日：2010-09-28

    申请号：US12089718

    申请日：2006-09-15

    申请人： Cecilia Possanzini

    发明人： Cecilia Possanzini

    IPC分类号： G01V3/00

    CPC分类号： G01R33/3415 ,  G01R33/34007 ,  G01R33/341

    摘要： A radio frequency coils array includes a plurality of conductive RF loops (62a, 62b, 62c, 62d, 162a, 162b, 262a, 262b, 362a, 362b, 362c, 462a, 462b, 462c, 562a, 562b) configured to excite or receive magnetic resonance signals, and a plurality of electronics modules (64a, 64b, 64c, 64d, 164a, 164b, 264a, 264b, 364a, 364b, 364c, 464a, 464b, 64c, 564a, 564b) corresponding to the plurality of conductive RF loops. The electronics modules are grouped together in a compact electronics region (66, 166, 266, 366, 466, 66). Each RF coil is operatively connected with a corresponding electronics module. Each electronics module includes at least a pre-amplifier.

    摘要翻译： 射频线圈阵列包括被配置为激发或接收的多个导电RF环路（62a，62b，62c，62d，162a，162b，262a，262b，362a，362b，362c，462a，462b，462c，562a，562b） 磁共振信号，以及对应于多个导电RF的多个电子模块（64a，64b，64c，64d，164a，164b，264a，264b，364a，364b，364c，464a，464b，64c，564a，564b） 循环。 电子模块在紧凑的电子器件区域（66,166,266,366,466,66）中组合在一起。 每个RF线圈与相应的电子模块可操作地连接。 每个电子模块至少包括前置放大器。

    System of electric coils for transmitting and receiving radio-frequency magnetic fields in a magnetic-resonance imaging apparatus, and magnetic-resonance imaging apparatus provided with such a system of electric coils
    3.
    发明授权
    System of electric coils for transmitting and receiving radio-frequency magnetic fields in a magnetic-resonance imaging apparatus, and magnetic-resonance imaging apparatus provided with such a system of electric coils 失效
    用于在磁共振成像装置中发射和接收射频磁场的电线圈系统和具有这种电线圈系统的磁共振成像装置

    公开(公告)号：US07602188B2

    公开(公告)日：2009-10-13

    申请号：US11572714

    申请日：2005-07-12

    申请人： Cecilia Possanzini ,  Marinus Johannes Adrianus Maria Van Helvoort ,  Jan Bertus Marten Warntjes ,  Robert Paul Kleihorst

    发明人： Cecilia Possanzini ,  Marinus Johannes Adrianus Maria Van Helvoort ,  Jan Bertus Marten Warntjes ,  Robert Paul Kleihorst

    IPC分类号： G01V3/00

    CPC分类号： G01R33/341

    摘要： The invention relates to a magnetic-resonance imaging (MRI) apparatus comprising an electrical coil system (17) for transmitting and receiving a radio-frequency (RF) magnetic field from an examination volume (3) of the MRI apparatus. The electrical coil system (17) comprises at least one surface coil (35) which extends substantially in a plane. The surface coil is used for transmitting and/or receiving a RF magnetic field which is oriented substantially perpendicularly to the plane of the surface coil (35). The surface coil (35) has a main coil axis (37). When the MRI apparatus is in use, the main coil axis (37) extends substantially parallel to a main magnetic field in the examination volume (3) of the MRI apparatus. On both sides of the main coil axis (37), the surface coil (35) comprises an electrically conducting element (39) which extends substantially parallel to the main coil axis (37). To provide a surface coil (35) which transmits more homogeneous RF magnetic fields and/or has a more homogeneous sensitivity for received RF magnetic fields than known surface coils, at least one of the electrically conducting elements (39) of the surface coil (35) comprises at least two electric conductors (41). With respect to their distance to the main coil axis (37), these electric conductors (41) are positioned at a relatively short distance from each other. In the plane of the surface coil (35), the electric conductors (41)extend substantially parallel to the main coil axis (37) of the surface coil (35).

    摘要翻译： 本发明涉及一种磁共振成像（MRI）装置，其包括用于从MRI装置的检查体积（3）发射和接收射频（RF）磁场的电线圈系统（17）。 电线圈系统（17）包括基本上在平面中延伸的至少一个表面线圈（35）。 表面线圈用于传输和/或接收基本上垂直于表面线圈（35）的平面定向的RF磁场。 表面线圈（35）具有主线圈轴（37）。 当使用MRI装置时，主线圈轴线（37）基本上平行于MRI装置的检查体积（3）中的主磁场延伸。 在主线圈轴线（37）的两侧，表面线圈（35）包括基本上平行于主线圈轴线（37）延伸的导电元件（39）。 为了提供表面线圈（35），所述表面线圈（35）传递更均匀的RF磁场和/或对已接收的RF磁场具有比已知表面线圈更均匀的灵敏度，表面线圈（35）的至少一个导电元件（39） ）包括至少两个电导体（41）。 对于它们到主线圈轴线（37）的距离，这些电导体（41）位于彼此相对短的距离处。 在表面线圈（35）的平面中，电导体（41）基本上平行于表面线圈（35）的主线圈轴线（37）延伸。

    Compact and Flexible Radio Frequency Coil Arrays
    4.
    发明申请
    Compact and Flexible Radio Frequency Coil Arrays 失效
    紧凑灵活的射频线圈阵列

    公开(公告)号：US20080238424A1

    公开(公告)日：2008-10-02

    申请号：US12089718

    申请日：2006-09-15

    申请人： Cecilia Possanzini

    发明人： Cecilia Possanzini

    IPC分类号： G01R33/341 ,  H01Q21/00

    CPC分类号： G01R33/3415 ,  G01R33/34007 ,  G01R33/341

    摘要： A radio frequency coils array includes a plurality of conductive RF loops (62a, 62b, 62c, 62d, 162a, 162b, 262a, 262b, 362a, 362b, 362c, 462a, 462b, 462c, 562a, 562b) configured to excite or receive magnetic resonance signals, and a plurality of electronics modules (64a, 64b, 64c, 64d, 164a, 164b, 264a, 264b, 364a, 364b, 364c, 464a, 464b, 64c, 564a, 564b) corresponding to the plurality of conductive RF loops. The electronics modules are grouped together in a compact electronics region (66, 166, 266, 366, 466, 66). Each RF coil is operatively connected with a corresponding electronics module. Each electronics module includes at least a pre-amplifier.

    摘要翻译： 射频线圈阵列包括多个导电RF回路（62a，62b，62c，62d，162a，162b，262a，262b，362a，362b，362c，462a，462 b，462c，562a，562b）被配置为激发或接收磁共振信号，以及多个电子模块（64a，64b，64c，64d，164a，164b，264a，264b ，364a，364b，364c，464a，464b，64c，564a，564b）对应于多个导电RF环路。 电子模块在紧凑的电子器件区域（66,166,266,366,466,66）中组合在一起。 每个RF线圈与相应的电子模块可操作地连接。 每个电子模块至少包括前置放大器。

    System of Electric Coils for Transmitting and Receiving Radio-Frequency Magnetic Fileds in a Magnetic-Resonance Imaging Apparatus, and Magnetic-Resonance Imaging Apparatus Provided with Such a System of Electric Coils
    5.
    发明申请
    System of Electric Coils for Transmitting and Receiving Radio-Frequency Magnetic Fileds in a Magnetic-Resonance Imaging Apparatus, and Magnetic-Resonance Imaging Apparatus Provided with Such a System of Electric Coils 失效
    用于在磁共振成像装置中发射和接收射频磁片的电线系统和具有这种电线系统的磁共振成像装置

    公开(公告)号：US20080054903A1

    公开(公告)日：2008-03-06

    申请号：US11572714

    申请日：2005-07-12

    申请人： Cecilia Possanzini ,  Marinus Johannes Adrianus Van Helvoort ,  Jan Warntjes ,  Robert Kleihorst

    发明人： Cecilia Possanzini ,  Marinus Johannes Adrianus Van Helvoort ,  Jan Warntjes ,  Robert Kleihorst

    IPC分类号： G01R33/341

    CPC分类号： G01R33/341

    摘要： The invention relates to a magnetic resonance imaging (MRI) apparatus comprising an electrical coil system (17) for transmitting and receiving a radio-frequent (RF) magnetic field from an examination volume (3) of the MRI apparatus. The electrical coil system (17) comprises at least one surface coil (35) which substantially extends in a plane. The surface coil serves for transmitting and/or receiving an RF magnetic field which is substantially oriented perpendicular to the plane of the surface coil (35). The surface coil (35) has a main coil axis (37). When the MRI apparatus is in use the main coil axis (37) extends substantially parallel to a main magnetic field in the examination volume (3) of the MRI apparatus. On both sides of the main coil axis (37) the surface coil (35) comprises an electrically conducting element (39) which extends substantially parallel to the main coil axis (37). To provide a surface coil (35) which transmits more homogeneous RF magnetic fields and/or has a more homogeneous sensitivity for received RF magnetic fields than known surface coils, at least one of the electrically conducting elements (39) of the surface coil (35) comprises at least two electrical conductors (41). With respect to their distance to the main coil axis (37) these electrical conductors (41) are positioned at a relatively short distance from each other. In the plane of the surface coil (35) the electrical conductors (41) substantially extend parallel to the main coil axis (37) of the surface coil (35).

    摘要翻译： 本发明涉及一种磁共振成像（MRI）装置，其包括用于从MRI装置的检查体积（3）发射和接收射频（RF）磁场的电线圈系统（17）。 电线圈系统（17）包括基本上在平面中延伸的至少一个表面线圈（35）。 表面线圈用于传输和/或接收基本上垂直于表面线圈（35）的平面定向的RF磁场。 表面线圈（35）具有主线圈轴（37）。 当MRI装置使用时，主线圈轴线（37）基本上平行于MRI装置的检查体积（3）中的主磁场延伸。 在主线圈轴（37）的两侧，表面线圈（35）包括基本上平行于主线圈轴线（37）延伸的导电元件（39）。 为了提供表面线圈（35），所述表面线圈（35）传递更均匀的RF磁场和/或对已接收的RF磁场具有比已知表面线圈更均匀的灵敏度，表面线圈（35）的至少一个导电元件（39） ）包括至少两个电导体（41）。 对于它们到主线圈轴线（37）的距离，这些电导体（41）位于彼此相对短的距离处。 在表面线圈（35）的平面中，电导体（41）基本上平行于表面线圈（35）的主线圈轴线（37）延伸。