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    Magnetic resonance apparatus with an RF antenna unit and a gradient coil unit
    1.
    发明申请
    Magnetic resonance apparatus with an RF antenna unit and a gradient coil unit 有权
    具有RF天线单元和梯度线圈单元的磁共振设备

    公开(公告)号：US20060038566A1

    公开(公告)日：2006-02-23

    申请号：US11208185

    申请日：2005-08-18

    申请人： Ralph Kimmlingen ,  Razvan Lazar ,  Jurgen Nistler ,  Wolfgang Renz ,  Markus Vester

    发明人： Ralph Kimmlingen ,  Razvan Lazar ,  Jurgen Nistler ,  Wolfgang Renz ,  Markus Vester

    IPC分类号： G01V3/00

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

    摘要： A magnetic resonance apparatus has an RF antenna unit, a gradient coil unit and an RF shield, the conductor structures of which are independent of one another. The RF shield is arranged between the RF antenna unit and the gradient coil unit, a first RF field return volume is arranged between RF the antenna unit (1, 29, 55A, and the gradient coil unit, the RF field return volume closes RF magnetic field lines of the RF antenna unit and is bordered by the RF shield on the side of the gradient coil unit. The conductor structure of the gradient coil unit occupies a first region. A second conductor-free region is within the first region, on the side facing the RF antenna unit, between a primary gradient coil unit and a secondary shim gradient coil unit of the gradient coil unit. The second conductor-free region is at least partially surrounded by the conductor structure of the gradient coil unit and is fashioned as a second RF field return volume in connection with the first RF field return volume. The RF shield proceeds between the RF field return volumes and the conductor structure of the gradient coil unit. The RF antenna unit is closer to the data acquisition region of the magnetic resonance apparatus than the gradient coil unit.

    摘要翻译： 磁共振装置具有RF天线单元，梯度线圈单元和RF屏蔽，其导体结构彼此独立。 RF屏蔽设置在RF天线单元和梯度线圈单元之间，RF天线单元（1,29,55A和梯度线圈单元之间）之间布置第一RF场返回音量，RF场返回音量关闭RF RF天线单元的磁场线，并且由梯形线圈单元侧的RF屏蔽界定，梯度线圈单元的导体结构占据第一区域，第二无导体区域在第一区域内，在 面向RF天线单元的一侧，梯度线圈单元的主梯度线圈单元和次级斜面梯形线圈单元之间，第二无导体区域至少部分地被梯度线圈单元的导体结构包围，并被形成 作为与第一RF场返回体积相关的第二RF场返回体积，RF屏蔽在RF场返回体积和梯度线圈单元的导体结构之间进行，RF天线单元更靠近 e数据采集区域比梯形线圈单元。

    Magnetic resonance apparatus with an RF antenna unit and a gradient coil unit
    2.
    发明授权
    Magnetic resonance apparatus with an RF antenna unit and a gradient coil unit 有权
    具有RF天线单元和梯度线圈单元的磁共振设备

    公开(公告)号：US07230427B2

    公开(公告)日：2007-06-12

    申请号：US11208185

    申请日：2005-08-18

    申请人： Ralph Kimmlingen ,  Razvan Lazar ,  Jürgen Nistler ,  Wolfgang Renz ,  Markus Vester

    发明人： Ralph Kimmlingen ,  Razvan Lazar ,  Jürgen Nistler ,  Wolfgang Renz ,  Markus Vester

    IPC分类号： G01V3/00

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

    摘要： A magnetic resonance apparatus has an RF antenna unit, a gradient coil unit and an RF shield, the conductor structures of which are independent of one another. The RF shield is arranged between the RF antenna unit and the gradient coil unit, a first RF field return volume is arranged between RF the antenna unit (1, 29, 55A, and the gradient coil unit, the RF field return volume closes RF magnetic field lines of the RF antenna unit and is bordered by the RF shield on the side of the gradient coil unit. The conductor structure of the gradient coil unit occupies a first region. A second conductor-free region is within the first region, on the side facing the RF antenna unit, between a primary gradient coil unit and a secondary shim gradient coil unit of the gradient coil unit. The second conductor-free region is at least partially surrounded by the conductor structure of the gradient coil unit and is fashioned as a second RF field return volume in connection with the first RF field return volume. The RF shield proceeds between the RF field return volumes and the conductor structure of the gradient coil unit. The RF antenna unit is closer to the data acquisition region of the magnetic resonance apparatus than the gradient coil unit.

    摘要翻译： 磁共振装置具有RF天线单元，梯度线圈单元和RF屏蔽，其导体结构彼此独立。 RF屏蔽设置在RF天线单元和梯度线圈单元之间，RF天线单元（1,29,55A和梯度线圈单元之间）之间布置第一RF场返回音量，RF场返回音量关闭RF RF天线单元的磁场线，并且由梯形线圈单元侧的RF屏蔽界定，梯度线圈单元的导体结构占据第一区域，第二无导体区域在第一区域内，在 面向RF天线单元的一侧，梯度线圈单元的主梯度线圈单元和次级斜面梯形线圈单元之间，第二无导体区域至少部分地被梯度线圈单元的导体结构包围，并被形成 作为与第一RF场返回体积相关的第二RF场返回体积，RF屏蔽在RF场返回体积和梯度线圈单元的导体结构之间进行，RF天线单元更靠近 e数据采集区域比梯形线圈单元。

    Magnetic resonance system
    3.
    发明申请
    Magnetic resonance system 有权
    磁共振系统

    公开(公告)号：US20050174115A1

    公开(公告)日：2005-08-11

    申请号：US10514388

    申请日：2003-05-06

    申请人： Razvan Lazar ,  Jurgen Nistler ,  Wolfgang Renz ,  Markus Vester

    发明人： Razvan Lazar ,  Jurgen Nistler ,  Wolfgang Renz ,  Markus Vester

    IPC分类号： G01R33/36 ,  A61B5/055 ,  G01R33/34 ,  G01R33/3415 ,  G01V3/00

    CPC分类号： G01R33/3415 ,  G01R33/34046 ,  G01R33/3642 ,  G01R33/365 ,  G01R33/5659

    摘要： A magnetic resonance system has a primary RF transmitting antenna and at least one secondary RF transmitting antenna. Both antennas generate RF excitation fields in an examination volume. At least one of the primary and secondary transmitting antennas has a control element connected thereto, which allows an amplitude ratio and/or a phase difference of the respective excitation currents in the antennas to be set by a control and evaluation device. The control and evaluation device causes the excitation current in the secondary transmitting antenna to have a smaller amplitude than the excitation current in the primary transmitting antenna, so that the excitation field generated by the secondary transmitting antenna has a smaller spatial extent in the examination volume than the excitation field generated by the primary transmitting antenna.

    摘要翻译： 磁共振系统具有主RF发射天线和至少一个次RF发射天线。 两个天线在检查体积中产生RF激励场。 主发射天线和次发射天线中的至少一个具有连接到其上的控制元件，这允许通过控制和评估装置设置天线中的相应激励电流的振幅比和/或相位差。 控制和评估装置使得次级发射天线中的激励电流具有比主发射天线中的激励电流更小的振幅，使得由次发射天线产生的激励场在检查体积中具有较小的空间范围， 由主发射天线产生的激励场。

    Detection unit including an RF transceiver system and a pet detector
    4.
    发明申请
    Detection unit including an RF transceiver system and a pet detector 有权
    检测单元包括RF收发器系统和宠物检测器

    公开(公告)号：US20090206836A1

    公开(公告)日：2009-08-20

    申请号：US11902584

    申请日：2007-09-24

    申请人： Ludwig Eberler ,  Razvan Lazar ,  Jurgen Nistler ,  Wolfgang Renz ,  Norbert Rietsch

    发明人： Ludwig Eberler ,  Razvan Lazar ,  Jurgen Nistler ,  Wolfgang Renz ,  Norbert Rietsch

    IPC分类号： G01R33/20 ,  G01T1/166 ,  G01R33/44

    CPC分类号： G01R33/28 ,  A61B5/0035 ,  A61B5/055 ,  G01R33/481 ,  G01T1/1603

    摘要： A detection unit is disclosed for arrangement in the main magnet of an MR device, which has both an RF transceiver system and a PET detector. In at least one embodiment the RF transceiver system is divided into two parts and the two parts are arranged upstream and downstream of the PET detector in the longitudinal direction of the patient tunnel. The RF transceiver system and PET detector are applied to the same image volume. In at least one other embodiment, an MR device is equipped with the detection unit, and in at least one other embodiment, a method operates the detection unit.

    摘要翻译： 公开了用于布置在MR设备的主磁体中的检测单元，其具有RF收发器系统和PET检测器。 在至少一个实施例中，RF收发器系统被分成两部分，并且两个部分被布置在患者隧道的纵向上的PET检测器的上游和下游。 RF收发器系统和PET检测器应用于相同的图像体积。 在至少另一个实施例中，MR装置配备有检测单元，并且在至少一个其它实施例中，一种方法操作检测单元。

    Device for superimposed MRI and PET imaging
    5.
    发明申请
    Device for superimposed MRI and PET imaging 失效
    叠加MRI和PET成像装置

    公开(公告)号：US20080139924A1

    公开(公告)日：2008-06-12

    申请号：US11984479

    申请日：2007-11-19

    申请人： Ludwig Eberler ,  Razvan Lazar ,  Jurgen Nistler ,  Wolfgang Renz ,  Norbert Rietsch

    发明人： Ludwig Eberler ,  Razvan Lazar ,  Jurgen Nistler ,  Wolfgang Renz ,  Norbert Rietsch

    IPC分类号： A61B5/055

    CPC分类号： G01R33/28 ,  A61B5/0035 ,  A61B5/055 ,  A61B6/037 ,  G01R33/481 ,  G01T1/1603

    摘要： A device for superposed magnetic resonance tomography and positron emission tomography imaging is disclosed. In at least one embodiment, the device includes a magnetic resonance tomography magnet, which defines a longitudinal axis; a magnetic resonance tomography gradient coil, arranged radially within the magnetic resonance tomography magnet; a magnetic resonance tomography RF coil, arranged radially within the magnetic resonance tomography gradient coil; and a multiplicity of positron emission tomography detection units, arranged in pairs lying opposite to one another about the longitudinal axis. In at least one embodiment, the many positron emission tomography detection units are arranged radially within the magnetic resonance tomography gradient coil and are arranged along the longitudinal axis next to the magnetic resonance tomography RF coil.

    摘要翻译： 公开了用于叠加磁共振断层扫描和正电子发射断层摄影成像的装置。 在至少一个实施例中，该装置包括限定纵轴的磁共振断层摄影磁体; 磁共振断层摄影梯度线圈，位于磁共振断层摄影磁体内; 磁共振断层摄影RF线圈，径向设置在磁共振断层扫描梯度线圈内; 以及多个正电子发射断层摄影检测单元，成对地布置成围绕纵向轴线彼此相对。 在至少一个实施例中，许多正电子发射断层摄影检测单元径向布置在磁共振断层扫描梯度线圈内，并且沿着纵向轴线布置在磁共振断层摄影RF线圈旁边。

    Field generating unit of a combined MR/PET system
    7.
    发明申请
    Field generating unit of a combined MR/PET system 有权
    组合MR / PET系统的场产生单元

    公开(公告)号：US20080088309A1

    公开(公告)日：2008-04-17

    申请号：US11905250

    申请日：2007-09-28

    申请人： Ludwig Eberler ,  Razvan Lazar ,  Jurgen Nistler ,  Wolfgang Renz ,  Norbert Rietsch

    发明人： Ludwig Eberler ,  Razvan Lazar ,  Jurgen Nistler ,  Wolfgang Renz ,  Norbert Rietsch

    IPC分类号： G01R33/34

    CPC分类号： G01R33/3415 ,  G01R33/481

    摘要： An RF antenna arrangement of a combined MR/PET system is disclosed. In at least one embodiment, the RF antenna arrangement includes a first part installed in the examination tunnel in a fashion fixed to the system such that it is arranged underneath the couch board when the latter is introduced, and a second part, which can be placed onto the couch board and be introduced into and withdrawn from the examination tunnel together with the couch board. In at least one embodiment, the second part is of dimensionally stable design and has a clear cross section that is adapted to the object to be examined. Consequently, the time outlay for applying the RF antenna is reduced, and the fixed position of the RF antenna enables a correction of the attenuation of gamma rays. Furthermore, a number of second parts having various diameters can be provided.

    摘要翻译： 公开了一种组合MR / PET系统的RF天线装置。 在至少一个实施例中，RF天线布置包括以固定到系统的方式安装在检查隧道中的第一部分，使得它被布置在沙发板的下方，当其被引入时，第二部分可以被放置 进入沙发板，并与沙发板一起引入和从检查隧道中取出。 在至少一个实施例中，第二部分是尺寸稳定的设计，并且具有适于被检查物体的清晰的横截面。 因此，减少了施加RF天线的时间费用，并且RF天线的固定位置能够校正伽马射线的衰减。 此外，可以提供多个具有各种直径的第二部分。

    Magnetic resonance system
    8.
    发明授权
    Magnetic resonance system 有权
    磁共振系统

    公开(公告)号：US07053615B2

    公开(公告)日：2006-05-30

    申请号：US10514388

    申请日：2003-05-06

    申请人： Razvan Lazar ,  Jürgen Nistler ,  Wolfgang Renz ,  Markus Vester

    发明人： Razvan Lazar ,  Jürgen Nistler ,  Wolfgang Renz ,  Markus Vester

    IPC分类号： G01V3/00

    CPC分类号： G01R33/3415 ,  G01R33/34046 ,  G01R33/3642 ,  G01R33/365 ,  G01R33/5659

    摘要： A magnetic resonance system has a primary RF transmitting antenna and at least one secondary RF transmitting antenna. Both antennas generate RF excitation fields in an examination volume. At least one of the primary and secondary transmitting antennas has a control element connected thereto, which allows an amplitude ratio and/or a phase difference of the respective excitation currents in the antennas to be set by a control and evaluation device. The control and evaluation device causes the excitation current in the secondary transmitting antenna to have a smaller amplitude than the excitation current in the primary transmitting antenna, so that the excitation field generated by the secondary transmitting antenna has a smaller spatial extent in the examination volume than the excitation field generated by the primary transmitting antenna.

    摘要翻译： 磁共振系统具有主RF发射天线和至少一个次RF发射天线。 两个天线在检查体积中产生RF激励场。 主发射天线和次发射天线中的至少一个具有连接到其上的控制元件，这允许通过控制和评估装置设置天线中的相应激励电流的振幅比和/或相位差。 控制和评估装置使得次级发射天线中的激励电流具有比主发射天线中的激励电流更小的振幅，使得由次发射天线产生的激励场在检查体积中具有较小的空间范围， 由主发射天线产生的激励场。

    Magnetic resonance antenna
    9.
    发明申请
    Magnetic resonance antenna 有权
    磁共振天线

    公开(公告)号：US20050127914A1

    公开(公告)日：2005-06-16

    申请号：US10810364

    申请日：2004-03-26

    申请人： Ludwig Eberler ,  Razvan Lazar ,  Jurgen Nistler ,  Gunther Zebelein

    发明人： Ludwig Eberler ,  Razvan Lazar ,  Jurgen Nistler ,  Gunther Zebelein

    IPC分类号： G01R33/34 ,  G01R33/36 ,  G01V3/00

    CPC分类号： G01R33/3657 ,  G01R33/34046

    摘要： A magnetic resonance antenna has longitudinal antenna rods in a birdcage structure, and antenna ferrules connecting the longitudinal antenna rods at their ends in terms of radio-frequency. The magnetic resonance antenna has a number of radio-frequency switching elements that interrupt, in terms of radio-frequency, at least one part of the longitudinal antenna rod to detune the eigen-resonance frequency of the antenna with respect to an operating magnetic resonance frequency. For this purpose, the magnetic resonance antenna is provided with two switching lines, directed to the radio-frequency switching elements from outside of the birdcage structure, the switching lines having a ring line connected thereto running annularly on or in the birdcage structure and transverse to the longitudinal antenna rods.

    摘要翻译： 磁共振天线具有鸟笼结构中的纵向天线杆，以及在射频方面连接纵向天线杆的端部处的天线插芯。 磁共振天线具有多个射频切换元件，其以射频方式中断纵向天线杆的至少一部分，以相对于工作磁共振频率去除天线的本征谐振频率 。 为此，磁共振天线设置有从鸟笼结构的外部引向射频开关元件的两条开关线，开关线具有连接到其上的环形线环绕在鸟笼结构上或在鸟笼结构中并横向于 纵向天线杆。