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。

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。

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。

公开(公告)号：US20080068017A1

公开(公告)日：2008-03-20

申请号：US11882928

申请日：2007-08-07

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

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

IPC分类号： G01R33/32

CPC分类号： G01T1/2985 ,  A61B6/037 ,  A61B6/4417 ,  G01R33/481 ,  G01T1/1603

摘要： Detection unit is disclosed for arrangement inside a cylindrical patient receptacle of a magnetic resonance apparatus. In at least one embodiment, the detection unit includes an annular PET detector arrangement with PET detector blocks, and a radiofrequency coil arrangement, arranged coaxially inside the PET detector arrangement and including longitudinal conductors, the longitudinal conductors being guided at least in sections along interspaces between mutually spaced apart detector blocks.

摘要翻译： 公开了用于布置在磁共振装置的圆柱形患者容器内的检测单元。 在至少一个实施例中，检测单元包括具有PET检测器块的环形PET检测器装置和同轴地布置在PET检测器装置内并包括纵向导体的射频线圈装置，纵向导体至少沿着 相互间隔开的检测器块。

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。

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。

公开(公告)号：US20090005671A1

公开(公告)日：2009-01-01

申请号：US12213656

申请日：2008-06-23

申请人： Ludwig Kreischer ,  Jurgen Nistler ,  Martin Rausch ,  Wolfgang Renz ,  Norbert Rietsch

发明人： Ludwig Kreischer ,  Jurgen Nistler ,  Martin Rausch ,  Wolfgang Renz ,  Norbert Rietsch

IPC分类号： A61B5/055

CPC分类号： G01R33/481 ,  A61B6/037 ,  A61B6/4417 ,  G01R33/56509

摘要： A combined positron emission tomography/magnetic resonance imaging apparatus for imaging organs of an examination object in an examination space is disclosed, including a positron emission tomography apparatus having at least one radiation detector, and a magnetic resonance imaging apparatus having at least one gradient coil and a radio-frequency antenna device. In order to prevent mechanical oscillations being induced in the PET gantry by the gradient coil, at least one embodiment of the combined position emission tomography/magnetic resonance imaging apparatus is developed further in that a first molding is provided, whose surface coincides with the inner shell of the at least one gradient coil, and a second molding is provided, whose surface coincides with the outer shell of the radiation detector, the distance between the two shells being virtually constant over the circumference of the shells, and a vacuum seal being arranged in each case along at least a first and a second circumferential line such that a closed cavity is formed between the vacuum seals.

摘要翻译： 公开了一种用于对检查空间中的检查对象的器官进行成像的组合正电子发射断层摄影/磁共振成像装置，包括具有至少一个放射线检测器的正电子发射断层摄影装置和具有至少一个梯度线圈的磁共振成像装置， 射频天线装置。 为了防止由梯度线圈在PET机架中引起的机械振荡，组合位置发射断层摄影/磁共振成像装置的至少一个实施例被进一步开发，其中提供了第一模制件，其表面与内壳重合 的至少一个梯度线圈，并且提供第二模制件，其表面与辐射检测器的外壳重合，两个壳体之间的距离在壳体的圆周上基本上恒定，并且真空密封件布置在 每个壳体沿着至少第一和第二圆周线，使得在真空密封件之间形成闭合腔。

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。

公开(公告)号：US20060208736A1

公开(公告)日：2006-09-21

申请号：US11340216

申请日：2006-01-26

申请人： Jurgen Nistler ,  Wolfgang Renz

发明人： Jurgen Nistler ,  Wolfgang Renz

IPC分类号： G01V3/00

CPC分类号： A61B5/055 ,  G01R33/34007 ,  G01R33/34046 ,  G01R33/3628 ,  G01R33/385

摘要： A magnetic resonance apparatus has an integrated gradient and radio frequency coil unit that includes at least one antenna rod with a conductor and a gradient coil unit. At least one electrical connection exists between the conductor and an electrical contact region arranged at an adjoining region of the gradient coil unit. The electrical connection is formed by a flexible circuit board that is electrically connected both with the conductor and with the contact region. Such an electrical connection of the antenna rod is insensitive to strong vibrations.

摘要翻译： 磁共振装置具有集成的梯度和射频线圈单元，其包括至少一个具有导体的天线杆和梯度线圈单元。 在导体与布置在梯度线圈单元的相邻区域的电接触区域之间至少存在一个电连接。 电连接由与导体和接触区域电连接的柔性电路板形成。 天线杆的这种电气连接对强烈的振动是不敏感的。

公开(公告)号：US20080267478A1

公开(公告)日：2008-10-30

申请号：US12081560

申请日：2008-04-17

申请人： Michael Eberler ,  Jurgen Nistler ,  Wolfgang Renz ,  Gunther Zebelein

发明人： Michael Eberler ,  Jurgen Nistler ,  Wolfgang Renz ,  Gunther Zebelein

IPC分类号： G06K9/00

CPC分类号： G01T1/1603 ,  G01R33/34046 ,  G01R33/481

摘要： A sandwich structure which attenuates the PET radiation only very slightly, is used as a support tube for the transmit antenna. In at least one embodiment, it includes a thin strong inner wall, a likewise thin and strong outer wall and an interior of the support tube which is of the honeycomb type or is made of foam material.

摘要翻译： 仅将极小的PET辐射衰减的夹层结构用作发射天线的支撑管。 在至少一个实施例中，它包括薄的强内壁，同样薄且坚固的外壁和支撑管的内部，其为蜂窝型或由泡沫材料制成。