公开(公告)号：US20090096456A1

公开(公告)日：2009-04-16

申请号：US12243056

申请日：2008-10-01

Applicant: Stephan Biber ,  Helmut Greim ,  Joerg Rothard ,  Markus Vester

Inventor： Stephan Biber ,  Helmut Greim ,  Joerg Rothard ,  Markus Vester

IPC: G01R33/36

CPC classification number: G01R33/3415 ,  A61B5/055 ,  G01R33/34046 ,  G01R33/3642 ,  G01R33/3692

Abstract: An arrangement to transmit magnetic resonance signals has a local coil composed of a number of individual antennas for acquisition of radio-frequency signals of a magnetic resonance examination. Preamplifiers amplify the radio-frequency signals, and a transmission device transmits the radio-frequency signals from the local coil to the preamplifiers. The transmission device is fashioned as a readout coil and has a number of individual antennas. The individual antennas of the readout coil are magnetically coupled with the individual antennas of the local coil, with the individual antennas of the local coil and the individual antennas of the readout coil forming a linear MIMO transmission system describable by a transmission matrix.

Abstract translation: 用于发送磁共振信号的装置具有由用于获取磁共振检查的射频信号的多个单独天线组成的局部线圈。 前置放大器放大射频信号，并且传输设备将来自本地线圈的射频信号发送到前置放大器。 传输装置被形成为读出线圈并且具有多个单独的天线。 读出线圈的各个天线与本地线圈的各个天线磁耦合，本地线圈的各个天线和读出线圈的各个天线形成可由传输矩阵描述的线性MIMO传输系统。

公开(公告)号：US07367839B2

公开(公告)日：2008-05-06

申请号：US11493105

申请日：2006-07-25

Applicant: Helmut Greim ,  Jürgen Hagen

Inventor： Helmut Greim ,  Jürgen Hagen

IPC: H01R9/05 ,  H01R9/03 ,  H01R13/66 ,  H01R33/945

CPC classification number: H01R13/6625 ,  G01R33/3685 ,  H01R13/6592 ,  H01R13/7195 ,  H01R2201/12

Abstract: Feed line for at least one local coil in a magnetic resonance tomography apparatus, comprising at least one coil plug as well as at least one standing wave barrier for suppression of unwanted radio-frequency currents on a conductor cable of the feed line, with the standing wave barrier integrated into the coil plug.

Abstract translation: 在磁共振断层摄影装置中用于至少一个局部线圈的馈送线，包括至少一个线圈插头以及至少一个驻波屏障，用于抑制馈线的导体电缆上的不期望的射频电流， 波形屏障集成到线圈插头中。

公开(公告)号：US6133737A

公开(公告)日：2000-10-17

申请号：US80355

申请日：1998-05-18

Applicant: Helmut Greim

Inventor： Helmut Greim

IPC: G01R33/36 ,  A61B5/055 ,  G01R33/34 ,  H01Q1/22 ,  H01Q21/24 ,  G01V3/00

CPC classification number: G01R33/3678 ,  G01R33/34046 ,  H01Q1/22 ,  H01Q21/24

Abstract: A circularly polarizing antenna for a magnetic resonance apparatus is formed by a first linear antenna subsystem and a second antenna subsystem arranged so as to be rotated 90.degree. relative to each other. On the side of the signal terminals and each antenna subsystem has a self-contained conductor. On the side facing away from the signal terminals, the antenna subsystems have a common self-contained conductor.

Abstract translation: 用于磁共振装置的圆极化天线由第一线性天线子系统和相对于彼此旋转90度的第二天线子系统形成。 在信号端子和每个天线子系统的一侧具有独立导体。 在远离信号端子的一侧，天线子系统具有公共的独立导体。

公开(公告)号：US5260658A

公开(公告)日：1993-11-09

申请号：US802542

申请日：1991-12-05

Applicant: Helmut Greim ,  Juergen Ruhl ,  Ralph Oppelt

Inventor： Helmut Greim ,  Juergen Ruhl ,  Ralph Oppelt

IPC: G01R33/44 ,  G01R33/36 ,  G01B33/20

CPC classification number: G01R33/3628

Abstract: A circuit for detuning a resonator in a nuclear magnetic resonance imaging apparatus has an output connected to a terminal of the resonator via a high-frequency line composed of two conductors. The resonator is shortened at this terminal with a shorting capacitor that can be short-circuited for detuning the resonator. The length of the high-frequency line is shorter than one-fourth of the wavelength of a high-frequency signal having the operating frequency of the nuclear magnetic resonance imaging apparatus on the high-frequency line. For detuning the resonator the high-frequency line can be terminated at the output with a further capacitor, so that the high-frequency line acts as a short-circuit at the terminal.

Abstract translation: 用于使核磁共振成像装置中的谐振器失谐的电路具有通过由两根导体组成的高频线连接到谐振器的端子的输出端。 谐振器在该端子处被缩短，其中短路电容器可以短路以使谐振器失谐。 高频线的长度比具有高频线上的核磁共振成像装置的工作频率的高频信号的波长的四分之一短。 为了使谐振器失谐，高频线路可以在另一个电容器的输出处终止，使得高频线路作为端子处的短路。

公开(公告)号：US20160245884A1

公开(公告)日：2016-08-25

申请号：US15046840

申请日：2016-02-18

Applicant: Helmut Greim

Inventor： Helmut Greim

IPC: G01R33/341 ,  G01R33/483

CPC classification number: G01R33/341 ,  G01R33/34007 ,  G01R33/34084 ,  G01R33/3628 ,  G01R33/3657

Abstract: An MR coil is provided including at least one antenna element. The antenna element has at least one expandable conductor section with a plastic cover and a core including conductive fluid.

Abstract translation: 提供包括至少一个天线元件的MR线圈。 天线元件具有至少一个可塑性导体部分，其具有塑料盖和包括导电流体的芯。

公开(公告)号：US09274190B2

公开(公告)日：2016-03-01

申请号：US13675938

申请日：2012-11-13

Applicant: Daniel Driemel ,  Helmut Greim ,  Steffen Wolf

Inventor： Daniel Driemel ,  Helmut Greim ,  Steffen Wolf

IPC: G01V3/00 ,  G01R33/34 ,  G01R33/3415 ,  G01R33/565

CPC classification number: G01R33/34092 ,  G01R33/34007 ,  G01R33/3415 ,  G01R33/365 ,  G01R33/56518

Abstract: A local coil for a magnetic resonance tomography device includes a plurality of antenna elements. Each antenna element of the plurality of antenna elements has two conductor tracks. The conductor tracks are disposed on opposite sides of an insulator and are connected electrically conductively to one another by plated through-holes through the insulator. In areas, in which conductor tracks of at least two antenna elements of the plurality of antenna elements cross, at least one antenna element of the at least two antenna elements only has a conductor track on one side of the insulator.

Abstract translation: 用于磁共振断层摄影装置的局部线圈包括多个天线元件。 多个天线元件中的每个天线元件具有两个导体轨迹。 导体轨道设置在绝缘体的相对侧上，并且通过穿过绝缘体的电镀通孔彼此导电连接。 在多个天线元件中的至少两个天线元件的导体轨迹交叉的区域中，至少两个天线元件的至少一个天线元件仅在绝缘体的一侧具有导体轨道。

公开(公告)号：US09063199B2

公开(公告)日：2015-06-23

申请号：US13224824

申请日：2011-09-02

Applicant: Helmut Greim

Inventor： Helmut Greim

IPC: G01V3/00 ,  G01R33/36

CPC classification number: G01R33/3621 ,  G01R33/3642 ,  G01R33/365

Abstract: The present embodiments relate to a local coil for a magnetic resonance tomography system. The local coil includes a preamplifier for amplification of a signal received by the local coil from an examination object in a receive phase of the local coil. The local coil also includes a detuning device for detuning the local coil in a transmit phase of the local coil, and a rectification device for supplying voltage to the preamplifier.

Abstract translation: 本实施例涉及用于磁共振断层摄影系统的局部线圈。 本地线圈包括前置放大器，用于在本地线圈的接收阶段中从检查对象放大由局部线圈接收到的信号。 本地线圈还包括用于使局部线圈的发射相中的局部线圈失谐的失谐装置和用于向前置放大器提供电压的整流装置。

公开(公告)号：US20150130467A1

公开(公告)日：2015-05-14

申请号：US14539782

申请日：2014-11-12

Applicant: Stephan Biber ,  Helmut Greim ,  Klaus Huber ,  Sebastian Martius ,  Johanna Dorothee Schöpfer

Inventor： Stephan Biber ,  Helmut Greim ,  Klaus Huber ,  Sebastian Martius ,  Johanna Dorothee Schöpfer

IPC: G01R33/34 ,  G01R33/48

CPC classification number: G01R33/341 ,  G01R33/3415

Abstract: The transmission antenna apparatus is configured for emitting transmission magnetic fields in magnetic resonance imaging devices and includes one or more flat antennas. A magnetic resonance imaging device includes such a transmission antenna apparatus.

Abstract translation: 发送天线装置被配置为在磁共振成像装置中发射发射磁场，并且包括一个或多个平坦天线。 磁共振成像装置包括这样的发送天线装置。

公开(公告)号：US08487619B2

公开(公告)日：2013-07-16

申请号：US12759883

申请日：2010-04-14

Applicant: Stephan Biber ,  Yvonne Candidus ,  Daniel Driemel ,  Helmut Greim ,  Thomas Kundner

Inventor： Stephan Biber ,  Yvonne Candidus ,  Daniel Driemel ,  Helmut Greim ,  Thomas Kundner

IPC: G01R33/20 ,  G01R33/02

CPC classification number: G01R33/36 ,  G01R33/34007 ,  Y10T29/4902

Abstract: A simple connection of a coil with a magnetic resonance tomography (MRT) is facilitated by a method and an adapter wherein a coil-connection element of at least one local coil is connected with an MRT-connection element of an MRT system. The adapter has a coil-connection element adapter designed to form a connection with at least one coil-connection element of at least one local coil. The adapter also has at least one MRT-connection element adapter designed to form a connection with an MRT-connection element of an MRT system. The adapter can be fixed mechanically to a fixing element of the MRT system.

Abstract translation: 线圈与磁共振断层摄影（MRT）的简单连接通过方法和适配器来促进，其中至少一个局部线圈的线圈连接元件与MRT系统的MRT连接元件连接。 适配器具有设计成与至少一个局部线圈的至少一个线圈连接元件形成连接的线圈连接元件适配器。 适配器还具有至少一个MRT连接元件适配器，用于与MRT系统的MRT连接元件形成连接。 适配器可以机械地固定到MRT系统的固定元件。

公开(公告)号：US07498815B2

公开(公告)日：2009-03-03

申请号：US11950655

申请日：2007-12-05

Applicant: Helmut Greim ,  Martin Hemmerlein

Inventor： Helmut Greim ,  Martin Hemmerlein

IPC: G01V3/00

CPC classification number: G01R33/3415 ,  G01R33/34007 ,  G01R33/365 ,  G01R33/481

Abstract: An array antenna for magnetic resonance applications has at least one first and one second conductor loop in which radio-frequency currents oscillate in respective current flow directions in the operation of the array antenna. The respective conductor loops are divided into first or second loop segments in their respective current flow directions. The first loop segments are capacitively coupled with one another by first capacitors, the second loop segments are capacitively coupled with one another of second capacitors. The loop segments are fashioned as conductor traces of a circuit board that has at least one first and one second electrically insulating support layer. The support layers abut one another with the exception of conductor traces arranged between the first support layer and the second support layer. The capacitors are respectively formed by end regions of the first or second loop segments abutting one another as viewed in the respective current flow direction. The end regions overlap as viewed in the respective current flow direction. Exactly one of the support layers is between the overlapping end regions of the loop segments. The first and the second conductor loops intersect in intersection regions. Neither the a loop segments of the first conductor loop nor a loop segments of the second conductor loop are arranged between the first support layer and the second support layer in the intersection regions.

Abstract translation: 用于磁共振应用的阵列天线具有至少一个第一和第二导体回路，其中射频电流在阵列天线的操作中在各自的电流流动方向上振荡。 相应的导体环在它们各自的电流流动方向上分成第一或第二环段。 第一环路段通过第一电容器彼此电容耦合，第二环路段与另一个第二电容器电容耦合。 环路段被形成为具有至少一个第一和一个第二电绝缘支撑层的电路板的导体迹线。 除了布置在第一支撑层和第二支撑层之间的导体迹线之外，支撑层彼此邻接。 电容器分别由在相应的电流流动方向观察的第一或第二环路段彼此邻接的端部区域形成。 端部区域在相应的电流流动方向上看重叠。 其中一个支撑层位于环段的重叠端部区域之间。 第一和第二导体环在相交区域相交。 第一导体环路的环路段和第二导体环路的环路段都不布置在交叉区域中的第一支撑层和第二支撑层之间。