公开(公告)号：US20080143333A1

公开(公告)日：2008-06-19

申请号：US11950655

申请日：2007-12-05

Applicant: Helmut Greim ,  Martin Hemmerlein

Inventor： Helmut Greim ,  Martin Hemmerlein

IPC: G01R33/36

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。

公开(公告)号：US07164333B2

公开(公告)日：2007-01-16

申请号：US11084422

申请日：2005-03-18

Applicant: Helmut Greim ,  Jürgen Hagen

Inventor： Helmut Greim ,  Jürgen Hagen

IPC: H01P3/02 ,  H01P5/04 ,  H01P1/04

CPC classification number: H01P1/202 ,  G01R33/3685

Abstract: A standing wave barrier for at least one radio frequency cable having a cable axis has at least one metallic base web that proceeds parallel to the cable axis from a first web end to a second web end. The web ends are coupled to one another in terms of radio frequency terms via a capacitance, so that the base web and the capacitance together form a radio frequency resonant oscillator circuit. The base web and the capacitance are situated in one of two half-shells that can be connected to one another such that the radio frequency cable is clamped between them. The capacitance has an adjustable capacitor element that has a first capacitor surface and a second capacitor surface. The first capacitor surface is connected in electrically conductive fashion to the first web end, and the second capacitor surface is connected in electrically conductive fashion to the second web end. The first and the second capacitor surfaces are respectively capacitively coupled to a number of first counter-surfaces and second counter-surfaces. Adjustment of the adjustable capacitor element can be accomplished by making an electrically conductive connection between the first counter-surfaces and the second counter-surfaces.

Abstract translation: 用于具有电缆轴线的至少一个射频电缆的驻波屏障具有至少一个金属底座，其平行于电缆轴线从第一腹板端到第二腹板端。 网端通过电容在射频方面彼此耦合，使得基底网和电容一起形成射频谐振振荡器电路。 底座腹板和电容位于可以彼此连接的两个半壳之一，使得射频电缆夹在它们之间。 电容具有可调电容器元件，其具有第一电容器表面和第二电容器表面。 第一电容器表面以导电方式连接到第一幅材端，并且第二电容器表面以导电方式连接到第二幅材端。 第一和第二电容器表面分别电容耦合到多个第一相对表面和第二相对表面。 可调节电容器元件的调整可以通过在第一相对表面和第二对置表面之间形成导电连接来实现。

公开(公告)号：US06795037B2

公开(公告)日：2004-09-21

申请号：US10388818

申请日：2003-03-14

Applicant: Helmut Greim

Inventor： Helmut Greim

IPC: H01Q930

CPC classification number: G01R33/34046

Abstract: A radio-frequency antenna for a magnetic resonance system has a basic element with two end rings and a number of antenna rods, and a radio-frequency mirror. The end rings are arranged concentrically relative to an antenna axis can and are axially offset from one another. The antenna rods are arranged around the antenna axis and connect the end rings. The radio-frequency mirror is inductively coupled to the end rings and the antenna rods. It limits a magnetic resonance excitation signal emitted by the antenna and/or a magnetic resonance signal received by the antenna axially at one side.

Abstract translation: 用于磁共振系统的射频天线具有带有两个端环和多个天线杆的基本元件和射频镜。 端环相对于天线轴线心轴布置并且彼此轴向偏移。 天线杆围绕天线轴线布置并连接端环。 射频反射镜电感耦合到端环和天线杆。 它限制由天线发射的磁共振激励信号和/或天线在一侧轴向接收的磁共振信号。

公开(公告)号：US20130119988A1

公开(公告)日：2013-05-16

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: G01R33/34

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：US20120223714A1

公开(公告)日：2012-09-06

申请号：US13224824

申请日：2011-09-02

Applicant: Helmut Greim

Inventor： Helmut Greim

IPC: G01R33/44

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：US08085048B2

公开(公告)日：2011-12-27

申请号：US12404793

申请日：2009-03-16

Applicant: Stephan Biber ,  Helmut Greim ,  Joerg Christopher Stapf

Inventor： Stephan Biber ,  Helmut Greim ,  Joerg Christopher Stapf

IPC: G01V3/00

CPC classification number: G01R33/3628 ,  G01R33/341 ,  G01R33/3692

Abstract: An arrangement to detune a reception antenna in a local coil of a magnetic resonance system, with at least one reception antenna that is fashioned as a loop antenna and that has at least one first capacitance. Radio-frequency signals of a magnetic resonance examination are received via the reception antenna. A switchable detuning circuit contains the first capacitance connected to an oscillating circuit and a first inductance. A reception device to receive a control signal is coupled with the oscillating circuit. The reception device switches the oscillating circuit into a high-resistance state given a received control signal so that a receipt of a radio-frequency signal via the reception antenna is prevented. The reception device is fashioned to receive a wirelessly transmitted radio-frequency control signal. The radio-frequency control signal has a frequency that lies outside of the bandwidth of the radio-frequency signal used for magnetic resonance examination.

Abstract translation: 一种使磁共振系统的本地线圈中的接收天线失谐的装置，其中至少一个接收天线被形成为环形天线并且具有至少一个第一电容。 通过接收天线接收磁共振检查的射频信号。 可切换失谐电路包含连接到振荡电路和第一电感的第一电容。 接收控制信号的接收装置与振荡电路耦合。 接收装置在给出接收到的控制信号的情况下将振荡电路切换为高电阻状态，从而防止经由接收天线的射频信号的接收。 接收装置被设计成接收无线发送的射频控制信号。 射频控制信号具有位于用于磁共振检查的射频信号的带宽之外的频率。

公开(公告)号：US07965082B2

公开(公告)日：2011-06-21

申请号：US12420140

申请日：2009-04-08

Applicant: Helmut Greim ,  Markus Vester ,  Jian Min Wang ,  Wei Dong Wang ,  Yao Xing

Inventor： Helmut Greim ,  Markus Vester ,  Jian Min Wang ,  Wei Dong Wang ,  Yao Xing

IPC: G01V3/00

CPC classification number: G01R33/34076 ,  G01R33/3642 ,  G01R33/3657

Abstract: In a method for processing radio frequency signals of a magnetic resonance imaging system in which the coil portion of the magnetic resonance imaging system includes a body coil and a local coil, radio frequency signals are supplied to the body coil, and these radio frequency signals are coupled to said local coil, and transmitted by said local coil into a region to be examined. A corresponding radio frequency system has a local coil and a body coil, with power coupling between the local coil and the body coil; during the phase for transmitting the radio frequency signals. The body coil serves to couple the radio frequency signals to be transmitted to the local coil, and the local coil serves to transmit the coupled radio frequency signals to a region to be examined. This method and system allow the transmitting function of the local coil to be achieved without having a coil plug on a patient bed to provide a radio frequency signal transmitting channel.

Abstract translation: 在用于处理磁共振成像系统的线圈部分包括体线圈和局部线圈的磁共振成像系统的射频信号的方法中，射频信号被提供给体线圈，并且这些射频信号是 耦合到所述局部线圈，并由所述局部线圈传输到待检查的区域中。 对应的射频系统具有局部线圈和体线圈，其在局部线圈和体线圈之间具有功率耦合; 在发射射频信号的阶段。 体线圈用于将待传输的射频信号耦合到本地线圈，并且本地线圈用于将耦合的射频信号传输到待检查的区域。 该方法和系统允许实现本地线圈的传输功能，而不需要在病床上设置线圈插头来提供射频信号传输通道。

公开(公告)号：US20100271027A1

公开(公告)日：2010-10-28

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: G01R33/44 ,  H01F7/06

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：US20100121180A1

公开(公告)日：2010-05-13

申请号：US12597947

申请日：2008-10-31

Applicant: Stephan Biber ,  Daniel Driemel ,  Helmut Greim ,  Karsten Jahns

Inventor： Stephan Biber ,  Daniel Driemel ,  Helmut Greim ,  Karsten Jahns

IPC: A61B5/055 ,  H01Q1/12

CPC classification number: H01Q1/276 ,  G01R33/34084 ,  G01R33/3415 ,  H01Q7/00 ,  H01Q9/28

Abstract: A head coil for a magnetic resonance apparatus has a supporting body that carries a number of antenna elements. The supporting body has an end section that is shaped as a spherical cap. A butterfly antenna is mounted at the end section, and is annularly surrounded by at least one group antenna that overlaps the butterfly antenna.

Abstract translation: 用于磁共振装置的磁头线圈具有承载多个天线元件的支撑体。 支撑体具有成形为球形帽的端部。 蝶形天线安装在端部，并且被至少一个与蝴蝶天线重叠的组天线环形围绕。

公开(公告)号：US20090237081A1

公开(公告)日：2009-09-24

申请号：US12404793

申请日：2009-03-16

Applicant: Stephan Biber ,  Helmut Greim ,  Joerg Christopher Stapf

Inventor： Stephan Biber ,  Helmut Greim ,  Joerg Christopher Stapf

IPC: G01R33/36

CPC classification number: G01R33/3628 ,  G01R33/341 ,  G01R33/3692

Abstract: An arrangement to detune a reception antenna in a local coil of a magnetic resonance system, with at least one reception antenna that is fashioned as a loop antenna and that has at least one first capacitance. Radio-frequency signals of a magnetic resonance examination are received via the reception antenna. A switchable detuning circuit contains the first capacitance connected to an oscillating circuit and a first inductance. A reception device to receive a control signal is coupled with the oscillating circuit. The reception device switches the oscillating circuit into a high-resistance state given a received control signal so that a receipt of a radio-frequency signal via the reception antenna is prevented. The reception device is fashioned to receive a wirelessly transmitted radio-frequency control signal. The radio-frequency control signal has a frequency that lies outside of the bandwidth of the radio-frequency signal used for magnetic resonance examination.

Abstract translation: 一种使磁共振系统的本地线圈中的接收天线失谐的装置，其中至少一个接收天线被形成为环形天线并且具有至少一个第一电容。 通过接收天线接收磁共振检查的射频信号。 可切换失谐电路包含连接到振荡电路和第一电感的第一电容。 接收控制信号的接收装置与振荡电路耦合。 接收装置在给出接收到的控制信号的情况下将振荡电路切换为高电阻状态，从而防止经由接收天线的射频信号的接收。 接收装置被设计成接收无线发送的射频控制信号。 射频控制信号具有位于用于磁共振检查的射频信号的带宽之外的频率。