公开(公告)号：US10209326B2

公开(公告)日：2019-02-19

申请号：US15046840

申请日：2016-02-18

Applicant: Helmut Greim

Inventor： Helmut Greim

IPC: G01R33/34 ,  G01R33/36 ,  G01R33/341

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.

公开(公告)号：US09547064B2

公开(公告)日：2017-01-17

申请号：US13645093

申请日：2012-10-04

Applicant: Stephan Biber ,  Helmut Greim ,  Juergen Nistler ,  Thorsten Speckner

Inventor： Stephan Biber ,  Helmut Greim ,  Juergen Nistler ,  Thorsten Speckner

IPC: G01R33/54 ,  G01R33/341 ,  G01R33/58

CPC classification number: G01R33/583 ,  G01R33/341

Abstract: A method for the control of a magnetic resonance system is provided. In a test phase before a magnetic resonance measurement, a test high-frequency pulse with several parallel individual high-frequency pulses is transmitted with a transmitter antenna arrangement over various different high-frequency transmitter channels. At lower transmitter power, the test high-frequency pulse generates essentially the same field distribution as an excitation high-frequency pulse to be transmitted during a subsequent magnetic resonance measurement. A high-frequency field generated by this test high-frequency pulse is measured in at least one area of a local pulse arrangement, and on the basis of the high-frequency field measured, a high-frequency field value that is to be anticipated at the local coil arrangement during the subsequent magnetic resonance measurement is determined. The control of the magnetic resonance system during a later magnetic resonance measurement includes taking the high-frequency field value into account.

Abstract translation: 提供了一种用于控制磁共振系统的方法。 在磁共振测量之前的测试阶段，具有几个并联的单个高频脉冲的测试高频脉冲通过各种不同的高频发射机通道上的发射机天线布置发射。 在较低的发射机功率下，测试高频脉冲产生与随后的磁共振测量期间传输的激发高频脉冲基本相同的场分布。 由本测试高频脉冲产生的高频场是在局部脉冲布置的至少一个区域中测量的，并且基于所测量的高频场，测量在高频场中预期的高频场值 在随后的磁共振测量期间确定局部线圈布置。 在后来的磁共振测量中，磁共振系统的控制包括考虑高频场值。

公开(公告)号：US20130181716A1

公开(公告)日：2013-07-18

申请号：US13553623

申请日：2012-07-19

Applicant: Helmut Greim

Inventor： Helmut Greim

IPC: G01R33/422

CPC classification number: G01R33/422 ,  G01R33/283 ,  G01R33/34046 ,  G01R33/3415 ,  G01R33/3685

Abstract: A local coil for an imaging system includes a sheath current filter and one or more lines run through the sheath current filter.

Abstract translation: 用于成像系统的局部线圈包括护套电流滤波器和穿过鞘电流滤波器的一条或多条线。

公开(公告)号：US20130082707A1

公开(公告)日：2013-04-04

申请号：US13645093

申请日：2012-10-04

Applicant: Stephan Biber ,  Helmut Greim ,  Juergen Nistler ,  Thorsten Speckner

Inventor： Stephan Biber ,  Helmut Greim ,  Juergen Nistler ,  Thorsten Speckner

IPC: G01R33/54 ,  G01R33/341

CPC classification number: G01R33/583 ,  G01R33/341

Abstract: A method for the control of a magnetic resonance system is provided. In a test phase before a magnetic resonance measurement, a test high-frequency pulse with several parallel individual high-frequency pulses is transmitted with a transmitter antenna arrangement over various different high-frequency transmitter channels. At lower transmitter power, the test high-frequency pulse generates essentially the same field distribution as an excitation high-frequency pulse to be transmitted during a subsequent magnetic resonance measurement. A high-frequency field generated by this test high-frequency pulse is measured in at least one area of a local pulse arrangement, and on the basis of the high-frequency field measured, a high-frequency field value that is to be anticipated at the local coil arrangement during the subsequent magnetic resonance measurement is determined. The control of the magnetic resonance system during a later magnetic resonance measurement includes taking the high-frequency field value into account.

Abstract translation: 提供了一种用于控制磁共振系统的方法。 在磁共振测量之前的测试阶段，具有几个并联的单个高频脉冲的测试高频脉冲通过各种不同的高频发射机通道上的发射机天线布置发射。 在较低的发射机功率下，测试高频脉冲产生与随后的磁共振测量期间传输的激发高频脉冲基本相同的场分布。 由本测试高频脉冲产生的高频场是在局部脉冲布置的至少一个区域中测量的，并且基于所测量的高频场，测量在高频场中预期的高频场值 在随后的磁共振测量期间确定局部线圈布置。 在后来的磁共振测量中，磁共振系统的控制包括考虑高频场值。

公开(公告)号：US08207737B2

公开(公告)日：2012-06-26

申请号：US12640263

申请日：2009-12-17

Applicant: Helmut Greim

Inventor： Helmut Greim

IPC: G01V3/00 ,  H01P7/04

CPC classification number: G01R33/3685 ,  A61B5/0555

Abstract: A standing wave barrier, particularly for use in a magnetic resonance tomography device, has a body and an opening in the body that is fashioned to accommodate a cable, the opening being formed as an externally open groove along a longitudinal direction of the standing wave barrier, and is shaped so that the cable can glide in and out along the standing wave barrier through the groove.

Abstract translation: 特别是在磁共振断层摄影装置中使用的驻波屏障具有本体和开口，该主体和开口形成为容纳电缆，该开口形成为沿着驻波屏障的纵向方向的外部开放的凹槽 并且被成形为使得电缆可以沿着驻波屏障通过凹槽滑入和滑出。

公开(公告)号：US07764065B2

公开(公告)日：2010-07-27

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: G01V3/00

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：US20100148775A1

公开(公告)日：2010-06-17

申请号：US12640263

申请日：2009-12-17

Applicant: Helmut Greim

Inventor： Helmut Greim

IPC: G01R33/48

CPC classification number: G01R33/3685 ,  A61B5/0555

Abstract: A standing wave barrier, particularly for use in a magnetic resonance tomography device, has a body and an opening in the body that is fashioned to accommodate a cable, the opening being formed as an externally open groove along a longitudinal direction of the standing wave barrier, and is shaped so that the cable can glide in and out along the standing wave barrier through the groove.

Abstract translation: 特别是在磁共振断层摄影装置中使用的驻波屏障具有本体和开口，该主体和开口形成为容纳电缆，该开口形成为沿着驻波屏障的纵向方向的外部开放的凹槽 并且被成形为使得电缆可以沿着驻波屏障通过凹槽滑入和滑出。

公开(公告)号：US20080231280A1

公开(公告)日：2008-09-25

申请号：US12052835

申请日：2008-03-21

Applicant: Helmut Greim ,  Steffen Wolf

Inventor： Helmut Greim ,  Steffen Wolf

IPC: G01R33/32

CPC classification number: G01R33/583 ,  G01R33/246 ,  G01R33/341 ,  G01R33/3642 ,  G01R33/3664 ,  G01R33/422 ,  G01R33/5612 ,  G01R33/5659

Abstract: In a method and arrangement for local manipulation of a B1 field in a first region of an examination subject in an examination volume of a magnetic resonance system, a B1 measurement value that represents the B1 field in the sub-volume during an adjustment measurement is integrally determined, and in desired radio-frequency signal parameters for a subsequent magnetic resonance measurement are predetermined on the basis of the determined B1 measurement value. At least during the adjustment measurement, the B1 field is influenced within a second region counter to the manipulation intended in the first region by means of an auxiliary coil element which is arranged in or at the second region of the sub-volume remote from the first region.

Abstract translation: 在用于在磁共振系统的检查体积中的检查对象的第一区域中的B 1＆lt; 1＆gt;场的局部操纵的方法和装置中，B 1 <测量值 在调整测量期间代表子体积中的B 1 SUB字段被一体地确定，并且在所确定的用于随后的磁共振测量的所需射频信号参数中基于确定的B < SUB> 1 测量值。 至少在调整测量期间，B＆lt; 1＆gt;场在与第一区域内的操作相反的第二区域内受到辅助线圈元件的影响，该辅助线圈元件被布置在第二区域 子音量远离第一个区域。

公开(公告)号：US20050231300A1

公开(公告)日：2005-10-20

申请号：US11084422

申请日：2005-03-18

Applicant: Helmut Greim ,  Jurgen Hagen

Inventor： Helmut Greim ,  Jurgen Hagen

IPC: G01R33/36 ,  H01P1/202 ,  H01P3/06 ,  H01P5/04 ,  H01Q9/16 ,  H05K5/00

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卷筒纸端到第二卷筒纸端。 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：US06552546B2

公开(公告)日：2003-04-22

申请号：US09977766

申请日：2001-10-15

Applicant: Helmut Greim

Inventor： Helmut Greim

IPC: G01V300

CPC classification number: G01R33/3642 ,  G01R33/3621

Abstract: An inductively coupled reception coil arrangement for magnetic resonance tomography, having at least two inter-nested individual coils, the outer primary coil of which serves as output coil for the inner secondary coil. The primary coil has a pre-amplifier decoupling device which closes it with high resistance.