公开(公告)号：US20130241557A1

公开(公告)日：2013-09-19

申请号：US13618635

申请日：2012-09-14

申请人： Stephan Biber ,  Daniel Driemel ,  Helmut Greim ,  Steffen Wolf

发明人： Stephan Biber ,  Daniel Driemel ,  Helmut Greim ,  Steffen Wolf

IPC分类号： G01R33/36

CPC分类号： G01R33/3642 ,  G01R33/34007 ,  G01R33/3415

摘要： A magnetic resonance coil for transmitting and/or receiving magnetic resonance signals is provided. The magnetic resonance coil includes at least two overlapping coil elements. Coil conductors of the at least two overlapping coil elements intersect in intersection regions and are arranged on a support. Mutually overlapping coil elements of the at least two overlapping coil elements are arranged on different sides of the support. The support is formed from at least three layers of a support material. A cavity that is filled with air or a filler material, the dielectric constant of the filler material being lower than the dielectric constant of the support material, is provided in the intersection regions in a middle layer of the at least three layers.

摘要翻译： 提供用于发送和/或接收磁共振信号的磁共振线圈。 磁共振线圈包括至少两个重叠的线圈元件。 所述至少两个重叠的线圈元件的线圈导体在交叉区域相交并且布置在支撑件上。 所述至少两个重叠的线圈元件的相互重叠的线圈元件布置在所述支撑件的不同侧上。 支撑体由至少三层的支撑材料形成。 在至少三层的中间层的交叉区域中设置填充有空气或填充材料的空腔，填充材料的介电常数低于载体材料的介电常数。

公开(公告)号：US08244328B2

公开(公告)日：2012-08-14

申请号：US12597947

申请日：2008-10-31

申请人： Stephan Biber ,  Daniel Driemel ,  Helmut Greim ,  Karsten Jahns

发明人： Stephan Biber ,  Daniel Driemel ,  Helmut Greim ,  Karsten Jahns

IPC分类号： A61B5/00

CPC分类号： H01Q1/276 ,  G01R33/34084 ,  G01R33/3415 ,  H01Q7/00 ,  H01Q9/28

摘要： 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.

摘要翻译： 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：US09547064B2

公开(公告)日：2017-01-17

申请号：US13645093

申请日：2012-10-04

申请人： Stephan Biber ,  Helmut Greim ,  Juergen Nistler ,  Thorsten Speckner

发明人： Stephan Biber ,  Helmut Greim ,  Juergen Nistler ,  Thorsten Speckner

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

CPC分类号： G01R33/583 ,  G01R33/341

摘要： 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.

摘要翻译： 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：US20130082707A1

公开(公告)日：2013-04-04

申请号：US13645093

申请日：2012-10-04

申请人： Stephan Biber ,  Helmut Greim ,  Juergen Nistler ,  Thorsten Speckner

发明人： Stephan Biber ,  Helmut Greim ,  Juergen Nistler ,  Thorsten Speckner

IPC分类号： G01R33/54 ,  G01R33/341

CPC分类号： G01R33/583 ,  G01R33/341

摘要： 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.

摘要翻译： 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：US07764065B2

公开(公告)日：2010-07-27

申请号：US12243056

申请日：2008-10-01

申请人： Stephan Biber ,  Helmut Greim ,  Joerg Rothard ,  Markus Vester

发明人： Stephan Biber ,  Helmut Greim ,  Joerg Rothard ,  Markus Vester

IPC分类号： G01V3/00

CPC分类号： G01R33/3415 ,  A61B5/055 ,  G01R33/34046 ,  G01R33/3642 ,  G01R33/3692

摘要： 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.

摘要翻译： 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：US09513351B2

公开(公告)日：2016-12-06

申请号：US13618635

申请日：2012-09-14

申请人： Stephan Biber ,  Daniel Driemel ,  Helmut Greim ,  Steffen Wolf

发明人： Stephan Biber ,  Daniel Driemel ,  Helmut Greim ,  Steffen Wolf

IPC分类号： G01R33/36 ,  G01R33/3415 ,  G01R33/34

CPC分类号： G01R33/3642 ,  G01R33/34007 ,  G01R33/3415

摘要： A magnetic resonance coil for transmitting and/or receiving magnetic resonance signals is provided. The magnetic resonance coil includes at least two overlapping coil elements. Coil conductors of the at least two overlapping coil elements intersect in intersection regions and are arranged on a support. Mutually overlapping coil elements of the at least two overlapping coil elements are arranged on different sides of the support. The support is formed from at least three layers of a support material. A cavity that is filled with air or a filler material, the dielectric constant of the filler material being lower than the dielectric constant of the support material, is provided in the intersection regions in a middle layer of the at least three layers.

摘要翻译： 提供用于发送和/或接收磁共振信号的磁共振线圈。 磁共振线圈包括至少两个重叠的线圈元件。 所述至少两个重叠的线圈元件的线圈导体在交叉区域相交并且布置在支撑件上。 所述至少两个重叠的线圈元件的相互重叠的线圈元件布置在所述支撑件的不同侧上。 支撑体由至少三层的支撑材料形成。 在至少三层的中间层的交叉区域中设置填充有空气或填充材料的空腔，填充材料的介电常数低于载体材料的介电常数。

公开(公告)号：US20150025362A1

公开(公告)日：2015-01-22

申请号：US14337728

申请日：2014-07-22

申请人： Stephan Biber ,  Hubertus Fischer ,  Helmut Greim

发明人： Stephan Biber ,  Hubertus Fischer ,  Helmut Greim

IPC分类号： G01R33/34

CPC分类号： G01R33/34 ,  G01R33/3415

摘要： A spine coil for a magnetic resonance imaging device includes at least one transmission coil element configured for transmission.

摘要翻译： 用于磁共振成像装置的脊线圈包括配置成用于传输的至少一个传输线圈元件。

公开(公告)号：US10114091B2

公开(公告)日：2018-10-30

申请号：US13929746

申请日：2013-06-27

申请人： Stephan Biber ,  Klaus Huber

发明人： Stephan Biber ,  Klaus Huber

IPC分类号： G01R33/36 ,  G01R33/28 ,  G01R33/341

摘要： Methods and a device for automatic detuning of a magnetic resonance tomography (MRT) local coil not connected to an MRT system are provided. The device has self-closing switches that are closed or open, depending on the presence of an MRT high-frequency field.

公开(公告)号：US20130241547A1

公开(公告)日：2013-09-19

申请号：US13604550

申请日：2012-09-05

申请人： Stephan Biber ,  Klaus Huber

发明人： Stephan Biber ,  Klaus Huber

IPC分类号： G01R33/36

CPC分类号： G01R33/3692 ,  G01R33/3415 ,  G01R33/3664

摘要： A magnetic resonance apparatus includes receive coils and a receiver device for processing magnetic resonance signals received by coil elements of the receive coils. The receive coils are subdivided into at least a first group having at least one receive coil and a second group having at least one receive coil. The receive coils of the first group are connected to the receiver device via a hardwired communications link, and the receive coils of the second group are each connectable or connected to the receiver device via a wireless communications link.

摘要翻译： 磁共振装置包括接收线圈和用于处理由接收线圈的线圈元件接收的磁共振信号的接收器装置。 接收线圈被细分成至少一个具有至少一个接收线圈的第一组和具有至少一个接收线圈的第二组。 第一组的接收线圈经由硬连线通信链路连接到接收机设备，并且第二组的接收线圈各自可经由无线通信链路连接或接收到接收机设备。

公开(公告)号：US20140043029A1

公开(公告)日：2014-02-13

申请号：US13960791

申请日：2013-08-06

申请人： Stephan Biber ,  Klaus Huber

发明人： Stephan Biber ,  Klaus Huber

IPC分类号： G01R33/36

CPC分类号： G01R33/36 ,  A61B5/055 ,  G01R33/365

摘要： A system for electromagnetic excitation of an object under examination during magnetic resonance tomography includes a radio frequency (RF) device for generating a radio-frequency signal and a plurality of antennas for emitting the radio-frequency signal. A signal connection exists between the output of the RF device and the plurality of antennas. A source impedance of the signal connection to the output of the RF device at a connection point of the plurality of antennas is significantly higher than the impedance of the plurality of antennas at the connection points, so that the plurality of antennas are fed in a current source feed mode if a radio-frequency signal is present.

摘要翻译： 在磁共振断层摄影中，检查对象的电磁激励系统包括用于产生射频信号的射频（RF）装置和用于发射射频信号的多个天线。 在RF设备的输出和多个天线之间存在信号连接。 在多个天线的连接点处的到RF设备的输出的信号连接的源阻抗显着高于连接点处的多个天线的阻抗，使得多个天线以当前的电流 如果存在射频信号，则源馈送模式。