公开(公告)号：US08085048B2

公开(公告)日：2011-12-27

申请号：US12404793

申请日：2009-03-16

申请人： Stephan Biber ,  Helmut Greim ,  Joerg Christopher Stapf

发明人： Stephan Biber ,  Helmut Greim ,  Joerg Christopher Stapf

IPC分类号： G01V3/00

CPC分类号： G01R33/3628 ,  G01R33/341 ,  G01R33/3692

摘要： 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.

摘要翻译： 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：US07834628B2

公开(公告)日：2010-11-16

申请号：US12243038

申请日：2008-10-01

申请人： Stephan Biber ,  Jan Bollenbeck ,  Ralph Oppelt ,  Markus Vester

发明人： Stephan Biber ,  Jan Bollenbeck ,  Ralph Oppelt ,  Markus Vester

IPC分类号： G01V3/00

CPC分类号： G01R33/3415 ,  G01R33/3621 ,  G01R33/3664 ,  G01R33/3692

摘要： An arrangement to transmit magnetic resonance signals has at least two reception branches. Each reception branch contains a single antenna of a local coil as well as an amplifier connected with the single antenna, such that an amplified magnetic resonance signal is formed from a magnetic resonance signal that is acquired via the single antenna. In a multiplexer, each input is connected with a respective reception branch, such that the amplified magnetic resonance signals of the reception branch are combined by the multiplexer into a resulting signal using a time multiplexing method. A transmission path is connected on one side with an output of the multiplexer and on the other side with a receiver, such that the resulting signal is transmitted from the multiplexer to the receiver via the transmission path.

摘要翻译： 传输磁共振信号的装置具有至少两个接收分支。 每个接收分支包含本地线圈的单个天线以及与单个天线连接的放大器，使得经由单个天线获取的磁共振信号形成放大的磁共振信号。 在多路复用器中，每个输入与相应的接收分支相连，使得接收分支的放大的磁共振信号由多路复用器使用时间复用方法组合成结果信号。 传输路径在一侧与多路复用器的输出端连接，另一侧与接收器连接，使得所得到的信号经由传输路径从多路复用器传输到接收器。

公开(公告)号：US20100271027A1

公开(公告)日：2010-10-28

申请号：US12759883

申请日：2010-04-14

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

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

IPC分类号： G01R33/44 ,  H01F7/06

CPC分类号： G01R33/36 ,  G01R33/34007 ,  Y10T29/4902

摘要： 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.

摘要翻译： 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：US20100225317A1

公开(公告)日：2010-09-09

申请号：US12718254

申请日：2010-03-05

申请人： Stephan Biber

发明人： Stephan Biber

IPC分类号： G01R33/48

CPC分类号： G01R33/3415 ,  G01R33/543 ,  G01R33/56 ,  G01R33/5608

摘要： An optimized processing of data of multiple local coils is enabled by a device and a method to evaluate signals received with coils of a magnetic resonance tomography apparatus, wherein first signals are generated by means of coils via magnetic fields coming from a body, wherein a region in the body is defined, wherein weighting factors are calculated with the use of the first signals, wherein second signals are generated with the coils from magnetic fields coming from a body, wherein signals weighted with the use of the weighting factors are calculated from the second signals, wherein the weighted signals are processed further.

摘要翻译： 通过用于评估由磁共振断层摄影装置的线圈接收的信号的装置和方法来实现多个本地线圈的数据的优化处理，其中通过来自身体的磁场的线圈通过线圈产生第一信号，其中区域 在体内被定义，其中通过使用第一信号来计算加权系数，其中利用来自身体的磁场的线圈产生第二信号，其中使用加权因子加权的信号从第二信号 信号，其中进一步处理加权信号。

公开(公告)号：US20100182005A1

公开(公告)日：2010-07-22

申请号：US12690422

申请日：2010-01-20

申请人： Stephan Biber

发明人： Stephan Biber

IPC分类号： G01R33/44

CPC分类号： G01R33/341 ,  A61B5/064

摘要： A magnetic resonance tomography device has a local coil that is fashioned to receive a magnetic resonance signal. This device has a detector system that is fashioned to detect a position of the local coil on the basis of electromagnetic waves that are affected by the position of the local coil and can be differentiated from the magnetic resonance signal. A method to detect a position of a local coil in a magnetic resonance tomography device Is implemented in this manner as well.

摘要翻译： 磁共振断层摄影装置具有被形成为接收磁共振信号的局部线圈。 该装置具有检测器系统，该检测器系统根据受局部线圈的位置影响的电磁波来检测局部线圈的位置，并可与磁共振信号区分开。 以这种方式实现了在磁共振断层摄影装置中检测局部线圈的位置的方法。

公开(公告)号：US20100176800A1

公开(公告)日：2010-07-15

申请号：US12684158

申请日：2010-01-08

申请人： Stephan Biber ,  Thorsten Feiweier ,  Wolfgang Renz

发明人： Stephan Biber ,  Thorsten Feiweier ,  Wolfgang Renz

IPC分类号： G01B7/14 ,  G01R33/44

CPC分类号： G01R33/3642 ,  G01R33/341

摘要： A simple position determination is enabled by a device and a method to determine the position of a local coil in a magnetic resonance apparatus, wherein at least one signal emitted by at least one transmission coil is received by the local coil and is evaluated with a position determination device in order to determine the position of the local coil.

摘要翻译： 一种简单的位置确定是通过一种装置和方法来实现的，该装置和方法用于确定磁共振装置中局部线圈的位置，其中由至少一个传输线圈发射的至少一个信号由局部线圈接收并且用位置 确定装置，以确定局部线圈的位置。

公开(公告)号：US20100121180A1

公开(公告)日：2010-05-13

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： A61B5/055 ,  H01Q1/12

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：US20090237081A1

公开(公告)日：2009-09-24

申请号：US12404793

申请日：2009-03-16

申请人： Stephan Biber ,  Helmut Greim ,  Joerg Christopher Stapf

发明人： Stephan Biber ,  Helmut Greim ,  Joerg Christopher Stapf

IPC分类号： G01R33/36

CPC分类号： G01R33/3628 ,  G01R33/341 ,  G01R33/3692

摘要： 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.

摘要翻译： 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：US07583083B2

公开(公告)日：2009-09-01

申请号：US12179109

申请日：2008-07-24

申请人： Stephan Biber ,  Klaus Huber

发明人： Stephan Biber ,  Klaus Huber

IPC分类号： G01V3/00

CPC分类号： G01R33/3621

摘要： A radio-frequency acquisition device for a magnetic resonance tomography apparatus has at least one reception antenna for acquisition of magnetic resonance signals and with an amplifier device to amplify acquired magnetic resonance signals. The amplifier device has an input transistor and a transformation device to transform the source impedance of the acquisition antenna into a source impedance adapted to the input transistor, and wherein the transformation device can be switched between at least two transformation ratios.

摘要翻译： 用于磁共振断层摄影装置的射频获取装置具有至少一个用于获取磁共振信号的接收天线和放大器装置以放大获取的磁共振信号。 放大器装置具有输入晶体管和变换装置，用于将采集天线的源阻抗变换成适于输入晶体管的源阻抗，并且其中转换装置可以在至少两个变换比之间切换。

公开(公告)号：US20090096456A1

公开(公告)日：2009-04-16

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： G01R33/36

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。