公开(公告)号：US20130134978A1

公开(公告)日：2013-05-30

申请号：US13689339

申请日：2012-11-29

申请人： Stephan Biber

发明人： Stephan Biber

IPC分类号： G01R33/3875

CPC分类号： G01R33/3875

摘要： In order to balance out a field inhomogeneity, a value for a coil current is determined by a controller as a function of an item of information relating to the field inhomogeneity and an item of information relating to a position of at least one balancing or shim coil arranged in the magnetic field. The value is to be supplied to the at least one shim coil in order to generate a magnetic balancing field to balance out the field inhomogeneity. A control signal for at least one shim current source and for at least one switching matrix coupling the at least one shim current source to the at least one shim coil is generated as a function of the at least one value.

摘要翻译： 为了平衡场不均匀性，线圈电流的值由控制器确定为与场不均匀性有关的信息项的函数，以及与至少一个平衡或垫片线圈的位置有关的信息项 布置在磁场中。 该值将被提供给至少一个垫片线圈，以便产生磁平衡场以平衡场不均匀性。 作为至少一个值的函数，产生用于至少一个匀场电流源和至少一个将至少一个垫片电流源耦合到至少一个垫片线圈的开关矩阵的控制信号。

公开(公告)号：US08415949B2

公开(公告)日：2013-04-09

申请号：US12777387

申请日：2010-05-11

申请人： Stephan Biber ,  Klaus Ludwig ,  Kay Uwe Seemann ,  Johann Sukkau

发明人： Stephan Biber ,  Klaus Ludwig ,  Kay Uwe Seemann ,  Johann Sukkau

IPC分类号： G01V3/00

CPC分类号： G01R33/28 ,  G01R33/341

摘要： In a device and a method to determine the position of at least one local coil for a magnetic resonance tomography apparatus, the field strength of a magnetic field is measured at multiple locations with at least one magnetic field strength sensor, and the position of the local coil (6) is determined based on the field strength measured at multiple locations.

摘要翻译： 在用于确定用于磁共振断层摄影装置的至少一个局部线圈的位置的装置和方法中，通过至少一个磁场强度传感器在多个位置处测量磁场的场强，并且本地 线圈（6）根据在多个位置测得的场强确定。

公开(公告)号：US08384388B2

公开(公告)日：2013-02-26

申请号：US12633859

申请日：2009-12-09

申请人： Stephan Biber

发明人： Stephan Biber

IPC分类号： G01V3/00

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

摘要： A magnetic resonance receiver system has an antenna arrangement with a number of receiver antenna elements to receive MR response signals. The magnetic resonance system has a combination network arrangement with a number of combination networks in order to combine the MR response signals received by various receiver antenna elements, to form modes, a frequency multiplexer arrangement downstream of the combination network that superimposes at least some of the modes in a common transmission signal, and a transmission line arrangement with a number of transmission lines in order to respectively transfer the transmission signals to an input channel of a first channel switching matrix. This input channel is associated with the transmission line. Downstream of the first channel switching matrix is a frequency demultiplexer arrangement that filters the modes superimposed in a transmission signal out of the transmission signal. Downstream of the frequency demultiplexer arrangement is a second channel switching matrix that connects the modes at specific inputs of an MR signal processing device.

摘要翻译： 磁共振接收器系统具有天线装置，其具有多个接收器天线元件以接收MR响应信号。 磁共振系统具有与多个组合网络的组合网络布置，以便组合由各种接收机天线元件接收的MR响应信号，以形成模式;组合网络下游的频率复用器装置，其叠加至少一些 公共传输信号中的模式，以及具有多条传输线的传输线配置，以便将传输信号分别传送到第一信道切换矩阵的输入信道。 该输入通道与传输线相关联。 第一通道切换矩阵的下游是频率解复用器装置，其对发送信号中的发送信号中叠加的模式进行滤波。 频率解复用器装置的下游是连接MR信号处理装置的特定输入端的模式的第二信道切换矩阵。

公开(公告)号：US08115483B2

公开(公告)日：2012-02-14

申请号：US12472538

申请日：2009-05-27

申请人： Stephan Biber

发明人： Stephan Biber

IPC分类号： G01V3/00

CPC分类号： G01R33/3415 ,  G01R33/288 ,  G01R33/36 ,  G01R33/3642 ,  G01R33/543

摘要： In a method and device for field quality testing of a magnetic resonance antenna arrangement of a magnetic resonance system composed of multiple antenna elements, a test signal is fed into the respective antenna elements by a transmission antenna and the test signal, or a noise signal that occurs with no signal fed to the respective antenna elements, is determined at a receiver unit for each of at least some of the individual antenna elements. The noise received noise signals and/or test signals are analyzed with regard to specific characteristic data and a quality state of the magnetic resonance antenna arrangement is determined based thereon.

摘要翻译： 在用于由多个天线元件组成的磁共振系统的磁共振天线装置的现场质量测试的方法和装置中，通过发射天线和测试信号或测试信号将测试信号馈送到相应的天线元件，或者噪声信号 发生在没有馈送到相应天线元件的信号的情况下，在接收机单元处针对至少一些各个天线元件中的每一个确定。 基于特定特性数据分析接收到的噪声信号和/或测试信号，并且基于此确定磁共振天线布置的质量状态。

公开(公告)号：US20120025830A1

公开(公告)日：2012-02-02

申请号：US13171420

申请日：2011-06-28

申请人： Stephan Biber ,  Karsten Jahns ,  Jörg Rothard

发明人： Stephan Biber ,  Karsten Jahns ,  Jörg Rothard

IPC分类号： G01R33/28

CPC分类号： G01R33/3415 ,  G01R33/365

摘要： The present embodiments relate to a local coil for a magnetic resonance tomography system. The local coil extends in a first direction and in a second direction orthogonal to the first direction. The local coil has a plurality of coil elements. At least some coil elements of the plurality overlap at least partly in a third direction running between the first direction and the second direction.

摘要翻译： 本实施例涉及用于磁共振断层摄影系统的局部线圈。 局部线圈沿与第一方向正交的第一方向和第二方向延伸。 局部线圈具有多个线圈元件。 至少一些线圈元件至少部分地在第一方向和第二方向之间的第三方向上重叠。

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：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：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。