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。

公开(公告)号：US20130225980A1

公开(公告)日：2013-08-29

申请号：US13781214

申请日：2013-02-28

申请人： Stephan Biber ,  Rainer Kurth ,  Stephan Zink

发明人： Stephan Biber ,  Rainer Kurth ,  Stephan Zink

IPC分类号： A61B5/055

CPC分类号： A61B5/055 ,  A61B5/0555 ,  A61B5/4576 ,  A61B5/6823 ,  G01R33/34007 ,  G01R33/34084 ,  G01R33/3415

摘要： A shoulder local coil system for a magnetic resonance tomography system for generating magnetic resonance images of a shoulder region of a person to be examined is provided. The shoulder local coil system includes a base plate, a fixed or removable cover plate over the base plate, and a flexible local coil arranged wholly or partially movably between the base plate and the cover plate.

摘要翻译： 提供了一种用于产生待检查者的肩部区域的磁共振图像的磁共振断层摄影系统的肩部局部线圈系统。 肩部本地线圈系统包括基板，位于基板上方的固定或可移除的盖板以及在基板和盖板之间全部或部分可移动地布置的柔性局部线圈。

公开(公告)号：US20130181715A1

公开(公告)日：2013-07-18

申请号：US13743226

申请日：2013-01-16

申请人： Stephan Biber

发明人： Stephan Biber

IPC分类号： G01R33/28

CPC分类号： G01R33/28 ,  G01R33/341 ,  G01R33/3415 ,  G01R33/36

摘要： Magnetic resonance tomography (MRT) local coil positioning by RFID is enabled with a positioning device to detect a position of a first object relative to a position of an additional object that includes at least one RFID tag arranged on the first object and/or at least one RFID reader arranged on the additional object.

摘要翻译： 通过RFID的磁共振断层摄影（MRT）局部线圈定位能够进行定位装置，以检测第一物体相对于附加物体的位置的位置，该附加物体的位置包括布置在第一物体上的至少一个RFID标签和/或至少 一个RFID读取器布置在附加对象上。

公开(公告)号：US08487622B2

公开(公告)日：2013-07-16

申请号：US12893286

申请日：2010-09-29

申请人： Stephan Biber ,  Jan Bollenbeck ,  Markus Vester

发明人： Stephan Biber ,  Jan Bollenbeck ,  Markus Vester

IPC分类号： G01V3/00

CPC分类号： G01R33/3692 ,  G01R33/341 ,  G01R33/3415 ,  G01R33/3621 ,  G01R33/422

摘要： In a magnetic resonance tomography local coil arrangement and a method for processing signals received thereby, at least one local coil is fashioned to receive at least one reception signal and at least one amplifier is provided that amplifies the at least one reception signal. A frequency converter generates at least one intermediate frequency signal from the at least one reception signal the intermediate frequency of the intermediate frequency signal differing from the reception signal frequency of each reception signal. An analog-digital converter converts the analog intermediate frequency signal into a digitized signal. A shielding device shields against at least radio-frequency signals, the shielding device surrounding at least the analog-digital converter. At least one frequency filter is arranged between the at least one local coil and the analog-digital converter, the frequency filter exhibiting a transmission range for signals with the intermediate frequency of an intermediate frequency signal. The digitized signal is transmitted from the local coil arrangement.

摘要翻译： 在磁共振断层摄影局部线圈装置和用于处理由此接收的信号的方法中，形成至少一个局部线圈以接收至少一个接收信号，并且提供放大至少一个接收信号的至少一个放大器。 变频器从至少一个接收信号产生至少一个中频信号，该中频信号与每个接收信号的接收信号频率不同。 模拟数字转换器将模拟中频信号转换为数字化信号。 屏蔽装置至少屏蔽射频信号，屏蔽装置至少围绕模拟数字转换器。 在至少一个本地线圈和模数转换器之间布置至少一个频率滤波器，该频率滤波器对于具有中频信号的中频的信号呈现传输范围。 数字化信号从本地线圈装置发送。

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：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。