公开(公告)号：US20150241528A1

公开(公告)日：2015-08-27

申请号：US14632154

申请日：2015-02-26

申请人： Andreas Fackelmeier ,  Sebastian Martius ,  Robert Rehner ,  Christopher Stumpf ,  Markus Vester

发明人： Andreas Fackelmeier ,  Sebastian Martius ,  Robert Rehner ,  Christopher Stumpf ,  Markus Vester

IPC分类号： G01R33/36 ,  G01R33/48 ,  G01R33/34

CPC分类号： G01R33/3657 ,  G01R33/34023

摘要： An arrangement includes a superconducting split ring resonator, a cryostat, and a copper coil. The resonator is arranged in the cryostat and includes at least one ring-shaped conductor made of a superconducting material and including an opening and a taper. The copper coil may be used to transmit a MRI excitation signal. This signal causes a current to be induced in the conductor that leads to the breakdown of the superconductivity. The conductor is detuned and therefore no longer develops an interfering effect. It is possible for the effect of the breakdown of superconductivity to be used for detuning in a targeted manner. After the transmission is complete, the conductor returns into the superconducting state and acts as a superconducting reception antenna for the MRI measurement signal. The copper coil is inductively coupled to the conductor and configured to read out the signal induced in the conductor.

摘要翻译： 一种装置包括超导分裂环谐振器，低温恒温器和铜线圈。 谐振器布置在低温恒温器中，并且包括由超导材料制成并且包括开口和锥形的至少一个环形导体。 铜线圈可用于传输MRI激励信号。 该信号导致导体中导致的电流导致超导性的破坏。 导体失谐，因此不再产生干扰效应。 有可能以有目的的方式将超导性破坏的效果用于失谐。 传输完成后，导体返回超导状态，作为MRI测量信号的超导接收天线。 铜线圈感应耦合到导体并且被配置为读出在导体中感应的信号。

公开(公告)号：US20150061681A1

公开(公告)日：2015-03-05

申请号：US14468937

申请日：2014-08-26

申请人： Wolfgang Renz ,  Markus Vester

发明人： Wolfgang Renz ,  Markus Vester

IPC分类号： G01R33/36

CPC分类号： G01R33/36 ,  G01R33/288 ,  G01R33/3607 ,  G01R33/3635 ,  G01R33/3678

摘要： The embodiments relate to a method, a MRI device, and a circuit for an imaging magnetic resonance imaging device that includes at least one transmission coil for transmitting a magnetic field, where the circuit includes a hybrid coupler and at least one phase shifter that may be or are arranged in the transmission path between an amplifier and at least one transmission coil of the magnetic resonance imaging device.

摘要翻译： 实施例涉及一种用于成像磁共振成像装置的方法，MRI装置和电路，其包括用于传输磁场的至少一个传输线圈，其中电路包括混合耦合器和至少一个移相器 或者布置在放大器与磁共振成像装置的至少一个传输线圈之间的传输路径中。

公开(公告)号：US20150048823A1

公开(公告)日：2015-02-19

申请号：US14340990

申请日：2014-07-25

申请人： Andreas Fackelmeier ,  Sebastian Martius ,  Markus Vester

发明人： Andreas Fackelmeier ,  Sebastian Martius ,  Markus Vester

IPC分类号： G01R33/34

CPC分类号： G01R33/34 ,  G01R33/341 ,  G01R33/3415 ,  G01R33/3642 ,  G01R33/3685

摘要： An antenna apparatus is described, for receiving magnetic resonance signals from an examination object during magnetic resonance imaging using a magnetic resonance device. The antenna apparatus includes a resonator with a plurality of electrically conductive conductor loops, which are each interrupted by a number of electrically insulating slits. The antenna apparatus further includes a carrier substrate for holding the conductor loops and a cable connection apparatus having a number of shielding apparatuses. At least one of the number of shielding apparatuses provides a conductive coupling to a virtual ground of at least one conductor loop. Moreover, an antenna array apparatus, a magnetic resonance system and a method for receiving magnetic resonance signals from an examination object during magnetic resonance imaging using a magnetic resonance device are described.

摘要翻译： 描述了一种用于在使用磁共振装置的磁共振成像期间从检查对象接收磁共振信号的天线装置。 天线装置包括具有多个导电导体环的谐振器，每个导电导体环被多个电绝缘狭缝间断。 天线装置还包括用于保持导体环的载体基板和具有多个屏蔽装置的电缆连接装置。 多个屏蔽装置中的至少一个提供与至少一个导体环路的虚拟接地的导电耦合。 此外，描述了使用磁共振装置的磁共振成像期间的天线阵列装置，磁共振系统和从检查对象接收磁共振信号的方法。

公开(公告)号：US08779771B2

公开(公告)日：2014-07-15

申请号：US13213253

申请日：2011-08-19

申请人： Bjoern Heismann ,  Sebastian Schmidt ,  Markus Vester ,  Anke Weissenborn

发明人： Bjoern Heismann ,  Sebastian Schmidt ,  Markus Vester ,  Anke Weissenborn

IPC分类号： G01V3/00

CPC分类号： A61B5/055 ,  A61B5/0263 ,  A61B5/4064

摘要： In a magnetic resonance marking system marking a flowing medium in a marking region, as well as in a magnetic resonance system with such a magnetic resonance marking system, a method to control a magnetic resonance marking system, and a method to generate magnetic resonance exposures, a radio-frequency transmission device generates marking radio-frequency signals, and a marking radio-frequency transmission coil emits the marking radio-frequency signals in the marking region. A magnetic field determination device determines a magnetic field strength in the marking region, and a control unit derives a marking transmission frequency from the determined magnetic field strength and to control the radio-frequency transmission device so that marking radio-frequency signals at the derived marking transmission frequency are emitted by the marking radio-frequency transmission coil.

摘要翻译： 在标记区域中的流动介质的磁共振标记系统中，以及在具有这种磁共振标记系统的磁共振系统中，控制磁共振标记系统的方法和产生磁共振曝光的方法， 射频发送装置生成标记射频信号，标记射频发送线圈在标记区域发出标记射频信号。 磁场确定装置确定标记区域中的磁场强度，并且控制单元从确定的磁场强度导出标记传输频率，并且控制射频传输装置，从而在导出的标记处标记射频信号 传输频率由标记射频发射线圈发射。

公开(公告)号：US20130271143A1

公开(公告)日：2013-10-17

申请号：US13861249

申请日：2013-04-11

申请人： Markus Vester

发明人： Markus Vester

IPC分类号： G01R33/36

CPC分类号： G01R33/3628 ,  G01R33/365

摘要： A magnetic resonance coil arrangement for a magnetic resonance device includes at least two coil elements that may be read and/or controlled via an amplifier, and a matching circuit for power and/or noise matching between the at least two coil elements and the amplifier. Components of the matching circuit are dimensioned for wideband matching to a frequency band. The frequency band is limited by outermost relevant coupling modes that are displaced from the resonant frequency. The coupling modes occur due to the interaction of a coil element with at least one adjacent coil element.

摘要翻译： 用于磁共振装置的磁共振线圈装置包括可以经由放大器读取和/或控制的至少两个线圈元件，以及用于至少两个线圈元件和放大器之间的功率和/或噪声匹配的匹配电路。 匹配电路的组件的尺寸用于与频带的宽带匹配。 频带受到从谐振频率偏移的最外面的相关耦合模式的限制。 耦合模式由于线圈元件与至少一个相邻的线圈元件的相互作用而发生。

公开(公告)号：US08547097B2

公开(公告)日：2013-10-01

申请号：US12823177

申请日：2010-06-25

申请人： Matthias Gebhardt ,  Markus Vester

发明人： Matthias Gebhardt ,  Markus Vester

IPC分类号： G01V3/00 ,  G01R33/48

CPC分类号： G01R33/288 ,  G01R33/3415 ,  G01R33/5612

摘要： In a device and a method to determine SAR for a magnetic resonance tomography transmission system with multiple antenna elements, a single-column cross-correlation matrix of an antenna element matrix of antenna element values of multiple antenna elements of the magnetic resonance tomography transmission system is determined for each of multiple points in time or time periods. These single-column cross-correlation matrices are added into a sum cross-correlation matrix over a summation time period and the sum cross-correlation matrix is multiplied with a hotspot sensitivity matrix. The hotspot sensitivity matrix represents the sensitivities in at least one direction at a number of hotspot points in a subject located in the magnetic resonance tomography transmission system. The product of the sum cross-correlation matrix and the hotspot sensitivity matrix is multiplied with a value representing the dielectricity at least one hotspot point in order to determine a respective SAR value for hotspot points. If at least one SAR value exceeds a predetermined upper limit, the voltage applied to at least one antenna element or the current flowing in at least one antenna element is reduced or deactivated.

摘要翻译： 在用于确定具有多个天线元件的磁共振断层摄影传输系统的SAR的装置和方法中，磁共振断层摄影传输系统的多个天线元件的天线元素值的天线元素矩阵的单列互相关矩阵是 确定在时间或时间段的多个点的每个。 这些单列互相关矩阵通过求和时间周期加到和互相关矩阵中，并且和互相关矩阵乘以热点灵敏度矩阵。 热点灵敏度矩阵表示在位于磁共振断层摄影传输系统中的被摄体的多个热点处的至少一个方向上的灵敏度。 将和互相关矩阵和热点灵敏度矩阵的乘积乘以表示至少一个热点的电介质的值，以便确定热点的相应SAR值。 如果至少一个SAR值超过预定的上限，则施加到至少一个天线元件的电压或者在至少一个天线元件中流动的电流被减少或去激活。

公开(公告)号：US20130200894A1

公开(公告)日：2013-08-08

申请号：US13560780

申请日：2012-07-27

申请人： Andre Albsmeier ,  Jan Bollenbeck ,  Daniel Evers ,  Klaus Pistor ,  Stefan Schwarzer ,  Markus Vester

发明人： Andre Albsmeier ,  Jan Bollenbeck ,  Daniel Evers ,  Klaus Pistor ,  Stefan Schwarzer ,  Markus Vester

IPC分类号： G01R33/36

CPC分类号： G01R33/36 ,  A61B5/055 ,  G01R33/288 ,  G01R33/3415 ,  G01R33/3692

摘要： A method for wireless transfer of energy to a local coil system for a magnetic resonance system is provided. The method includes determining an energy requirement value representing a minimum energy level to be fed to the local coil system, so that the local coil system may carry out a predetermined function over a predetermined time period. Energy is transferred adaptively to the local coil system depending on the energy requirement value.

摘要翻译： 提供了一种将能量无线传递到用于磁共振系统的局部线圈系统的方法。 该方法包括确定表示要馈送到局部线圈系统的最小能级的能量需求值，使得局部线圈系统可以在预定时间段内执行预定功能。 能量根据能量需求值自适应地转移到局部线圈系统。

公开(公告)号：US20120249148A1

公开(公告)日：2012-10-04

申请号：US13436576

申请日：2012-03-30

申请人： Daniel Evers ,  Klaus Huber ,  Florian Poprawa ,  Christina Schindler ,  Markus Vester ,  Jörg Zapf

发明人： Daniel Evers ,  Klaus Huber ,  Florian Poprawa ,  Christina Schindler ,  Markus Vester ,  Jörg Zapf

IPC分类号： G01R33/34 ,  H01F41/04

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

摘要： The present embodiments relate to a magnetic resonance local coil with a receive antenna for receiving magnetic resonance signals. The magnetic resonance local coil also includes a transmission unit for transmitting magnetic resonance signal data generated on the basis of the magnetic resonance signals via a data transmit antenna of the magnetic resonance local coil to a signal data receiving unit of a magnetic resonance tomography systems. The transmission unit is provided, at least in sections, with screening with a first metal coating and a first dielectric coating.

摘要翻译： 本实施例涉及具有用于接收磁共振信号的接收天线的磁共振局部线圈。 磁共振局部线圈还包括传输单元，用于将通过磁共振局部线圈的数据发射天线的磁共振信号产生的磁共振信号数据发送到磁共振断层摄影系统的信号数据接收单元。 传动单元至少在分段上设置有第一金属涂层和第一介电涂层的筛选。

公开(公告)号：US20120249135A1

公开(公告)日：2012-10-04

申请号：US13436588

申请日：2012-03-30

申请人： Andre Albsmeier ,  Jan Bollenbeck ,  Florian Poprawa ,  Stefan Schwarzer ,  Markus Vester

发明人： Andre Albsmeier ,  Jan Bollenbeck ,  Florian Poprawa ,  Stefan Schwarzer ,  Markus Vester

IPC分类号： G01R33/44

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

摘要： The present embodiments relate to a local coil system for a magnetic resonance system. The local coil system includes at least one local coil for detecting MR response signals and at least one transmitting device for the wireless transmission of signals to a receiver of the magnetic resonance system. The local coil system is embodied with a transmitter-side diversity. A receiver-side diversity may exist in the magnetic resonance system.

摘要翻译： 本实施例涉及一种用于磁共振系统的局部线圈系统。 本地线圈系统包括用于检测MR响应信号的至少一个本地线圈和用于将信号无线传输到磁共振系统的接收器的至少一个发送装置。 本地线圈系统具有发射机侧分集。 在磁共振系统中可能存在接收机侧分集。

公开(公告)号：US20120224647A1

公开(公告)日：2012-09-06

申请号：US13221652

申请日：2011-08-30

申请人： Klaus Huber ,  Clemens Jungkunz ,  Sebastian Martius ,  Martin Nisznansky ,  Markus Vester

发明人： Klaus Huber ,  Clemens Jungkunz ,  Sebastian Martius ,  Martin Nisznansky ,  Markus Vester

IPC分类号： H04L27/00

CPC分类号： G01R33/3607

摘要： A method for controlling a signal with a plurality of independent components is provided. The signal is fed as an input signal via an input path to a control path that supplies an output signal. The output signal is fed via an output path to a control apparatus controlling the input signal. A coupling signal is determined in a coupling determination apparatus. On the basis of the coupling signal, the independent components are decoupled in a decoupling apparatus, as a result of which, a decoupled output signal is generated. Components of the decoupled output signal are decoupled from the components of the input signal. The decoupled output signal is fed as a control variable to the control apparatus. The control apparatus controls each independent component separately on the basis of a desired signal with a diagonal controller and outputs the input signal as a manipulated variable.

摘要翻译： 提供了一种用多个独立部件控制信号的方法。 信号通过输入路径作为输入信号馈送到提供输出信号的控制路径。 输出信号通过输出路径馈送到控制输入信号的控制装置。 在耦合确定装置中确定耦合信号。 在耦合信号的基础上，独立分量在去耦装置中解耦，其结果是产生解耦输出信号。 去耦输出信号的分量与输入信号的分量去耦。 去耦输出信号作为控制变量馈送给控制装置。 控制装置基于具有对角线控制器的期望信号分别控制各独立分量，并输出输入信号作为操作变量。