公开(公告)号：US20120249140A1

公开(公告)日：2012-10-04

申请号：US13432437

申请日：2012-03-28

Applicant: Andre Albsmeier ,  Jan Bollenbeck ,  Klaus Pistor ,  Florian Poprawa ,  Stefan Schwarzer ,  Markus Vester ,  Thomas Wuchenauer

Inventor： Andre Albsmeier ,  Jan Bollenbeck ,  Klaus Pistor ,  Florian Poprawa ,  Stefan Schwarzer ,  Markus Vester ,  Thomas Wuchenauer

IPC: G01R33/341 ,  G01R33/48

CPC classification number: G01R33/3692 ,  G01R33/3415 ,  G01R33/3621

Abstract: A local coil system for a magnetic resonance system has a local coil for detecting MR response signals and a transmitter for wirelessly transmitting signals to the magnetic resonance system. At least one pseudo random device is operable to change signals in a pseudo random fashion in order to avoid interferences in the imaging.

Abstract translation: 用于磁共振系统的局部线圈系统具有用于检测MR响应信号的本地线圈和用于将信号无线传输到磁共振系统的发射器。 至少一个伪随机设备可操作以伪随机方式改变信号，以避免成像中的干扰。

公开(公告)号：US20120071117A1

公开(公告)日：2012-03-22

申请号：US13069272

申请日：2011-03-22

Applicant: STEPHAN BIBER ,  Jan Bollenbeck ,  Ralph Oppelt ,  Markus Vester

Inventor： STEPHAN BIBER ,  Jan Bollenbeck ,  Ralph Oppelt ,  Markus Vester

IPC: H04B1/04

CPC classification number: G01R33/36 ,  G01R33/3621

Abstract: Front bandpass filters that are essentially transmissive only between a minimum frequency and a maximum frequency filter the magnetic resonance signals. Front frequency mixers mix output signals of each of the bandpass filters with a front LO frequency that is standard for all the magnetic resonance signals. Rear bandpass filters that are essentially transmissive only around a front intermediate frequency filter the output signals of the front frequency mixers. Rear frequency mixers mix output signals of each of the rear bandpass filters with a respective constant rear LO frequency. Frequency filters that are transmissive for frequencies in the range of the difference of the rear LO frequency that is supplied to the rear frequency mixer arranged upstream thereof and the front intermediate frequency filter the output signals of the rear frequency mixers. Output signals of the frequency filters are combined into a common signal, which is transmitted onward.

Abstract translation: 仅在最小频率和最大频率之间基本上透射的前带通滤波器对磁共振信号进行滤波。 前置频率混频器将每个带通滤波器的输出信号与前置LO频率混合，这是所有磁共振信号的标准。 后置带通滤波器，其基本上仅在前置中频上滤波前频率混频器的输出信号。 后混频器将每个后带通滤波器的输出信号与相应的恒定后置LO频率混合。 频率滤波器对于提供给布置在其上游的后部混频器的后部LO频率的差异范围内的频率以及前部中频滤波器的后部混频器的输出信号的频率进行透射。 频率滤波器的输出信号被组合成公共信号，该公共信号向前发送。

公开(公告)号：US20110109315A1

公开(公告)日：2011-05-12

申请号：US12893286

申请日：2010-09-29

Applicant: Stephan Biber ,  Jan Bollenbeck ,  Markus Vester

Inventor： Stephan Biber ,  Jan Bollenbeck ,  Markus Vester

IPC: G01R33/44

CPC classification number: G01R33/3692 ,  G01R33/341 ,  G01R33/3415 ,  G01R33/3621 ,  G01R33/422

Abstract: 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.

Abstract translation: 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，至少一个局部线圈被形成为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：US07606551B2

公开(公告)日：2009-10-20

申请号：US11680720

申请日：2007-03-01

Applicant: Jan Bollenbeck ,  Martin Hergt ,  Markus Vester

Inventor： Jan Bollenbeck ,  Martin Hergt ,  Markus Vester

IPC: H04B1/26 ,  H04B15/00

CPC classification number: H03D7/1408

Abstract: In a mixer circuit with a balanced frequency mixer with varactor diodes, a first input signal that exhibits a first input frequency can be fed to the frequency mixer via a first input. Furthermore, a second input signal that exhibits a second input frequency can be fed to the frequency mixer via a second input. The frequency mixer has at least two amplifier elements fashioned as varactor diodes. These amplifier elements mix the input signals with one another into a mix signal with a first signal component and a second signal component. The first signal component exhibits a first component frequency, the second signal component a second component frequency. The first component frequency is equal to the sum of the first and second input frequencies, the second component frequency is equal to the difference of the first and second input frequencies. An output signal that contains at least one of the signal components can be tapped via the output. The frequency mixer is fashioned as a balanced frequency mixer in which at least the second input and the output are decoupled from one another. The second input frequency is a multiple of the first input frequency. An adjustment circuit for adjustment of an operating point of the varactor diodes is connected in parallel with each varactor diode.

Abstract translation: 在具有具有变容二极管的平衡混频器的混频器电路中，具有第一输入频率的第一输入信号可以经由第一输入馈送到混频器。 此外，具有第二输入频率的第二输入信号可以经由第二输入馈送到混频器。 混频器具有至少两个放大器元件，其形式为变容二极管。 这些放大器元件将输入信号彼此混合成具有第一信号分量和第二信号分量的混合信号。 第一信号分量呈现第一分量频率，第二信号分量呈现第二分量频率。 第一分量频率等于第一和第二输入频率的和，第二分量频率等于第一和第二输入频率的差。 包含至少一个信号分量的输出信号可以通过输出进行抽头。 混频器被形成为平衡混频器，其中至少第二输入和输出彼此解耦。 第二输入频率是第一输入频率的倍数。 用于调整变容二极管的工作点的调整电路与每个变容二极管并联连接。

公开(公告)号：US07459946B2

公开(公告)日：2008-12-02

申请号：US11443558

申请日：2006-05-30

Applicant: Jan Bollenbeck ,  Markus Vester

Inventor： Jan Bollenbeck ,  Markus Vester

IPC: H03B19/00

CPC classification number: H03J7/08 ,  H03H7/0161 ,  H03H7/20 ,  H03H2009/02204 ,  H03J7/065 ,  H03L7/0805 ,  H03L7/0812

Abstract: In a circuit arrangement for generation of a reference signal with an oscillation generator, a phase-controlled filter and a frequency multiplier are arranged downstream from the oscillation generator. The frequency multiplier is connected with an output for emission of the reference signal.

Abstract translation: 在用振荡发生器产生参考信号的电路装置中，相位控制滤波器和倍频器布置在振荡发生器的下游。 倍频器与用于发射参考信号的输出端相连。

公开(公告)号：US10393845B2

公开(公告)日：2019-08-27

申请号：US15368607

申请日：2016-12-03

Applicant: Steffen Schröter ,  Jan Bollenbeck ,  Matthias Fenchel ,  Peter Speier ,  Markus Vester

Inventor： Steffen Schröter ,  Jan Bollenbeck ,  Matthias Fenchel ,  Peter Speier ,  Markus Vester

IPC: G01R33/36 ,  G01R33/565

Abstract: A transmitter for pilot tone navigation in a magnetic resonance tomography system includes a power supply and an antenna. The transmitter is configured to transmit a pilot tone signal via the antenna. The transmitter also includes a decoupling element in order to protect a transmitter output from signals that the antenna receives with excitation pulses of the magnetic resonance tomography system during a magnetic resonance tomography. In a method, movement-dependent changes to the pilot tone signal of the transmitter are identified by a controller of the magnetic resonance tomography system.

公开(公告)号：US10338182B2

公开(公告)日：2019-07-02

申请号：US14657852

申请日：2015-03-13

Applicant: Stephan Biber ,  Jan Bollenbeck

Inventor： Stephan Biber ,  Jan Bollenbeck

IPC: G01R33/36 ,  G01R33/54 ,  G01R33/58

Abstract: A receiver assembly of a magnetic resonance (MR) system for generating MR recordings of an examination object includes a plurality of reception channels for receiving and amplifying MR signals from reception coils of the MR system connected therewith. A calibration data memory for storing calibration data for the plurality of reception channels is arranged on the receiver assembly. The receiver assembly includes a data link for transmitting the calibration data to the MR system.

公开(公告)号：US09897671B2

公开(公告)日：2018-02-20

申请号：US13605928

申请日：2012-09-06

Applicant: Jan Bollenbeck ,  Klaus Porzelt ,  Wilfried Schnell

Inventor： Jan Bollenbeck ,  Klaus Porzelt ,  Wilfried Schnell

IPC: G01R33/3415 ,  G01R33/36

CPC classification number: G01R33/3664 ,  G01R33/3415 ,  G01R33/3657

Abstract: A detuning apparatus for a receive coil for a magnetic resonance device includes a number of coil elements. The coil elements may be selectively connected to a receive channel of a data processing apparatus by way of a switching apparatus. Each of the coil elements includes at least one detuning assembly such as, for example, a PIN diode that may be switched between a detuning state and a receive state by way of a continuous switching signal. A controller is provided to switch the switching apparatus and to generate the switching signals. The detuning apparatus has first diplexers connected upstream of the switching apparatus for injecting switching signals for switching the detuning assembly for coil elements to be detuned dynamically. The detuning apparatus also includes detuning modules for each of the coil elements to switch the detuning assembly to the detuning state if there is no switching signal present.

公开(公告)号：US09395426B2

公开(公告)日：2016-07-19

申请号：US13560780

申请日：2012-07-27

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

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

IPC: G01R33/36 ,  A61B5/055 ,  G01R33/28 ,  G01R33/3415

CPC classification number: G01R33/36 ,  A61B5/055 ,  G01R33/288 ,  G01R33/3415 ,  G01R33/3692

Abstract: 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.

Abstract translation: 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：US20150260821A1

公开(公告)日：2015-09-17

申请号：US14657852

申请日：2015-03-13

Applicant: Stephan Biber ,  Jan Bollenbeck

Inventor： Stephan Biber ,  Jan Bollenbeck

IPC: G01R33/58 ,  G01R33/34 ,  G01R33/54 ,  G01R33/30

CPC classification number: G01R33/583 ,  G01R33/3621 ,  G01R33/543

Abstract: A receiver assembly of a magnetic resonance (MR) system for generating MR recordings of an examination object includes a plurality of reception channels for receiving and amplifying MR signals from reception coils of the MR system connected therewith. A calibration data memory for storing calibration data for the plurality of reception channels is arranged on the receiver assembly. The receiver assembly includes a data link for transmitting the calibration data to the MR system.

Abstract translation: 用于产生检查对象的MR记录的磁共振（MR）系统的接收器组件包括用于从与其连接的MR系统的接收线圈接收和放大MR信号的多个接收通道。 用于存储多个接收通道的校准数据的校准数据存储器被布置在接收器组件上。 接收器组件包括用于将校准数据发送到MR系统的数据链路。