公开(公告)号：US10481227B2

公开(公告)日：2019-11-19

申请号：US15585769

申请日：2017-05-03

申请人： Stephan Biber ,  Jan Bollenbeck ,  Martin Hemmerlein

发明人： Stephan Biber ,  Jan Bollenbeck ,  Martin Hemmerlein

IPC分类号： G01R33/36 ,  G01R33/385 ,  G01R33/3815 ,  H03H7/42

摘要： A transmission apparatus for transmitting an intermediate frequency signal and an oscillator signal for mixing down the intermediate frequency signal, a magnetic resonance tomograph with a local coil, a receive unit, and a transmission apparatus are provided. The transmission apparatus has a symmetrical transmission line for transmission of the oscillator signal and the intermediate frequency signal and a symmetrizing element for adaptation of an unsymmetrical signal source and/or signal sink to the symmetrical transmission line. The symmetrizing element has only ferrite-free inductances. The local coil and the receive unit are connected for signaling purposes via the transmission apparatus.

公开(公告)号：US20170322267A1

公开(公告)日：2017-11-09

申请号：US15585769

申请日：2017-05-03

申请人： Stephan Biber ,  Jan Bollenbeck ,  Martin Hemmerlein

发明人： Stephan Biber ,  Jan Bollenbeck ,  Martin Hemmerlein

IPC分类号： G01R33/36 ,  G01R33/385 ,  G01R33/3815

CPC分类号： G01R33/3621 ,  G01R33/3815 ,  G01R33/385 ,  H03H7/42

摘要： A transmission apparatus for transmitting an intermediate frequency signal and an oscillator signal for mixing down the intermediate frequency signal, a magnetic resonance tomograph with a local coil, a receive unit, and a transmission apparatus are provided. The transmission apparatus has a symmetrical transmission line for transmission of the oscillator signal and the intermediate frequency signal and a symmetrizing element for adaptation of an unsymmetrical signal source and/or signal sink to the symmetrical transmission line. The symmetrizing element has only ferrite-free inductances. The local coil and the receive unit are connected for signaling purposes via the transmission apparatus.

公开(公告)号：US20180299522A1

公开(公告)日：2018-10-18

申请号：US15951156

申请日：2018-04-11

申请人： Stephan Biber ,  Jan Bollenbeck ,  Sven Heggen ,  Martin Nisznansky ,  Markus Vester

发明人： Stephan Biber ,  Jan Bollenbeck ,  Sven Heggen ,  Martin Nisznansky ,  Markus Vester

IPC分类号： G01R33/36 ,  G01R33/3415

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

摘要： A device for recovering a temporal reference in a free-running magnetic resonance tomography (MRT) receive chain includes a time reference encoder and a time reference decoder. The time reference encoder is configured to generate a modulation signal as a function of a reference clock, where the modulation signal is configured for a correlation with a temporal resolution less than a maximum predetermined phase deviation and a maximum that may clearly be identified. The time reference decoder is configured to receive, via the first signal input, a receive signal as a function of the modulation signal, perform a correlation with a reference signal, and generate a signal as a function of a temporal reference of the modulation signal in the receive signal in relation to the reference signal.

公开(公告)号：US20160077174A1

公开(公告)日：2016-03-17

申请号：US14842033

申请日：2015-09-01

申请人： Stephan Biber ,  Jan Bollenbeck

发明人： Stephan Biber ,  Jan Bollenbeck

IPC分类号： G01R33/36

CPC分类号： G01R33/3621 ,  G01R33/3664

摘要： The embodiments relate to a method and a receiving system for an imaging magnetic resonance tomography system. The receiving system includes at least one multiplexer entity for a plurality of receive signals, which respectively come from an antenna of a local coil and may be switched to an analog-digital converter, wherein sampling rates (e.g., 20 MS/s per Ch, 40 MS/s per Ch, 80 MS/s per Ch) of an analog-digital converter for the sampling of a receive signal may be changed.

摘要翻译： 实施例涉及用于成像磁共振断层摄影系统的方法和接收系统。 接收系统包括用于多个接收信号的至少一个多路复用器实体，其分别来自本地线圈的天线并且可以切换到模数转换器，其中采样速率（例如，每个Ch的20MS / s， 可以改变用于接收信号采样的模拟数字转换器的每个Ch的40MS / s，每个Ch的80MS / s）。

公开(公告)号：US20150070014A1

公开(公告)日：2015-03-12

申请号：US14483795

申请日：2014-09-11

申请人： Stephan Biber ,  Jan Bollenbeck ,  Markus Vester ,  JianMin Wang

发明人： Stephan Biber ,  Jan Bollenbeck ,  Markus Vester ,  JianMin Wang

IPC分类号： G01R33/341 ,  G01R33/54 ,  G01R33/36 ,  G01R33/385

CPC分类号： G01R33/341 ,  G01R33/3415 ,  G01R33/3621 ,  G01R33/3664 ,  G01R33/3852 ,  G01R33/54

摘要： A method and an apparatus for a magnetic resonance imaging system are provided. A type of further processing of signals transmitted by a local coil to a magnetic resonance imaging (MRI) system is determined in dependence on information received in or from the local coil about a local-coil type of the local coil.

摘要翻译： 提供了一种用于磁共振成像系统的方法和装置。 根据本地线圈关于局部线圈类型的本地线圈接收的信息来确定由局部线圈传输到磁共振成像（MRI）系统的信号的进一步处理的类型。

公开(公告)号：US08055196B2

公开(公告)日：2011-11-08

申请号：US12465147

申请日：2009-05-13

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： H04B7/00

CPC分类号： G01R33/3664 ,  G01R33/3415 ,  G01R33/3607 ,  G01R33/3621 ,  G01R33/3635

摘要： An arrangement for transmitting magnetic resonance signals, with a transmission link that connects a local coil with a receiver, has a first channel of the local coil with a first single antenna to acquire a first magnetic resonance signal, as well as a first mixer connected with the first single antenna. The first mixer forms an intermediate-frequency first signal from the supplied first magnetic resonance signal. A second channel of the local coil has a second single antenna to acquire a second magnetic resonance signal, as well as a second mixer connected with the second single antenna. The second mixer forms an intermediate-frequency second signal from the supplied second magnetic resonance signal. The local coil has a device for signal combination that, by frequency multiplexing, that combines the intermediate-frequency first signal of the first channel and the intermediate-frequency second signal of the second channel so that it arrives at the receiver via the transmission path. The receiver has an A/D converter at which one of the transmitted intermediate-frequency signals of an associated channel arrives in order to be sampled with a sampling frequency for digitization. For frequency conversion, a first local oscillator frequency is connected at the first mixer and a second local oscillator frequency is connected at the second mixer. the first and second local oscillator frequencies are selected such that intermediate-frequencies formed by the frequency conversion are mirror-symmetrical relative to the sampling frequency of the A/D converter.

摘要翻译： 用于传输磁共振信号的装置，具有将本地线圈与接收器连接的传输链路，具有本地线圈的第一通道和第一单个天线以获取第一磁共振信号，以及与第 第一单天线。 第一混频器从所提供的第一磁共振信号形成中频第一信号。 本地线圈的第二通道具有用于获取第二磁共振信号的第二单个天线，以及与第二单个天线连接的第二混频器。 第二混频器从所提供的第二磁共振信号形成中频第二信号。 本地线圈具有用于信号组合的装置，通过频率复用，组合第一通道的中频第一信号和第二通道的中频第二信号，使得其经由传输路径到达接收器。 接收机具有A / D转换器，在该A / D转换器中，相关信道的所发送的中频信号中的一个到达，以便以用于数字化的采样频率进行采样。 对于频率转换，在第一混频器处连接第一本地振荡器频率，在第二混频器处连接第二本地振荡器频率。 选择第一和第二本地振荡器频率，使得由频率变换形成的中频相对于A / D转换器的采样频率是镜像对称的。

公开(公告)号：US20120071117A1

公开(公告)日：2012-03-22

申请号：US13069272

申请日：2011-03-22

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： H04B1/04

CPC分类号： G01R33/36 ,  G01R33/3621

摘要： 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.

摘要翻译： 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

申请人： Stephan Biber ,  Jan Bollenbeck ,  Markus Vester

发明人： Stephan Biber ,  Jan Bollenbeck ,  Markus Vester

IPC分类号： G01R33/44

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，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：US10338182B2

公开(公告)日：2019-07-02

申请号：US14657852

申请日：2015-03-13

申请人： Stephan Biber ,  Jan Bollenbeck

发明人： Stephan Biber ,  Jan Bollenbeck

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

摘要： 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：US20150260821A1

公开(公告)日：2015-09-17

申请号：US14657852

申请日：2015-03-13

申请人： Stephan Biber ,  Jan Bollenbeck

发明人： Stephan Biber ,  Jan Bollenbeck

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

CPC分类号： G01R33/583 ,  G01R33/3621 ,  G01R33/543

摘要： 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.

摘要翻译： 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。