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194 条记录 (耗时 0.018 秒)

    PRINTED CIRCUIT BOARD WITH INTEGRATED SHIELDING
    31.
    发明申请
    PRINTED CIRCUIT BOARD WITH INTEGRATED SHIELDING 有权
    印刷电路板与集成屏蔽

    公开(公告)号：US20120187950A1

    公开(公告)日：2012-07-26

    申请号：US13188370

    申请日：2011-07-21

    申请人： Stephan Biber ,  Heinz Hahn ,  Martin Hemmerlein ,  Jörg Rothard

    发明人： Stephan Biber ,  Heinz Hahn ,  Martin Hemmerlein ,  Jörg Rothard

    IPC分类号： G01R33/20 ,  H05K1/16

    CPC分类号： G01R33/3685 ,  G01R33/36 ,  G01R33/422

    摘要： A printed circuit board (PCB) is flat, providing a top side and a bottom side. A plurality of terminations is disposed on the top side in proximity to one end face of the PCB. Each termination has at least one contact that is connected to a respective conductor track of the PCB. The respective conductor track is connected to a respective local coil or to a contact disposed on the top side or the bottom side of a respective further termination. The local coil and/or at least one of the further terminations are disposed in proximity to the other end face. A basic shield impervious to frequencies in a magnetic resonance range is disposed on the top side and/or the bottom side, and an auxiliary shield electrically connected to the basic shield and impervious to frequencies in the magnetic resonance range is disposed on narrow sides of the PCB.

    摘要翻译： 印刷电路板（PCB）是平的，提供顶侧和底侧。 多个端子设置在靠近PCB的一个端面的顶侧上。 每个终端具有连接到PCB的相应导体轨道的至少一个触点。 相应的导体轨道连接到相应的局部线圈或设置在相应的另一终端的顶侧或底侧的触点。 局部线圈和/或至少其中一个其它终端设置在另一端面附近。 在磁共振范围内的频率不受阻碍的基本屏蔽设置在顶侧和/或底侧，并且电连接到基本屏蔽并且不受磁共振范围内频率的辅助屏蔽设置在 PCB。

    ARRANGEMENT TO TRANSMIT MAGNETIC RESONANCE SIGNALS
    34.
    发明申请
    ARRANGEMENT TO TRANSMIT MAGNETIC RESONANCE SIGNALS 有权
    发射磁共振信号的安排

    公开(公告)号：US20090286478A1

    公开(公告)日：2009-11-19

    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。

    Device and method for an asymmetrical bus interface for a local coil
    35.
    发明授权
    Device and method for an asymmetrical bus interface for a local coil 有权

    公开(公告)号：US10794972B2

    公开(公告)日：2020-10-06

    申请号：US15962771

    申请日：2018-04-25

    申请人： Stephan Biber

    发明人： Stephan Biber

    IPC分类号： G01R33/36 ,  G01R33/54 ,  H04L1/00

    摘要： The disclosure relates to a local coil as well as a system including a magnetic resonance tomography system with a local coil. The local coil includes a data source and a signal output in signal communication with the data source for outputting data from the data source. The data source is configured to transmit a plurality of data items via the signal output. To this end, the signal output includes a radio-frequency source and a modulator and is configured to modulate to transmit the data from the data source onto a carrier frequency of the radio-frequency source by the modulator.

    REDUNDANT COOLING SYSTEM FOR A MAGNETIC RESONANCE TOMOGRAPHY SYSTEM
    38.
    发明申请
    REDUNDANT COOLING SYSTEM FOR A MAGNETIC RESONANCE TOMOGRAPHY SYSTEM 审中-公开

    公开(公告)号：US20180081012A1

    公开(公告)日：2018-03-22

    申请号：US15712725

    申请日：2017-09-22

    申请人： Stephan Biber

    发明人： Stephan Biber

    IPC分类号： G01R33/38 ,  H01F6/04

    CPC分类号： G01R33/3804 ,  F25B2600/25 ,  G01R33/3815 ,  G01R33/385 ,  H01F6/04

    摘要： A cooling system for a magnetic resonance tomography system is provided. The cooling system includes a first coolant circuit with a first coolant pump and a first heat exchanger in thermal contact with an object to be cooled. The first cooling circuit further includes a switchover apparatus that is configured to adjust a heat flow from the first coolant circuit optionally to a first heat sink and/or a second heat sink. In such cases the second heat sink is a second heat exchanger that is fluidically connected to an emergency cooling system.

    MR marker for magnetic resonance imaging
    39.
    发明授权
    MR marker for magnetic resonance imaging 有权

    公开(公告)号：US09903924B2

    公开(公告)日：2018-02-27

    申请号：US14450416

    申请日：2014-08-04

    申请人： Stephan Biber

    发明人： Stephan Biber

    IPC分类号： G01R33/34 ,  G01R33/36 ,  G01R33/58 ,  G01R33/422

    CPC分类号： G01R33/34084 ,  G01R33/3642 ,  G01R33/3664 ,  G01R33/3692 ,  G01R33/422 ,  G01R33/58

    摘要： An MR marker for magnetic resonance imaging includes: (1) a closed volume containing a marker medium, (2) a first marker coil surrounding the volume for detecting an MR signal from the marker medium, (3) an RF shield which surrounds at least the volume and the first marker coil and screens against external RF fields, (4) a second marker coil, arranged outside the RF shield, for inductive and/or capacitive coupling to a magnetic field, and/or for emitting the MR signal detected by the first marker coil, (5) a first electrical interface for controllable electrical connection of the first marker coil to the magnetic resonance imaging scanner, (6) a second electrical interface for controllable coupling of the second marker coil and first marker coil, and (7) an electrical controller with which the first interface and/or the second interface may be controlled.