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277 条记录 (耗时 0.022 秒)

    Local antenna device for transmitting magnetic resonance signals
    112.
    发明授权
    Local antenna device for transmitting magnetic resonance signals 有权

    公开(公告)号：US09625542B2

    公开(公告)日：2017-04-18

    申请号：US13632209

    申请日：2012-10-01

    申请人： Daniel Evers ,  Klaus Pistor ,  Florian Poprawa ,  Stefan Schwarzer ,  Markus Vester

    发明人： Daniel Evers ,  Klaus Pistor ,  Florian Poprawa ,  Stefan Schwarzer ,  Markus Vester

    IPC分类号： G01R33/34 ,  G01R33/54 ,  G01R33/36 ,  A61B5/055

    CPC分类号： G01R33/3692 ,  A61B5/055 ,  G01R33/34

    摘要： A local antenna device for transmitting magnetic resonance (MR) signals of a plurality of MR receiving antenna elements to an MR signal processing device is provided. The local antenna device includes a plurality of analog-to-digital converters for scanning the MR signals and converting the MR signals to digital MR data, and a plurality of transmitting antenna elements for wirelessly transmitting the digital MR data to the MR signal processing device by the emission of an electromagnetic field. The local antenna device includes a plurality of transmitting devices for triggering the transmitting antenna elements and a plurality of spacer elements that is arranged and embodied on the local antenna device such that at least a defined minimum emission spacing is produced between the plurality of transmitting antenna elements and articles adjoining the local antenna device in at least one direction of a principal axis of emission of the electromagnetic field.

    Receiving method, receiving system for magnetic resonance signals, and magnetic resonance imaging system
    113.
    发明授权
    Receiving method, receiving system for magnetic resonance signals, and magnetic resonance imaging system 有权
    接收方式，磁共振信号接收系统和磁共振成像系统

    公开(公告)号：US09465092B2

    公开(公告)日：2016-10-11

    申请号：US13689751

    申请日：2012-11-29

    申请人： Markus Vester ,  Jian Min Wang ,  Lan Wang ,  Zhi Bin Li

    发明人： Markus Vester ,  Jian Min Wang ,  Lan Wang ,  Zhi Bin Li

    IPC分类号： G01V3/00 ,  G01R33/54 ,  G01R33/36 ,  G01R33/3415

    CPC分类号： G01R33/54 ,  G01R33/3415 ,  G01R33/3621

    摘要： A method and system for receiving magnetic resonance signals, and a magnetic resonance imaging system are provided. The method includes dividing coil units in a receiving coil array into different coil unit groups. For each of the coil unit groups, correlations are established between carrier frequencies and the signals received by each coil unit in the coil unit group. Low noise amplification is performed, and filtering and frequency mixing is performed on the signals received by all the coil units in the coil unit group according to the correlations to obtain intermediate frequency signals borne on the respectively corresponding carrier frequencies of an identical channel. After performing amplification and filtering on the intermediate frequency signals, the intermediate frequency signals are output to an analog-to-digital conversion unit to perform digital sampling so as to obtain digital domain signals.

    摘要翻译： 提供一种用于接收磁共振信号的方法和系统，以及磁共振成像系统。 该方法包括将接收线圈阵列中的线圈单元分成不同的线圈单元组。 对于每个线圈单元组，在线圈单元组中的载波频率和每个线圈单元接收的信号之间建立相关性。 执行低噪声放大，并且根据相关性对线圈单元组中的所有线圈单元接收到的信号进行滤波和混频，以获得承载在相同信道的相应载波频率上的中频信号。 在对中频信号执行放大和滤波之后，将中频信号输出到模数转换单元进行数字采样，以获得数字域信号。

    MAGNETIC RESONANCE DEVICE
    114.
    发明申请
    MAGNETIC RESONANCE DEVICE 审中-公开
    磁共振装置

    公开(公告)号：US20160223629A1

    公开(公告)日：2016-08-04

    申请号：US15015093

    申请日：2016-02-03

    申请人： Stephan Biber ,  Andreas Fackelmeier ,  Markus Vester

    发明人： Stephan Biber ,  Andreas Fackelmeier ,  Markus Vester

    IPC分类号： G01R33/34 ,  G01R33/38

    CPC分类号： G01R33/3685

    摘要： An MR device includes at least one body coil for generating a B1 magnetic field and at least one radiofrequency line routed through the B1 magnetic field. The at least one radiofrequency line has at least one frequency filter for blocking a voltage induced by the B1 magnetic field. At least one section of the radiofrequency line routed through the B1 magnetic field is embodied in printed circuit board technology on at least one printed circuit board, and information-carrying signals may be transmitted over the at least one radiofrequency line on a different frequency than the frequency of the voltage induced by the B1 magnetic field.

    摘要翻译： MR装置包括用于产生B1磁场的至少一个体线圈和通过B1磁场路由的至少一个射频线。 所述至少一个射频线具有至少一个用于阻挡由B1磁场引起的电压的频率滤波器。 通过B1磁场路由的射频线路的至少一个部分在印刷电路板技术中体现在至少一个印刷电路板上，并且信息载体信号可以通过至少一个射频线路以不同于 由B1磁场引起的电压频率。

    D-shaped coil
    117.
    发明授权
    D-shaped coil 有权
    D形线圈

    公开(公告)号：US08901929B2

    公开(公告)日：2014-12-02

    申请号：US13171422

    申请日：2011-06-28

    申请人： Stephan Biber ,  Markus Vester

    发明人： Stephan Biber ,  Markus Vester

    IPC分类号： G01V3/00 ,  G01R33/3415 ,  G01R33/34

    CPC分类号： G01R33/3415 ,  G01R33/34007 ,  G01R33/34015 ,  G01R33/34023

    摘要： The present embodiments relates to a magnetic resonance tomography system having a coil system. The coil system includes an upper part having at least one antenna and a lower part having at least one antenna. The upper part of the coil arrangement is disposed above a bore for receiving an examination subject. The lower part of the coil arrangement is disposed below a field of view of the magnetic resonance tomography system. The lower part of the coil arrangement is closer to the examination subject than the upper part of the coil arrangement.

    摘要翻译： 本实施例涉及具有线圈系统的磁共振断层摄影系统。 线圈系统包括具有至少一个天线的上部和具有至少一个天线的下部。 线圈装置的上部设置在用于接收检查对象的孔的上方。 线圈装置的下部设置在磁共振断层摄影系统的视场的下方。 线圈装置的下部比线圈装置的上部更靠近检查对象。

    System and Methods for Providing Magnetic Resonance Imaging Data for an Image Reconstruction
    118.
    发明申请
    System and Methods for Providing Magnetic Resonance Imaging Data for an Image Reconstruction 有权
    提供图像重构的磁共振成像数据的系统和方法

    公开(公告)号：US20140266190A1

    公开(公告)日：2014-09-18

    申请号：US14204007

    申请日：2014-03-11

    申请人： Jan Bollenbeck ,  Jörg Hüttner ,  Klaus Pistor ,  Stefan Schwarzer ,  Markus Vester

    发明人： Jan Bollenbeck ,  Jörg Hüttner ,  Klaus Pistor ,  Stefan Schwarzer ,  Markus Vester

    IPC分类号： G01R33/56

    CPC分类号： G01R33/56 ,  G01R33/3692

    摘要： The embodiments relate to an image reconstruction to be carried out on a base unit of a MRI system, where data is formed by reception signals obtained by a local coil unit. Provisions are made for an alternating magnetic field, modulated in accordance with a reference clock, the alternating magnetic field to be used by the local coil unit for obtaining electric energy for supplying local electronics of the local coil unit and the reference clock to be retrieved from the received alternating magnetic field by the local electronics, a radio signal containing MRI information representing the reception signals and clock information representing the retrieved reference clock to be produced by the local electronics and transmitted to the base unit, and the received radio signal to be processed by the base unit such that the data and the clock information are retrieved therefrom and provided for the image reconstruction.

    摘要翻译： 实施例涉及要在MRI系统的基本单元上执行的图像重建，其中数据由通过局部线圈单元获得的接收信号形成。 对于根据参考时钟调制的交变磁场的规定，由局部线圈单元使用的用于获得用于提供局部线圈单元的本地电子器件的电能的交变磁场和将从 由本地电子设备接收的交变磁场，包含表示接收信号的MRI信息的无线电信号和表示由本地电子设备发送并发送到基本单元的检索到的参考时钟的时钟信息，以及所接收的待处理的无线电信号 通过基本单元使得数据和时钟信息从其中检索并提供给图像重建。

    Antenna arrangement for magnetic resonance applications
    119.
    发明授权
    Antenna arrangement for magnetic resonance applications 有权
    用于磁共振应用的天线布置

    公开(公告)号：US08664956B2

    公开(公告)日：2014-03-04

    申请号：US13183078

    申请日：2011-07-14

    申请人： Stephan Biber ,  Jürgen Nistler ,  Markus Vester

    发明人： Stephan Biber ,  Jürgen Nistler ,  Markus Vester

    IPC分类号： G01V3/00

    CPC分类号： G01R33/34076

    摘要： An antenna arrangement for magnetic resonance applications includes antenna elements substantially parallel to a common central axis, distributed around the central axis at a distance from the central axis, and enclosing an essentially cylindrical volume. The antenna arrangement includes intermediate connections that connect to immediately adjacent antenna elements at connection points that lie between the ends of the antenna elements. A preamplifier connects to each of the intermediate connections and has an output that, in a receive mode, corresponds to a respective feed-out point. In send mode, the antenna arrangement injects radio-frequency signals into the antenna elements using the injection points. The antenna arrangement is also configured to adjust the intermediate connections to a higher resistance when the antenna arrangement is in the send mode and at least some of the intermediate connections to a lower resistance when the antenna arrangement is in the receive mode.

    摘要翻译： 用于磁共振应用的天线装置包括基本上平行于公共中心轴线的天线元件，围绕中心轴线分布在与中心轴线一定距离处，并且包围基本上圆柱形的体积。 天线装置包括在位于天线元件的端部之间的连接点处连接到紧邻的天线元件的中间连接。 前置放大器连接到每个中间连接，并且具有在接收模式下对应于相应的馈送点的输出。 在发送模式下，天线装置使用注入点将射频信号注入到天线元件中。 天线装置还被配置为当天线装置处于发送模式时将中间连接调节到更高的电阻，并且当天线装置处于接收模式时，天线装置中的至少一些中间连接到较低电阻。

    Determination of Communication Latency in Magnetic Resonance Tomography Systems
    120.
    发明申请
    Determination of Communication Latency in Magnetic Resonance Tomography Systems 有权
    磁共振成像系统中通信延迟的确定

    公开(公告)号：US20130342199A1

    公开(公告)日：2013-12-26

    申请号：US13924861

    申请日：2013-06-24

    申请人： Jan Bollenbeck ,  Stefan Schwarzer ,  Markus Vester

    发明人： Jan Bollenbeck ,  Stefan Schwarzer ,  Markus Vester

    IPC分类号： G01R33/36

    CPC分类号： G01R33/3692

    摘要： A method for determining communication latency in a magnetic resonance tomography system includes emitting a high-frequency pulse at a first timepoint, receiving the high-frequency pulse by a local coil arrangement of the magnetic resonance tomography system, and transmitting a return signal from the local coil arrangement to a receiving unit. The method also includes receiving the return signal by the receiving unit at a second timepoint, and evaluating a time difference between the first timepoint and the second timepoint in order to determine the communication latency.

    摘要翻译： 用于确定磁共振断层摄影系统中的通信等待时间的方法包括在第一时间点发射高频脉冲，通过磁共振断层摄影系统的局部线圈布置接收高频脉冲，以及从本地发送返回信号 线圈布置到接收单元。 该方法还包括在第二时刻由接收单元接收返回信号，以及评估第一时间点和第二时间点之间的时间差，以便确定通信等待时间。