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15 条记录 (耗时 0.015 秒)

    Local-coil apparatus for a magnetic resonance tomography unit and systems and methods thereof
    2.
    发明授权
    Local-coil apparatus for a magnetic resonance tomography unit and systems and methods thereof 有权

    公开(公告)号：US11519984B2

    公开(公告)日：2022-12-06

    申请号：US17386251

    申请日：2021-07-27

    申请人： Siemens Healthcare GmbH

    发明人： Jan Bollenbeck

    IPC分类号： G01R33/36

    摘要： The disclosure relates to a method, a computer program, a data storage medium, a system, and a local-coil apparatus for a magnetic resonance tomography MRT unit having at least one receive coil configured to receive an MRT signal and a receive amplifier apparatus having at least one output amplifier unit and configured to amplify the received MRT signal in order to drive an analog-to-digital converter ADC. The at least one output amplifier unit is configured to amplify the MRT signal, below a signal-level threshold value, by a high gain, and, above the signal-level threshold value, by a low gain. The receive amplifier apparatus is configured to change a bias current of the at least one output amplifier unit according to a defined MRT signal level.

    RECEIVING DEVICE FOR FREQUENCY-MULTIPLEXED SIGNALS
    3.
    发明申请
    RECEIVING DEVICE FOR FREQUENCY-MULTIPLEXED SIGNALS 审中-公开

    公开(公告)号：US20200025848A1

    公开(公告)日：2020-01-23

    申请号：US16516179

    申请日：2019-07-18

    申请人： Siemens Healthcare GmbH

    发明人： Jan Bollenbeck

    IPC分类号： G01R33/36 ,  G01R33/3415

    摘要： A receiving device for two signals having different center frequencies. The receiving device includes a sampler. A first signal of the two signals and a second signal of the two signals are supplied to a first signal-input of the sampler in a time multiplex. The sampler digitizes the first signal and the second signal at a sampling rate. The receiving device also includes a frequency mirroring device that mirrors the second digital signal in a frequency domain about a quarter of the sampling rate.

    COIL INTERFACE APPARATUS, COIL APPARATUS AND MRI DEVICE
    7.
    发明公开
    COIL INTERFACE APPARATUS, COIL APPARATUS AND MRI DEVICE 审中-公开

    公开(公告)号：US20230349990A1

    公开(公告)日：2023-11-02

    申请号：US18308047

    申请日：2023-04-27

    申请人： Siemens Healthcare GmbH

    发明人： Tong Tong ,  Qiu Yi Zhang ,  Jan Bollenbeck

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

    CPC分类号： G01R33/36 ,  G01R33/34084 ,  A61B5/055

    摘要： A coil interface apparatus may include: a plug, for connection to a coil apparatus for receiving a magnetic resonance signal via a test subject in the MRI device. The plug may include a first power coupler and at least one first signal coupler. The apparatus may include a socket, for connection to a main body of the MRI device. The socket may include a second power coupler and at least one second signal coupler. The at least one first signal coupler may send a magnetic resonance signal received from the coil apparatus to the at least one second signal coupler by induction. The at least one second signal coupler may receive the sent magnetic resonance signal by induction. The second power coupler may send a power signal to the first power coupler by induction, and the first power coupler may receive the sent power signal.

    Local coil with frequency converter
    8.
    发明授权
    Local coil with frequency converter 有权

    公开(公告)号：US10605876B2

    公开(公告)日：2020-03-31

    申请号：US15997109

    申请日：2018-06-04

    申请人： Siemens Healthcare GmbH

    发明人： Jan Bollenbeck ,  Ralph Oppelt ,  Robert Rehner ,  Markus Vester

    IPC分类号： G01R33/36 ,  G01R33/34 ,  H03B21/01

    摘要： The disclosure relates to a local coil with a device for providing a first mixed frequency signal and a second mixed frequency signal by a first auxiliary frequency signal and a second auxiliary frequency signal. The device has an auxiliary mixer configured to generate the second mixed frequency signal from the first auxiliary frequency signal and the second auxiliary frequency signal. The local coil has a signal input including a first signal connection to the device. The local coil is configured to jointly receive the first auxiliary frequency signal and the second auxiliary frequency signal by way of the signal input and supply them to the device by way of the first signal connection.

    Position Detection Apparatus for Wireless Squeeze Ball, System, and MRI System
    10.
    发明公开
    Position Detection Apparatus for Wireless Squeeze Ball, System, and MRI System 审中-公开

    公开(公告)号：US20240065642A1

    公开(公告)日：2024-02-29

    申请号：US18240379

    申请日：2023-08-31

    申请人： Siemens Healthcare GmbH

    发明人： Hong Cheng ,  JianMin Wang ,  Jan Bollenbeck

    IPC分类号： A61B5/00 ,  A61B5/055

    CPC分类号： A61B5/747 ,  A61B5/055 ,  A61B5/7475

    摘要： A position detection apparatus including: an electromagnetic induction module configured to send to a mode triggering module an induced voltage signal generated due to a change in a magnetic field; a mode triggering module configured to output a preset trigger signal based on the induced voltage signal, the trigger signal corresponding to the induced voltage signal; and a signal generating module configured to generate an analog signal of a first mode corresponding to the induced voltage signal based on the received trigger signal, and send the analog signal of the first mode to an MR receiving module of an MRI system via an antenna module, so that: the MR receiving module judges whether the wireless squeeze ball has entered the interior of a body coil from outside a tubular body of the MRI system, based on the analog signal of the first mode.