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    • 3. 发明申请
    • Local Coil
    • 局部线圈
    • US20140312902A1
    • 2014-10-23
    • US14249926
    • 2014-04-10
    • Jia Heng TanTong TongMarkus VesterJianMin Wang
    • Jia Heng TanTong TongMarkus VesterJianMin Wang
    • G01R33/36G01R33/34
    • G01R33/3657G01R33/341
    • A local coil for an MRI system includes a signal antenna to receive a magnetic resonance signal and a tuning/detuning circuit to subject the signal antenna part to switch control according to a control signal. The tuning/detuning circuit is connected to the signal antenna part. The tuning/detuning circuit includes a control signal interface, a resonant circuit and an AC/DC conversion circuit. The control signal interface receives the control signal. The resonant circuit includes a diode. The AC/DC conversion circuit converts an alternating current generated by an electromagnetic wave to a direct current. The AC/DC conversion circuit is connected in series with the diode. A small detuning control current may be used, and detuning control circuitry may be reduced.
    • 用于MRI系统的本地线圈包括用于接收磁共振信号的信号天线和用于使信号天线部分根据控制信号切换控制的调谐/失谐电路。 调谐/失谐电路连接到信号天线部分。 调谐/失谐电路包括控制信号接口,谐振电路和AC / DC转换电路。 控制信号接口接收控制信号。 谐振电路包括二极管。 AC / DC转换电路将由电磁波产生的交流电转换为直流电。 AC / DC转换电路与二极管串联。 可以使用小的失谐控制电流,并且可以减小失谐控制电路。