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16 条记录 (耗时 0.019 秒)

    Transmit Antenna Selector and Magnetic Resonance Imaging System
    1.
    发明申请
    Transmit Antenna Selector and Magnetic Resonance Imaging System 有权
    发射天线选择器和磁共振成像系统

    公开(公告)号：US20140191758A1

    公开(公告)日：2014-07-10

    申请号：US14151566

    申请日：2014-01-09

    申请人： Hong Cheng ,  Stefan Pott ,  JianMin Wang ,  Lan Wang

    发明人： Hong Cheng ,  Stefan Pott ,  JianMin Wang ,  Lan Wang

    IPC分类号： G01R33/36

    CPC分类号： G01R33/3664

    摘要： A transmit antenna selector includes a control circuit, a body coil signal output interface, a local coil signal output interface, a radio-frequency signal input interface, and a dummy load. The control circuit includes a plurality of diodes. The control circuit electrically connects, according to a control signal and via the plurality of diodes, the radio-frequency signal input interface with the body coil signal output interface, with the local coil signal output interface, or with the dummy load.

    摘要翻译： 发射天线选择器包括控制电路，体线信号输出接口，本地线圈信号输出接口，射频信号输入接口和虚拟负载。 控制电路包括多个二极管。 控制电路根据控制信号，通过多个二极管将与身体线圈信号输出接口的射频信号输入接口，本地线圈信号输出接口或虚拟负载电连接。

    Local coil and magnetic resonance imaging system
    3.
    发明授权
    Local coil and magnetic resonance imaging system 有权

    公开(公告)号：US09971002B2

    公开(公告)日：2018-05-15

    申请号：US14167995

    申请日：2014-01-29

    申请人： Wen Ming Li ,  Tong Tong ,  JianMin Wang

    发明人： Wen Ming Li ,  Tong Tong ,  JianMin Wang

    IPC分类号： G01R33/36 ,  G01R33/34

    CPC分类号： G01R33/3628 ,  G01R33/34084

    摘要： A local coil and a magnetic resonance imaging system are provided. The local coil includes an antenna part, an adjustment part and a transmission part. The antenna part includes a first capacitor connected in series for adjusting a frequency of the antenna part. The adjustment part includes a tuning/detuning diode and is connected in parallel to the first capacitor, and the tuning/detuning diode is used for adjusting tuning and detuning of the antenna part. The transmission part includes a radio-frequency transmission line that connects the antenna part and the adjustment part, and the transmission part provides a phase difference of an odd multiple of 180° between the antenna part and the tuning/detuning diode.

    Local Coil and Magnetic Resonance Imaging System
    4.
    发明申请
    Local Coil and Magnetic Resonance Imaging System 有权
    局部线圈和磁共振成像系统

    公开(公告)号：US20140210475A1

    公开(公告)日：2014-07-31

    申请号：US14167995

    申请日：2014-01-29

    申请人： Wen Ming Li ,  Tong Tong ,  JianMin Wang

    发明人： Wen Ming Li ,  Tong Tong ,  JianMin Wang

    IPC分类号： G01R33/36

    CPC分类号： G01R33/3628 ,  G01R33/34084

    摘要： A local coil and a magnetic resonance imaging system are provided. The local coil includes an antenna part, an adjustment part and a transmission part. The antenna part includes a first capacitor connected in series for adjusting a frequency of the antenna part. The adjustment part includes a tuning/detuning diode and is connected in parallel to the first capacitor, and the tuning/detuning diode is used for adjusting tuning and detuning of the antenna part. The transmission part includes a radio-frequency transmission line that connects the antenna part and the adjustment part, and the transmission part provides a phase difference of an odd multiple of 180° between the antenna part and the tuning/detuning diode.

    摘要翻译： 提供局部线圈和磁共振成像系统。 局部线圈包括天线部分，调整部分和传输部分。 天线部分包括串联连接的第一电容器，用于调整天线部分的频率。 调整部分包括调谐/失谐二极管并联并联到第一电容器，并且调谐/失谐二极管用于调整天线部分的调谐和失谐。 发送部包括连接天线部和调整部的射频传输线，发送部在天线部和调谐/失谐二极管之间提供180°的奇数倍的相位差。

    Decoupling inductor assembly, radio frequency receiving coil and magnetic resonance imaging apparatus
    5.
    发明授权
    Decoupling inductor assembly, radio frequency receiving coil and magnetic resonance imaging apparatus 有权

    公开(公告)号：US10395808B2

    公开(公告)日：2019-08-27

    申请号：US14813363

    申请日：2015-07-30

    申请人： Wen Ming Li ,  Tong Tong ,  JianMin Wang

    发明人： Wen Ming Li ,  Tong Tong ,  JianMin Wang

    IPC分类号： H01F7/20 ,  G01R33/36 ,  H01F5/00

    摘要： A decoupling inductor assembly, an RF receiving coil, and an MRI apparatus are provided. The decoupling inductor assembly includes a first inductor and a second inductor. The first inductor includes a first solenoid and a first port pair located at two ends of the first solenoid, and the second inductor includes a second solenoid and a second port pair located at two ends of the second solenoid. The first solenoid and the second solenoid are wound partially or completely overlapped. The first port pair includes at least one pair of first parallel connection interfaces, and the second port pair includes at least one pair of second parallel connection interfaces.

    Magnetic resonance imaging apparatus and local coil assembly and local coil thereof
    6.
    发明授权
    Magnetic resonance imaging apparatus and local coil assembly and local coil thereof 有权

    公开(公告)号：US10101419B2

    公开(公告)日：2018-10-16

    申请号：US14458823

    申请日：2014-08-13

    申请人： Wen Ming Li ,  Tong Tong ,  JianMin Wang

    发明人： Wen Ming Li ,  Tong Tong ,  JianMin Wang

    IPC分类号： G01R33/36 ,  G01R33/3415

    摘要： A local coil assembly for an MRI apparatus includes an RF channel setting unit, a basic coil having a first slot, and a first additional coil connected to the first slot. Each of the basic coil and the first additional coil includes one or more receiving channels. The RF channel setting unit is configured for setting a receiving channel of the basic coil and a receiving channel of the first additional coil. The basic coil is configured for receiving an RF signal according to a receiving channel set by the RF channel setting unit. The first additional coil is configured for receiving an RF signal according to a receiving channel set by the RF receiving channel setting unit. The present teachings are compatible with multiple coils, and support the combined use of multiple coils.

    Magnetic resonance imaging system and coil control device thereof
    7.
    发明授权
    Magnetic resonance imaging system and coil control device thereof 有权

    公开(公告)号：US09897670B2

    公开(公告)日：2018-02-20

    申请号：US14499920

    申请日：2014-09-29

    申请人： Yu Ye Liu ,  JianMin Wang

    发明人： Yu Ye Liu ,  JianMin Wang

    IPC分类号： G01V3/00 ,  G01R33/36

    CPC分类号： G01R33/3657

    摘要： A coil control device of a magnetic resonance imaging system includes a DC-DC switching converter and a controller. The DC-DC switching converter is configured for switching and converting a DC power supply to a DC current or a DC voltage. An input end of the DC-DC switching converter is connected in parallel to the DC power supply. The controller is configured to control the DC-DC switching converter to switch and provide the DC current or the DC voltage. In some embodiments of the coil control device described herein, two power supplies (e.g., +15 V and −32 V) may be reduced to one power supply (e.g., +15 V), thereby saving energy and foregoing a water-cooling system.

    Local Coil
    9.
    发明申请
    Local Coil 有权
    局部线圈

    公开(公告)号：US20140312902A1

    公开(公告)日：2014-10-23

    申请号：US14249926

    申请日：2014-04-10

    申请人： Jia Heng Tan ,  Tong Tong ,  Markus Vester ,  JianMin Wang

    发明人： Jia Heng Tan ,  Tong Tong ,  Markus Vester ,  JianMin Wang

    IPC分类号： G01R33/36 ,  G01R33/34

    CPC分类号： G01R33/3657 ,  G01R33/341

    摘要： 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.

    摘要翻译： 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。