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53 条记录 (耗时 0.013 秒)

    Control device for an x-ray tube and method for operating an x-ray tube
    1.
    发明授权
    Control device for an x-ray tube and method for operating an x-ray tube 有权

    公开(公告)号：US11558950B2

    公开(公告)日：2023-01-17

    申请号：US16643526

    申请日：2018-08-31

    申请人： Cetteen GmbH

    发明人： Stefan Fritz ,  Houman Jafari ,  Jörg Rehrmann

    IPC分类号： H05G1/04 ,  H05G1/34 ,  H05G1/22 ,  H05G1/70 ,  H05G1/20

    摘要： The invention relates to a control device for an X-ray tube (2), comprising a housing (29) that is designed as a shield, in which an anode current regulating unit (1) is arranged and which is connected to a cathode power supply unit (18), a plurality of cathode voltage switches (20, 21, 22, 23, 24) which are to be connected to in each case a cathode (4), and a programmable assembly (25), in which the control of the cathodes (4) is determined. The cathode power supply unit (18), the cathode voltage switches (20, 21, 22, 23, 24) and the programmable assembly (18) are also arranged in the housing (29).

    Grid control system for eliminating soft radiation emissions from an X-ray tube
    4.
    发明授权
    Grid control system for eliminating soft radiation emissions from an X-ray tube 有权
    用于消除来自X射线管的软辐射发射的电网控制系统

    公开(公告)号：US07916837B2

    公开(公告)日：2011-03-29

    申请号：US12803196

    申请日：2010-06-21

    申请人： Roman Krzystyniak ,  Pavel Dolgonos

    发明人： Roman Krzystyniak ,  Pavel Dolgonos

    IPC分类号： H05G1/22 ,  H05G1/10

    CPC分类号： H05G1/20

    摘要： A system and method for controlling the radiation emissions from an x-ray tube having an anode, a cathode, and a grid is disclosed. The system and method uses a continuous high voltage across the cathode and the anode of the x-ray tube, so that a high voltage is continuously applied to the x-ray tube between the cathode and the anode. The flow of electrons between the cathode and the anode is then controlled by a pulsed high voltage to the grid, the pulsed high voltage being of substantially the same magnitude as the continuous high voltage and being switched at a frequency of about one microsecond to provide alternate the polarity of the switched high voltage to the grid, so that voltage between the cathode and the anode is switched by the voltage applied to the grid by the source of pulsed high voltage, so that soft radiation emissions from the x-ray tube are minimized or eliminated.

    摘要翻译： 公开了一种用于控制具有阳极，阴极和电网的X射线管的辐射发射的系统和方法。 该系统和方法使用X射线管的阴极和阳极两端的连续高电压，从而在阴极和阳极之间的x射线管上连续地施加高电压。 阴极和阳极之间的电子流然后通过脉冲高压到电网来控制，脉冲高电压与连续高电压基本上相同的大小，并且以大约1微秒的频率被切换以提供交替的 开关高电压到电网的极性，使得阴极和阳极之间的电压通过脉冲高电压源施加到电网的电压来切换，使得来自X射线管的软辐射发射最小化 或消除。

    Power supply for triode x-ray tubes
    5.
    发明授权
    Power supply for triode x-ray tubes 失效
    三极管X射线管的电源

    公开(公告)号：US4378501A

    公开(公告)日：1983-03-29

    申请号：US222287

    申请日：1981-01-05

    申请人： David Cowell

    发明人： David Cowell

    IPC分类号： H05G1/12 ,  H05G1/22 ,  H05G1/32 ,  H05G1/30

    CPC分类号： H05G1/12 ,  H05G1/22 ,  H05G1/32

    摘要： A power supply provides high voltage for a grid controlled x-ray tube. In the supply an oscillator generates a high frequency signal which is amplified and transformed to kilovoltage. A voltage multiplier increases the kilovoltage to a potential suitable for the tube. The voltage multiplier includes a bank of series capacitors which tends to maintain a constant high voltage when the tube is not conducting.

    摘要翻译： 电源为电网控制的X射线管提供高电压。 在供电中，振荡器产生被放大并转换为千伏的高频信号。 电压倍增器将千伏增加到适合管的电位。 电压倍增器包括一组串联的电容器，当管不导通时，它们趋于保持恒定的高电压。

    Image acquisition optimization
    8.
    发明授权
    Image acquisition optimization 有权

    公开(公告)号：US10722193B2

    公开(公告)日：2020-07-28

    申请号：US16416957

    申请日：2019-05-20

    申请人： Medtronic Navigation, Inc.

    发明人： Jigney Shah

    IPC分类号： H05G1/22 ,  A61B6/00

    摘要： A system and a method for acquiring image data of a subject with an imaging system is provided. The system can include a gantry that completely annularly encompasses at least a portion of the subject, with a source positioned within and movable relative to the gantry. The source can be responsive to a signal to output at least one pulse. The system can include a detector positioned within and movable relative to the gantry to detect the pulse emitted by the source. The system can also include a detector control module that sets detector data based on the detected pulse, and an image acquisition control module that sets the signal for the source and receives the detector data. The image acquisition control module can reconstruct image data based on the detector data. The signal can include a signal for the source to output a single pulse or two pulses.

    Image acquisition optimization
    9.
    发明授权
    Image acquisition optimization 有权

    公开(公告)号：US10292667B2

    公开(公告)日：2019-05-21

    申请号：US14286717

    申请日：2014-05-23

    申请人： Medtronic Navigation, Inc.

    发明人： Jigney Shah

    IPC分类号： A61B6/00 ,  H05G1/22 ,  G21K1/00

    摘要： A system and a method for acquiring image data of a subject with an imaging system is provided. The system can include a gantry that completely annularly encompasses at least a portion of the subject, with a source positioned within and movable relative to the gantry. The source can be responsive to a signal to output at least one pulse. The system can include a detector positioned within and movable relative to the gantry to detect the pulse emitted by the source. The system can also include a detector control module that sets detector data based on the detected pulse, and an image acquisition control module that sets the signal for the source and receives the detector data. The image acquisition control module can reconstruct image data based on the detector data. The signal can include a signal for the source to output a single pulse or two pulses.

    X-ray detector with improved quantum efficiency
    10.
    发明授权
    X-ray detector with improved quantum efficiency 有权
    具有提高量子效率的X射线探测器

    公开(公告)号：US08558180B2

    公开(公告)日：2013-10-15

    申请号：US12874408

    申请日：2010-09-02

    申请人： Ruvin Deych ,  Charles Shaughnessy

    发明人： Ruvin Deych ,  Charles Shaughnessy

    IPC分类号： G01T1/20 ,  G01T1/24 ,  G01T1/26 ,  H05G1/64 ,  H05G1/22

    CPC分类号： G01T1/17 ,  G01T7/005

    摘要： Among other things, one or more systems and/or techniques for integrating electrical charge yielded from an indirect conversion detector array of a pulsating radiation system are provided. The integration begins during a resting period between a first and second pulse and ends before the second pulse is emitted. Electrical charge that is measured during a resting period is integrated, while electrical charge measured during a pulse is not integrated. In this way, parasitic contributions caused by the direct interaction of radiation photons with a photodiode are reduced and a quantum efficiency of the indirect conversion detector array is increased, for example. Moreover, the period of integration can be adjusted such that a voltage gain related to the indirect conversion detector array can be varied to a predetermined level.

    摘要翻译： 提供了一种或多种用于积分从脉动辐射系统的间接转换检测器阵列产生的电荷的系统和/或技术。 积分在第一和第二脉冲之间的静止期间开始，并且在第二脉冲发射之前结束。 在静止期间测量的电荷被积分，而在脉冲期间测量的电荷未被积分。 以这种方式，减少了由辐射光子与光电二极管的直接相互作用引起的寄生贡献，并且例如间接转换检测器阵列的量子效率增加。 此外，可以调节积分周期，使得与间接转换检测器阵列相关的电压增益可以变化到预定水平。