System and method for utilizing X-ray detector having pixel with multiple charge-storage devices

    公开(公告)号:US09749558B2

    公开(公告)日:2017-08-29

    申请号:US14741739

    申请日:2015-06-17

    Abstract: A digital X-ray imaging system is provided. The digital X-ray imaging system includes an X-ray source and a digital X-ray detector. The digital X-ray detector includes a scintillator configured to absorb radiation emitted from the X-ray source and to emit optical photons in response to the absorbed radiation. The digital X-ray detector also includes multiple pixels, each pixel including a pinned photodiode and at least two charge-storage capacitors coupled to the pinned photodiode, wherein each pixel is configured to absorb the optical photons emitted by the scintillator and each pinned photodiode is configured to generate a photocharge in response to the absorbed optical photons. The digital X-ray detector further includes control circuitry coupled to each pixel of the multiple pixels and configured to selectively control a respective flow of the photocharge generated by the pinned photodiode to a respective charge-storage capacitor of the at least two charge-storage capacitors during integration.

    X-RAY IMAGE PICKUP SYSTEM
    77.
    发明申请

    公开(公告)号:US20170139057A1

    公开(公告)日:2017-05-18

    申请号:US15322207

    申请日:2015-06-25

    Abstract: An X-ray image pickup system (10) includes an X-ray source (16), an image pickup panel (12), a scintillator (13), and an X-ray control unit (14E). The image pickup panel includes a photoelectric conversion element (26), a capacitor (50), a thin film transistor (24), and TFT control units (14A, 14B, 14F). To the photoelectric conversion element (26), scintillation light is projected. The capacitor (50) is connected to the photoelectric conversion element (26), and accumulates charges. The thin film transistor (24) is connected to the capacitor (50). The TFT control units (14A, 14B, 14F) control an operation of the thin film transistor (24). The thin film transistor (24) includes a semiconductor active layer (32) made of an oxide semiconductor. The X-ray control unit (14E) intermittently projects X-ray to the X-ray source (16). The TFT control units (14A, 14B, 14F) cause the thin film transistor (24) to operate when the X-ray is not projected, so as to read out the charges accumulated in the capacitor (50).

    Pixelated gamma detector
    78.
    发明授权
    Pixelated gamma detector 有权
    像素伽玛检测器

    公开(公告)号:US09529097B1

    公开(公告)日:2016-12-27

    申请号:US15198502

    申请日:2016-06-30

    Abstract: A pixelated gamma detector includes a scintillator column assembly having scintillator crystals and optical transparent elements alternating along a longitudinal axis, a collimator assembly having longitudinal walls separated by collimator septum, the collimator septum spaced apart to form collimator channels, the scintillator column assembly positioned adjacent to the collimator assembly so that the respective ones of the scintillator crystal are positioned adjacent to respective ones of the collimator channels, the respective ones of the optical transparent element are positioned adjacent to respective ones of the collimator septum, and a first photosensor and a second photosensor, the first and the second photosensor each connected to an opposing end of the scintillator column assembly. A system and a method for inspecting and/or detecting defects in an interior of an object are also disclosed.

    Abstract translation: 像素化伽马检测器包括具有闪烁体晶体和沿着纵向轴线交替的光学透明元件的闪烁体列组件,具有由准直器隔膜分隔的纵向壁的准直器组件,间隔开的准直器隔膜以形成准直器通道,闪烁体柱组件邻近 所述准直器组件使得所述闪烁体晶体中的各个位于邻近所述准直器通道中的相应准直器通道的位置,所述光学透明元件中的相应光学透镜元件与相应的准直器隔膜相邻定位,以及第一光电传感器和第二光电传感器 ,第一和第二光传感器各自连接到闪烁体列组件的相对端。 还公开了用于检查和/或检测物体内部的缺陷的系统和方法。

    X-RAY CT APPARATUS AND X-RAY DETECTOR
    79.
    发明申请
    X-RAY CT APPARATUS AND X-RAY DETECTOR 审中-公开
    X射线CT装置和X射线探测器

    公开(公告)号:US20160054454A1

    公开(公告)日:2016-02-25

    申请号:US14831086

    申请日:2015-08-20

    Abstract: An X-ray computer tomography (CT) apparatus according to an embodiment includes an X-ray source, an X-ray detector, and generating circuitry. The X-ray source radiates X-rays. The X-ray detector includes a scintillator including a first region close to the X-ray source and a second region distant from the X-ray source, an optical sensor that detects scintillator light obtained by converting the X-rays radiated from the X-ray source with the scintillator, and a variable layer that is provided in the scintillator and switchable between a first state in which the variable layer transmits the scintillator light between the first region and the second region and a second state in which the variable layer does not transmit the scintillator light between the first region and the second region. The generating circuitry generates a CT image based on a signal output from the X-ray detector.

    Abstract translation: 根据实施例的X射线计算机断层摄影(CT)装置包括X射线源,X射线检测器和发生电路。 X射线源辐射X射线。 X射线检测器包括闪烁体,其包括靠近X射线源的第一区域和远离X射线源的第二区域;光学传感器,其检测通过将从X射线源辐射的X射线转换得到的闪烁体光, 以及设置在所述闪烁器中的可变层,并且在所述可变层透射所述第一区域和所述第二区域之间的所述闪烁体光的第一状态和所述可变层不在所述第二状态之间切换的可变层 在第一区域和第二区域之间传输闪烁体光。 生成电路基于从X射线检测器输出的信号生成CT图像。

    RADIATION IMAGE ACQUISITION SYSTEM
    80.
    发明申请
    RADIATION IMAGE ACQUISITION SYSTEM 有权
    辐射图像采集系统

    公开(公告)号:US20150185165A1

    公开(公告)日:2015-07-02

    申请号:US14415273

    申请日:2013-06-18

    Abstract: A radiation image acquisition system of an aspect of the present invention includes a radiation source emitting radiation toward an object, a holding unit holding the object, a wavelength conversion member generating scintillation light in response to incidence of the radiation emitted from the radiation source and transmitted through the object, a first imaging means condensing and imaging scintillation light emitted from an incidence surface of the radiation of the wavelength conversion member, a second imaging means condensing and imaging scintillation light emitted from a surface opposite to the incidence surface of the wavelength conversion member, a holding unit position adjusting means adjusting the position of the holding unit between the radiation source and the wavelength conversion member, and an imaging position adjusting means adjusting the position of the first imaging means.

    Abstract translation: 本发明的一个方面的放射线图像采集系统包括:朝向物体发射辐射的辐射源,保持物体的保持单元,响应于从辐射源发射的辐射的入射产生闪烁光的波长转换部件, 通过该目的,第一成像装置冷凝并成像从波长转换部件的辐射的入射表面发射的闪烁光,第二成像装置,将从与波长转换部件的入射面相反的表面发射的闪烁光成像, 调节所述保持单元在所述辐射源与所述波长转换构件之间的位置的保持单元位置调整装置,以及调整所述第一成像装置的位置的成像位置调节装置。

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