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    • 53. 发明授权
    • X-ray imaging apparatus capable of eliminating unwanted X-ray image
signal components
    • 能够消除不想要的X射线图像信号分量的X射线成像装置
    • US5583905A
    • 1996-12-10
    • US195054
    • 1994-02-14
    • Masayuki NishikiYoshio Taniguchi
    • Masayuki NishikiYoshio Taniguchi
    • A61B6/00H04N5/32H05G1/60H05G1/70H05G1/64
    • H04N5/32H05G1/60H05G1/70
    • In an X-ray imaging apparatus, unwanted electron charges caused by pulsatory X-ray trailing edges are eliminated from an X-ray image signal of a biological body under medical examination. The X-ray imaging apparatus comprises: an X-ray generator for generating a plurality of pulsatory X-ray beams; an X-ray controlling unit for supplying an X-ray projection controlling signal to the X-ray generator in order to project an X-ray pulse beam having a predetermined pulse width to a biological body under medical examination from the X-ray generator, thereby producing an X-ray image of the biological body under medical examination; an optical converter for converting the X-ray image into a corresponding optical X-ray image signal of the biological body under medical examination; an imaging unit for imaging the optical X-ray image signal derived from the optical converter to store the imaged optical X-ray image signal as electron charges therein; a driving unit for driving the imaging unit in such a manner that only electron charges produced while projecting the X-ray pulse having the predetermined pulse width to the biological body in response to the X-ray projection controlling signal, are read out as an effective X-ray image signal of the biological body under medical examination; and, a display unit for displaying thereon an effective X-ray image of the biological body under medical examination in response to the effective X-ray image signal.
    • 在X射线成像装置中,从体检的生物体的X射线图像信号中消除由脉动X射线后缘引起的不希望的电子电荷。 X射线成像装置包括:X射线发生器,用于产生多个脉动X射线束; X射线控制单元,用于向X射线发生器提供X射线投射控制信号,以便将从具有预定脉冲宽度的X射线脉冲束投射到体格检查的生物体上, 从而在体格检查下产生生物体的X射线图像; 光学转换器,用于在体格检查下将X射线图像转换成生物体的对应的光学X射线图像信号; 成像单元,用于对从光转换器获得的光学X射线图像信号进行成像,以将成像的光学X射线图像信号作为电子电荷存储; 驱动单元,用于以这样一种方式驱动摄像单元,以便仅当将具有预定脉冲宽度的X射线脉冲投射到生物体上时产生的电子电荷作为响应于X射线投影控制信号而被产生,作为有效的 身体检查下生物体的X射线图像信号; 以及显示单元,用于响应于有效X射线图像信号,在体格检查下显示生物体的有效X射线图像。