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    • 4. 发明授权
    • X-ray CT apparatus and X-ray detector
    • X射线CT装置和X射线检测器
    • US08976924B2
    • 2015-03-10
    • US13089892
    • 2011-04-19
    • Yoshiaki YaoiSeiichiro MuraiAkihiko Taniguchi
    • Yoshiaki YaoiSeiichiro MuraiAkihiko Taniguchi
    • A61B6/03A61B6/00G01T1/164
    • A61B6/032A61B6/4291G01T1/1644
    • An X-ray detector of an X-ray CT apparatus has a collimator, a plurality of scintillators, a light reflector and a plurality of photodiodes. The collimator has a threshold plate with a thickness Wc to eliminate scattered radiation from an X-ray. The plurality of scintillators emit light based on the X-ray. The light reflector is provided in a gap between adjacent scintillators of the plurality of scintillators. The plurality of photodiodes convert the light of each of the plurality of scintillators into the electric signal. The thickness Wc of the threshold plate mounted on the X-ray incident side of the adjacent scintillators, and a thickness Ws of the gap has a relationship shown in a following expression: Wc≧Ws.
    • X射线CT装置的X射线检测器具有准直仪,多个闪烁体,光反射体和多个光电二极管。 准直器具有厚度为Wc的阈板,以消除来自X射线的散射辐射。 多个闪烁体基于X射线发光。 光反射器设置在多个闪烁体的相邻闪烁体之间的间隙中。 多个光电二极管将多个闪烁器中的每一个的光转换成电信号。 安装在相邻的闪烁体的X射线入射侧的阈板的厚度Wc和间隙的厚度Ws具有以下关系式:Wc≥Ws。