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    • 9. 发明授权
    • Information reading apparatus for radiation image
    • 辐射图像信息读取装置
    • US4806757A
    • 1989-02-21
    • US924735
    • 1986-10-30
    • Tsuyoshi KanoTetsuhiko TakahashiKenichi OkajimaKenji UmetaniSaburo AtakaHisatake YokouchiRyuichi Suzuki
    • Tsuyoshi KanoTetsuhiko TakahashiKenichi OkajimaKenji UmetaniSaburo AtakaHisatake YokouchiRyuichi Suzuki
    • C09K11/61G01T1/29G21K4/00G02B26/10
    • C09K11/616G01T1/2012G01T1/2014G21K4/00
    • When the laser-stimulable phosphor plate of an information reading apparatus for radiation image is constituted of CsI as the base and 0.0003 to 0.03% in atomic ratio of Na, the output signal of the information reading apparatus can be increased and the decay time thereof can be shortened. When output signals are produced by detecting fluorescence emitted from a fluoroscopic plate disposed in confrontation with the laser-stimulable phosphor plate, there is provided an information reading apparatus for radiation image having an improved S/N ratio and a high efficiency of taking in laser-stimulated luminescence. Further, instead of Na or together with Na, there may be added at least one element selected from the group consisting of Li, K, Rb, Cu, Au, Be, Mg, Ca, Sr, Ba, Zn, Cd, Hg, B, Al, Ga, In, Tl, Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Si, Ti, Zr, Ge, Sn, Pb, As, Sb, and Bi. In this case, the total content of these elements is set to be 0.00001 to 1% in atomic ratio.
    • 当用于放射线图像的信息读取装置的激光可刺激的磷光体板以CsI为基准,以Na原子比为0.0003〜0.03%时,信息读取装置的输出信号可以增加,其衰减时间可以 缩短。 当通过检测由与激光可激发的荧光体板对置设置的荧光检查板发出的荧光而产生输出信号时,提供了一种具有改善的S / N比和具有高激光吸收能力的高效率的放射线图像的信息读取装置, 刺激发光。 此外,代替Na或与Na一起,可以添加至少一种选自Li,K,Rb,Cu,Au,Be,Mg,Ca,Sr,Ba,Zn,Cd,Hg, B,Al,Ga,In,Tl,Sc,Y,La,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm,Yb,Lu,Si,Ti,Zr,Ge, Sn,Pb,As,Sb和Bi。 在这种情况下,这些元素的总含量以原子比设定为0.00001〜1%。