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    • 66. 发明授权
    • Method for detecting light emitted by two surfaces of a stimulable
phosphor sheet
    • 用于检测可刺激的磷光体片的两个表面发射的光的方法
    • US5483081A
    • 1996-01-09
    • US137759
    • 1993-10-19
    • Yuichi Hosoi
    • Yuichi Hosoi
    • G01N23/04G01T1/29G21K4/00
    • G01T1/2014G01N23/04G01T1/2012G21K4/00G21K2004/04
    • A stimulable phosphor sheet comprises a stimulable phosphor layer, and a colored layer, which is located on one side of the stimulable phosphor layer and contains a coloring agent. The coloring agent is capable of selectively absorbing stimulating rays, The stimulable phosphor sheet is scanned with the stimulating rays from the side opposite to the colored layer. The light, which is emitted by the two surfaces of the stimulable phosphor sheet during its scanning with the stimulating rays, is photoelectrically detected from the two surfaces of the stimulable phosphor sheet, and an image signal representing the radiation image is thereby obtained. The sharpness of an image reproduced from the image signal is thereby efficiently kept high. A second embodiment provides an optical layer on a stimulable phosphor sheet, wherein the optical layer transmits only light which is incident from a direction substantially normal to the surface of the stimulable phosphor sheet. The optical layer prevents the rays which are irradiated from a side of the phosphor sheet having the optical layer from being reabsorbed by the phosphor sheet after reflecting from a photodetector which is located on the same side of the phosphor sheet as the optical layer and which detects light emitted from the phosphor sheet in response to stimulating rays.
    • 可刺激的荧光体片材包括可刺激的荧光体层和着色层,其位于可刺激的磷光体层的一侧并且包含着色剂。 着色剂能够选择性地吸收刺激的光线。可刺激的荧光体片材是用与彩色层相反一侧的刺激光线扫描的。 在可刺激的荧光体片的扫描期间,由可刺激的荧光体片的两个表面发射的光被从可刺激的荧光粉片的两个表面光电检测,从而获得表示辐射图像的图像信号。 因此,从图像信号再现的图像的清晰度被有效地保持为高。 第二实施例在可刺激的荧光体片上提供光学层,其中光学层仅透射从基本上垂直于可刺激的荧光体片的表面的方向入射的光。 光学层防止从具有光学层的荧光体片的一侧照射的光线被从与光学层位于荧光体片的同一侧的光电检测器反射之后被荧光体片重新吸收,并且检测 响应于刺激光线从荧光体片发射的光。
    • 69. 发明授权
    • Radiation image recording and read-out apparatus
    • 辐射图像记录和读出装置
    • US4835386A
    • 1989-05-30
    • US919689
    • 1986-10-16
    • Kazuo ShimuraNobufumi MoriShigeru SaotomeRyoichi YoshimuraHideo WatanabeYuichi Hosoi
    • Kazuo ShimuraNobufumi MoriShigeru SaotomeRyoichi YoshimuraHideo WatanabeYuichi Hosoi
    • G01T1/29G03B42/02
    • G03B42/02G01T1/2012
    • A radiation image recording and read-out apparatus comprises a case housing a stimulable phosphor sheet and having an opening, a light shielding cover housed in the case for projection therefrom through the opening, a recording section for exposing the stimulable phosphor sheet disposed at an exposure position in the light shielding cover projected out of the case to radiation, and a read-out section having a sub-scanning system for moving the stimulable phosphor sheet between the exposure position and a position in the case. Or, the apparatus comprises a case having an opening for passing the stimulable phosphor sheet therethrough, a recording section for exposing the stimulable phosphor sheet disposed at the exposure position in the case to radiation, and a read-out section having a sub-scanning system for moving the stimulable phosphor sheet between the exposure position and a position projected out of the case. Alternatively, the apparatus comprises a sheet feed system for reciprocating a strip-like flexible stimulable phosphor sheet between first and second wind-up shafts, and a recording section for exposing the stimulable phosphor sheet disposed between the first and second wind-up shafts to radiation.
    • 放射线图像记录和读出装置包括容纳可刺激的荧光体片并具有开口的壳体,容纳在壳体中的遮光盖,用于通过该开口从其突出;记录部分,用于暴露以曝光设置的可激发荧光粉片 并且具有副扫描系统的读出部,该辅助扫描系统用于在曝光位置和外壳中的位置之间移动可刺激的荧光体片。 或者,该装置包括具有用于使可刺激的荧光体片通过的开口的壳体,用于将设置在外壳中的曝光位置处的可刺激的荧光体片曝光的记录部分,以及具有副扫描系统的读出部分 用于将可刺激的荧光体片材在曝光位置和从外壳伸出的位置之间移动。 或者,该装置包括用于使第一和第二卷绕轴之间的条状柔性可刺激磷光体片往复运动的片材进给系统和用于将设置在第一和第二卷绕轴之间的可刺激磷光体片暴露于辐射的记录部分 。