CT scanner and detector therefor
    10.
    发明授权
    CT scanner and detector therefor 失效
    CT扫描仪及其检测仪

    公开(公告)号:US4769829A

    公开(公告)日:1988-09-06

    申请号:US826944

    申请日:1986-02-07

    摘要: A CT scanner comprises a rotatable gantry 1 carrying an X-ray source 3 which provides a fan-shaped beam of X-rays and an X-ray detector 10 which scans the X-ray intensity along a line in the plain of the beam. The gantry is rotatable about an axis A relative to a couch 2 which supports the patient under investigation. The X-ray detector 10 comprises two concentric X-ray masks exposed around a scintillator tube; the two masks having helical X-ray transmissive apertures, the helices being of opposed orientation so that rotation of the masks in opposite directions causes the exposed area of the scintillator tube to move along its length.

    摘要翻译: CT扫描器包括:可旋转机架1,其携带提供X射线扇形光束的X射线源3;以及X射线检测器10,其沿着光束平面中的线扫描X射线强度。 台架可相对于支撑被调查患者的沙发2绕轴线A旋转。 X射线检测器10包括在闪烁体管周围暴露的两个同心的X射线掩模; 两个掩模具有螺旋X射线透射孔,螺旋具有相对的取向,使得掩模在相反方向上的旋转导致闪烁体管的暴露区域沿其长度移动。