DYNAMIC BEAM APERATURE CONTROL TO REDUCE RADIATION DOSE USING COLLIMATOR
    5.
    发明申请
    DYNAMIC BEAM APERATURE CONTROL TO REDUCE RADIATION DOSE USING COLLIMATOR 有权
    动态光束控制,减少辐射剂量使用COLLIMATOR

    公开(公告)号:US20140086380A1

    公开(公告)日:2014-03-27

    申请号:US14023346

    申请日:2013-09-10

    IPC分类号: G21K1/04 A61B6/10

    摘要: A computed tomography (CT) apparatus including: an X-ray source configured to direct X-rays toward a detector assembly; a dynamic beam collimator fixed in space and configured to dynamically limit an X-ray beam directed toward an object of interest, the dynamic beam collimator including a plurality of leaflets to block a cone beam of X-rays impinging upon the dynamic beam collimator, wherein a subset of the plurality of leaflets opens and closes to block or allow a portion of the cone beam of X-rays to reduce or increase a solid angle of the cone beam, wherein the cone beam of X-rays with the reduced solid angle is directed toward a predetermined portion of the object of interest; and the detector assembly configured to detect the directed cone beam of X-rays on a side opposite to the X-ray source.

    摘要翻译: 一种计算机断层摄影(CT)装置,包括:被配置为将X射线引向检测器组件的X射线源; 固定在空间中并被配置为动态地限制朝向感兴趣物体的X射线束的动态束准直器,所述动态束准直器包括多个传单,以阻挡撞击在所述动态射束准直仪上的X射线的锥形束,其中 多个小叶的一个子集打开和关闭以阻挡或允许X射线的锥形束的一部分减小或增加锥形束的立体角,其中具有减小的立体角的X射线的锥形束是 指向感兴趣对象的预定部分; 并且所述检测器组件被配置为检测与所述X射线源相对的一侧上的X射线的定向锥形束。