Positron computed tomography scanner
    1.
    发明授权
    Positron computed tomography scanner 失效
    正电子计算机断层扫描仪

    公开(公告)号:US5291021A

    公开(公告)日:1994-03-01

    申请号:US906858

    申请日:1992-06-30

    摘要: A positron CT scanner includes a plurality of detectors arranged in a generally cylindrical multi-layers of rings, and slice septa for restricting visual fields of the detectors so that the visual fields intersect a set axis. An interval of the slice septa is substantially corresponds to a plural number of detector cells each of which can determine positions of .gamma. rays incident in the direction of the set axis. The slice septa are movable relatively to the detector cells in the direction of the set axis during a .gamma. ray counting operation.

    摘要翻译: 正电子CT扫描器包括布置在大致圆柱形的多层环中的多个检测器,以及用于限制检测器的视野的切片隔片,使得视野与设定轴相交。 切片隔片的间隔基本上对应于多个检测器单元,每个检测器单元可以确定沿设定轴线的方向入射的(伽马)射线的位置。 在(伽马)射线计数操作期间,切片隔片可相对于检测器单元在设定轴线的方向上移动。