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    • 18. 发明公开
    • THREE-DIMENSIONAL X-RAY CT CALIBRATION AND VERIFICATION APPARATUS AND METHOD
    • 三维X射线CT校准和验证设备和方法
    • EP3161459A1
    • 2017-05-03
    • EP15719068.7
    • 2015-04-10
    • Hexagon Metrology, Inc
    • SINGH, Gurpreet
    • G01N23/04A61B6/00G01T7/00
    • A61B6/582A61B6/03A61B6/035A61B6/583G01N23/046
    • An apparatus for calibrating an x-ray computed tomography device has a plurality of objects formed from a material that is visible to x-rays. The plurality of objects are configured to receive x-rays without changing shape, and have substantially the same shape. The objects each have an object attenuation value to x-rays and a center point such that they are symmetrically shaped relative to their respective center points. The apparatus also has a base at least in part fixedly supporting the plurality of objects so that each of the plurality of objects contacts at least one of the other objects. Like other physical objects, such as the objects, the base has a base attenuation value to x-rays, and that value is greater than the base attenuation value. The center points of the plurality of objects together form a three-dimensional volume.
    • 用于校准X射线计算机断层摄影装置的装置具有由对X射线可见的材料形成的多个物体。 多个物体被配置为接收x射线而不改变形状,并且具有基本相同的形状。 每个物体都具有对X射线的物体衰减值和中心点,使得它们相对于它们各自的中心点对称地成形。 该装置还具有基部,该基部至少部分地固定地支撑多个物体,使得多个物体中的每一个与至少一个其他物体接触。 与其他物理对象(如物体)一样,基座对x射线具有基本衰减值,并且该值大于基本衰减值。 多个物体的中心点一起形成三维体积。