Radiation therapy systems and methods using an external signal

    公开(公告)号:US11376446B2

    公开(公告)日:2022-07-05

    申请号:US16978825

    申请日:2019-03-08

    IPC分类号: A61B6/00 A61N5/10

    摘要: There is disclosed a method for estimating the position of a target in a body of a subject. The method includes, receiving an external signal that is related with motion of the target; and using a model of a correlation between the external signal and the motion of the target to estimate the position of the target, wherein said position estimation includes an estimate of three dimensional location and orientation of the target. The method further includes periodically receiving a 2-dimensional projection of the target; and updating the model of correlation between the external signal and the motion of the target based on a comparison of the estimated position of the target and the 2-dimensional projection of the target. The method is used in guided radiation therapy.