Systems and methods for determining a radiation dose

    公开(公告)号:US12121753B2

    公开(公告)日:2024-10-22

    申请号:US17823500

    申请日:2022-08-30

    IPC分类号: A61N5/00 A61N5/10

    CPC分类号: A61N5/1071 A61N5/1075

    摘要: The embodiments of the present disclosure provide a system for determining a radiation dose. The system may include: obtaining data related to radiation source, a radiation auxiliary image of a target object at a target radiation time point, and an initial fluence map corresponding to the target radiation time point; determining a target fluence map corresponding to the target radiation time point by one or more iterations based on the radiation auxiliary image, the initial fluence map, and the data related to radiation source; obtaining a target scanning image of the target object; and determining the radiation dose received by the target object at the target radiation time point, based on the target fluence map, the target scanning image, and the data related to radiation source.

    System and method for estimating and manipulating estimated radiation dose

    公开(公告)号:US11986671B2

    公开(公告)日:2024-05-21

    申请号:US16992560

    申请日:2020-08-13

    发明人: Karl Otto

    IPC分类号: A61N5/10 A61N5/00 G01T1/29

    摘要: Methods are provided for permitting manipulation of an achievable dose distribution estimate deliverable by a radiation delivery apparatus for proposed treatment of a subject. One such method comprises: determining a dose modification voxel for which it is desired to modify the dose value and a corresponding magnitude of desired dose modification; for each of a plurality of beams: (i) characterizing the beam as a two-dimensional array of beamlets, wherein each beamlet is associated with a corresponding intensity value and a ray line representing the projection of the beamlet into space; and (ii) identifying one or more dose-change beamlets which have associated ray lines that intersect the dose modification voxel; modifying the intensity values of at least one of the dose-change beamlets; and updating the achievable dose distribution estimate to account for the modified intensity values of the at least one of the dose-change beamlets.