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    OFFLINE ANGLE SELECTION IN ROTATIONAL IMAGING AND TRACKING SYSTEMS
    81.
    发明申请
    OFFLINE ANGLE SELECTION IN ROTATIONAL IMAGING AND TRACKING SYSTEMS 有权

    公开(公告)号：US20220305290A1

    公开(公告)日：2022-09-29

    申请号：US17833654

    申请日：2022-06-06

    申请人： Accuray Incorporated

    发明人： Petr Jordan ,  Andriy Myronenko ,  Calvin Maurer ,  Eric Schnarr ,  Rob O'Connell

    IPC分类号： A61N5/10 ,  A61B5/055 ,  A61B6/03

    摘要： A method of operating imaging and tracking. The method includes determining, for each angle of a plurality of angles from which tracking images can be generated by an imaging device, a value of a tracking quality metric for tracking a target based on an analysis of a projection generated at that angle. The method also includes selecting, by a processing device, a subset of the plurality of angles that have a tracking quality metric value that satisfies a tracking quality metric criterion, one or more angles of the subset to be used to generate a tracking image of the target during a treatment stage, wherein the subset comprises at least a first angle and a second angle that is at least separated by a minimum threshold from the first angle.

    Selecting imaging perspectives to optimize tracking volume detectability and model quality
    85.
    发明授权
    Selecting imaging perspectives to optimize tracking volume detectability and model quality 有权

    公开(公告)号：US11278743B1

    公开(公告)日：2022-03-22

    申请号：US17014021

    申请日：2020-09-08

    申请人： ACCURAY INCORPORATED

    发明人： Charles Brandon Frederick ,  Robert Elijah Broadhurst ,  Eric Schnarr

    IPC分类号： A61N5/00 ,  A61N5/10 ,  G06K9/32

    摘要： An image of a region of interest (ROI) is identified from a first perspective, the image having an uncertainty value associated with the ROI. A model is generated comprising one or more parameters associated with the ROI based on the image. A plurality of tracking quality metrics for a plurality of perspectives that a subsequent image may be captured from by an imaging system of the ROI are determined using the model, the tracking quality metrics indicating a reduction of the uncertainty value associated with the ROI by the subsequent image. A second perspective of the plurality of perspectives for the subsequent image is selected based on a corresponding tracking quality metric of the plurality of tracking quality metrics for the second perspective indicating a reduction of the uncertainty value.

    SELECTING IMAGING PERSPECTIVES TO OPTIMIZE TRACKING VOLUME DETECTABILITY AND MODEL QUALITY
    86.
    发明申请
    SELECTING IMAGING PERSPECTIVES TO OPTIMIZE TRACKING VOLUME DETECTABILITY AND MODEL QUALITY 有权

    公开(公告)号：US20220072336A1

    公开(公告)日：2022-03-10

    申请号：US17014021

    申请日：2020-09-08

    申请人： ACCURAY INCORPORATED

    发明人： Charles Brandon Frederick ,  Robert Elijah Broadhurst ,  Eric Schnarr

    IPC分类号： A61N5/10 ,  G06K9/32

    摘要： An image of a region of interest (ROI) is identified from a first perspective, the image having an uncertainty value associated with the ROI. A model is generated comprising one or more parameters associated with the ROI based on the image. A plurality of tracking quality metrics for a plurality of perspectives that a subsequent image may be captured from by an imaging system of the ROI are determined using the model, the tracking quality metrics indicating a reduction of the uncertainty value associated with the ROI by the subsequent image. A second perspective of the plurality of perspectives for the subsequent image is selected based on a corresponding tracking quality metric of the plurality of tracking quality metrics for the second perspective indicating a reduction of the uncertainty value.

    COMPENSATING FOR TARGET ROTATION WITH A COLLIMATION SYSTEM
    87.
    发明申请
    COMPENSATING FOR TARGET ROTATION WITH A COLLIMATION SYSTEM 有权

    公开(公告)号：US20220032087A1

    公开(公告)日：2022-02-03

    申请号：US17499702

    申请日：2021-10-12

    申请人： Accuray Incorporated

    发明人： Andrea Cox ,  Eric Schnarr

    IPC分类号： A61N5/10 ,  G21K5/04

    摘要： A method includes detecting a potential setup error in a radiation treatment delivery session of a radiation treatment delivery system, wherein the setup error corresponds to a change in a current position of a treatment target relative to a prior position of the treatment target, and wherein the change includes a rotation relative to the prior position of the treatment target. The method further includes modifying, by a processing device, one or more planned leaf positions of a multileaf collimator (MLC) of a linear accelerator (LINAC) of the radiation treatment delivery system to compensate for the potential setup error corresponding to the rotation of the prior position of the treatment target.