PARTICLE DOSE OPTIMIZATION FOR PARTICLE ARC THERAPY

    公开(公告)号:US20240245930A1

    公开(公告)日:2024-07-25

    申请号:US18559991

    申请日:2022-05-13

    Applicant: Elekta, Inc.

    Abstract: Systems and techniques may be used to generate a radiotherapy treatment plan to execute using a particle beam from a continuously rotating gantry towards a target. A technique may include identifying a target location within a tumor of a patient, providing a particle beam configured to deliver radiotherapy treatment to the tumor along a trajectory using at least two energies including a first energy and a second energy, the first energy greater than the second energy, and determining a first location along the trajectory past the target location and a second location before the target location along the trajectory. The technique may include determining a configuration for the particle beam to deliver the first energy to the first location and the second energy to the second location. In some examples, a radiotherapy treatment plan according to the configuration may be output.

    Revolving radiation collimator
    7.
    发明授权

    公开(公告)号:US11826582B2

    公开(公告)日:2023-11-28

    申请号:US17313453

    申请日:2021-05-06

    Abstract: Devices, systems and method that allow for delivery of therapeutic radiation beams of differing sizes or shapes during a radiation treatment are provided herein. Such devices can include a rotatable collimator body having multiple collimator channels of differing size or shape defined therein, the channels extending through the collimator body substantially perpendicular to the axis of rotation. The collimator body can include markers thereon to facilitate detection of an alignment position by a sensor of a control system to allow the collimator body to be rapidly and accurately moved between alignment positions to facilitate delivery of differing therapy beams during a treatment.

    Downstream Variable Thickness Energy Selection System for Charged Particle Therapy

    公开(公告)号:US20230264041A1

    公开(公告)日:2023-08-24

    申请号:US18004160

    申请日:2021-07-02

    CPC classification number: A61N5/10 A61N2005/1087 A61N2005/1095

    Abstract: A variable thickness energy selection system for use in a charged particle therapy system is arranged within the nozzle housing downstream of monitoring systems, such as a dose monitor and spot position monitor. This positions the energy selection system proximal to the patient. The thickness of an absorber within the energy selection system can be varied quickly without requiring the ion beam to be turned off between energy selections, thereby allowing for rapid control of the energy selection of the ion beam. The absorber may include one or more high density solid absorbers, or a high-density liquid absorber contained in a closed fluid dynamic system that includes an enclosure positioned within the beam path and a reservoir positioned outside of the beam path.

    LINAC JOINTS
    10.
    发明公开
    LINAC JOINTS 审中-公开

    公开(公告)号:US20230239991A1

    公开(公告)日:2023-07-27

    申请号:US18000052

    申请日:2021-05-28

    Applicant: Elekta Limited

    Abstract: A reusable joint for a medical linac, a reusable CF choke flange for a medical linac, a linac and a method for forming a reusable joint for a medical linac are disclosed. The reusable joint comprises a CF choke flange, a CF cover flange and a gasket. The CF choke flange comprises a first waveguide aperture, a choke groove and a first CF groove comprising a first knife-edge, wherein the choke groove is disposed radially inwards from the first CF groove on the CF choke flange. The CF cover flange comprises a second waveguide aperture aligned with the first waveguide aperture and a second CF groove comprising a second knife-edge and aligned with the first CF groove. The gasket is disposed between and in contact with the first CF groove and the second CF groove.

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