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    Pinhole collimator systems and methods
    1.
    发明授权
    Pinhole collimator systems and methods 有权

    公开(公告)号：US12064644B2

    公开(公告)日：2024-08-20

    申请号：US17482221

    申请日：2021-09-22

    Applicant: Varian Medical Systems, Inc.

    Inventor： Flavio Poehlmann-Martins ,  Joshua McNeur ,  Alexander Cahill ,  Ognian Sabev ,  Reza Alibazi Behbahani

    IPC: A61N5/10

    CPC classification number: A61N5/103 ,  A61N5/1042

    Abstract: Presented systems and methods enable efficient and effective radiation treatment planning and treatment, including accurate and convenient transmission of the radiation towards a tissue target. In one embodiment, a radiation system includes a particle source, a bremsstrahlung target, and a pinhole collimator. The particle source is configured to produce a particle beam (e.g., an electron beam, etc.). The bremsstrahlung target is configured to receive the particle beam and generate a photon radiation beam. The received particle beam and generated photon radiation beam can correspond to an inflected image. The inflected image can be associated with a tumor/tissue target. The pinhole collimator is configured to receive the photon radiation beam in a pattern that corresponds to the inflected image, invert the photon radiation beam pattern, and forward the results towards a tissue target.

    Radiation treatment planning for delivering high dose rates to spots in a target
    2.
    发明授权
    Radiation treatment planning for delivering high dose rates to spots in a target 有权

    公开(公告)号：US12023519B2

    公开(公告)日：2024-07-02

    申请号：US17681565

    申请日：2022-02-25

    Applicant: Varian Medical Systems, Inc.

    Inventor： Eric Abel ,  Alexander Katsis

    IPC: A61N5/10

    CPC classification number: A61N5/1038 ,  A61N5/103 ,  A61N2005/1087 ,  A61N2005/1089 ,  A61N2005/109

    Abstract: Information that describes a target inside a patient to be treated with radiation is accessed from computer system memory. An arrangement of spots inside the target is determined. Each the spots corresponds to a location inside the target where a respective beam of radiation is to be directed during radiation treatment of the patient. A dose rate for each of the beams is determined. The dose rate for each beam is a dose delivered in less than one second to a spot corresponding to that beam. For example, each beam can deliver at least four grays (GY) in less than one second, and may deliver as much as 20 Gy to 50 Gy or 100 Gy or more in less than one second. A radiation treatment plan, that includes the arrangement of the spots and the dose rate for each of the beams, is stored in computer system memory.

    Method for real-time correction of a spatial position of a central beam of radiation therapy devices and of a patient position
    3.
    发明授权
    Method for real-time correction of a spatial position of a central beam of radiation therapy devices and of a patient position 有权

    公开(公告)号：US11986675B2

    公开(公告)日：2024-05-21

    申请号：US17286808

    申请日：2019-11-06

    Applicant: STÄDTISCHES KLINIKUM DESSAU

    Inventor： Markus Wösle

    IPC: A61N5/10

    CPC classification number: A61N5/1064 ,  A61N5/103 ,  A61N5/1045 ,  A61N5/1047 ,  A61N5/1048 ,  A61N5/1049 ,  A61N5/1067 ,  A61N5/107

    Abstract: A method provides real-time correction of the spatial position of the central beam of radiation therapy devices and therapy simulators, along with the patient position. In particular, the method relates to the real-time correction of irradiation positions of the collimator and/or the position of the patient positioning table during the performance of radiation therapy or therapy simulation. Positional deviations of the central beam of existing radiation therapy devices are reduced. Position adjustments of the collimator elements and/or of the patient support table are carried out through functional connections of separate control modules via separate adjustment devices. Those are added to the collimator and/or patient support table. Calculation of the correction movements takes place outside the radiation therapy device in the irradiation planning system and/or in at least one microcontroller of the control system of the radiation therapy device.

    METHOD AND APPARATUS TO MODIFY DOSE VALUES DURING RADIATION TREATMENT PLANNING
    5.
    发明公开
    METHOD AND APPARATUS TO MODIFY DOSE VALUES DURING RADIATION TREATMENT PLANNING 审中-公开

    公开(公告)号：US20240100357A1

    公开(公告)日：2024-03-28

    申请号：US17953584

    申请日：2022-09-27

    Applicant: Siemens Healthineers International AG

    Inventor： Jani Kurki ,  Matti Kemppainen ,  Laura Korhonen ,  Veli-Pekka Kihniä ,  Lauri Halko ,  Jarmo Makkonen ,  Pekka Sorvari

    IPC: A61N5/10

    CPC classification number: A61N5/103 ,  A61N5/1049

    Abstract: A control circuit configured as a multi-criteria optimizer generates a radiation therapy treatment plan. The circuit then determines a resultant dose distribution as a function of the radiation therapy treatment plan and presents, on a display, at least a part of that resultant dose distribution. The latter may comprise, for example, presenting at least one isodose line on the display. The control circuit then detects user manipulation of a user interface. By one approach, this manipulation does not include corresponding immediate movement of any part of the presented resultant dose distribution itself. In particular, the detected user manipulation does not result in dragged movement of an isodose line on the display. Upon detecting that user manipulation, the control circuit modifies a dose value at a particular location on the presented resultant dose distribution as a function of that user manipulation of the user interface to provide a modified dose distribution and/or, by one approach, a new candidate radiation therapy treatment plan as an interpolation and/or mix of the treatment plans generated by a multi-criteria optimizer.

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