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    DATA AUGMENTATION
    11.
    发明申请
    DATA AUGMENTATION 有权

    公开(公告)号：US20220076069A1

    公开(公告)日：2022-03-10

    申请号：US17415776

    申请日：2019-12-16

    Applicant: RaySearch Laboratories AB

    Inventor： Ola WEISTRAND

    IPC: G06K9/62 ,  G06T19/20

    Abstract: A method for generating data representing the volume of part of a body, the method comprising generating a point distribution model “PDM” based on an input dataset comprising data representing at least one surface of part of a body, the PDM defining a surface model dataset based on an average dataset and one or more weight-eigenvector pairs, generating a first surface model dataset based on the PDM by modifying at least one weight of the one or more weight-eigenvector pairs, wherein the first surface model dataset is different from the average dataset, and generating an output volume dataset based on the first surface model dataset and a first reference dataset, the first reference dataset comprising data representing the volume of a corresponding part of a body, the output volume dataset comprising data representing a deformed volume of the corresponding part of the body.

    Obtaining an energy spectrum of a focused ion beam
    12.
    发明授权
    Obtaining an energy spectrum of a focused ion beam 有权

    公开(公告)号：US11170974B2

    公开(公告)日：2021-11-09

    申请号：US17097199

    申请日：2020-11-13

    Applicant: RaySearch Laboratories AB

    Inventor： Martin Janson

    IPC: H01J37/30 ,  H01J37/05 ,  H01J37/304

    Abstract: It is provided a method for obtaining an energy spectrum of a focused ion beam when a Bragg peak chamber is used to measure an integrated depth dose, IDD. The method comprises the steps of: simulating doses of a set of nominally mono energetic focused ion beams; determining a lateral extension of a Bragg peak chamber to evaluate; calculating a set of theoretic component IDD curves, CIDDs, by laterally integrating the dose of the simulated set of the nominally mono energetic focused ion beams, over the lateral extension of the Bragg peak chamber; storing calculated CIDDs; obtaining a measured IDD of a focused ion beam with a nominal energy using the Bragg peak chamber; and performing a fit of a linear combination of CIDDs to the measured IDD, to determine an energy spectrum for the focused ion beam with the nominal beam energy.

    A METHOD AND A CORRESPONDING RADIATION TREATMENT SYSTEM FOR FACILITATING OPTIMIZATION OF A MULTIMODAL RADIATION THERAPY PLAN
    14.
    发明申请
    A METHOD AND A CORRESPONDING RADIATION TREATMENT SYSTEM FOR FACILITATING OPTIMIZATION OF A MULTIMODAL RADIATION THERAPY PLAN 有权

    公开(公告)号：US20210205635A1

    公开(公告)日：2021-07-08

    申请号：US17057170

    申请日：2019-05-27

    Applicant: RaySearch Laboratories AB

    Inventor： Rasmus BOKRANTZ ,  Albin FREDRIKSSON ,  Kjell ERIKSSON ,  Erik ENGWALL ,  Erik TRANEUS

    IPC: A61N5/10

    Abstract: The present disclosure generally relates to the field of radiation treatment. More specifically, the present disclosure generally relates to methods and radiation treatment systems for facilitating a multimodal radiation therapy treatment plan, in particular a multimodal radiation therapy plan employing a combined photon beam and electron beam radiation treatment. According to one example embodiment described in the disclosure, a method may comprise obtaining information related to a set of candidate beam types for the combined photon beam and electron beam radiation treatment; comparing the set of candidate beam types against a selection criterion to establish a subset of beam types from the candidate beam types; and generating the combined photon beam and electron beam radiation treatment plan utilizing the thus established subset of beam types.

    Determining a distribution of spots of varying sizes for ion beam therapy using optimization
    15.
    发明授权
    Determining a distribution of spots of varying sizes for ion beam therapy using optimization 有权

    公开(公告)号：US11020616B2

    公开(公告)日：2021-06-01

    申请号：US16625871

    申请日：2018-06-26

    Applicant: RaySearch Laboratories AB

    Inventor： Erik Engwall ,  Lars Glimelius ,  Martin Janson

    IPC: A61N5/10

    Abstract: According to a first aspect, it is presented a method for determining a treatment plan comprising a distribution of spots for use with ion beam therapy for providing the spots in a target volume. The method comprises the steps of: selecting energy layers to be used in the treatment plan; determining a number of spot sizes to use; generating, for each energy layer, one copy of the energy layer for each spot size to use and populating each copy with spots of the spot size for that copy; optimizing spots of all copies of all energy layers, by repeatedly varying a weight of at least a subset of the spots and calculating an effect on a performance measurement, wherein the performance measurement is calculated by combining a plurality of evaluation criteria, comprising a first criterion related to total treatment time and a second criterion related to a desired dose distribution.

    ASSIGNING RIPPLE FILTER SETTINGS
    16.
    发明申请
    ASSIGNING RIPPLE FILTER SETTINGS 有权

    公开(公告)号：US20210154492A1

    公开(公告)日：2021-05-27

    申请号：US16625988

    申请日：2018-06-28

    Applicant: RaySearch Laboratories AB

    Inventor： Erik ENGWALL ,  Martin JANSON ,  Lars GLIMELIUS

    IPC: A61N5/10

    Abstract: It is provided a method for determining ripple filter settings for an ion therapy beam being capable of providing ions of different energy levels to a target volume. The method is performed in a treatment planning system and comprises the steps of: determining at least one beam direction to use to cover a target volume; and assigning a ripple filter setting to each one of a plurality of sub-beams of each one of the at least one beam direction such that each sub-beam is assigned a different ripple filter setting, wherein each ripple filter setting results in a different effect on a Bragg peak width in a direction along the beam, and each energy level is assigned to one of the plurality of sub-beams. The step of assigning a ripple filter setting comprises optimizing based on different filter settings for different sub-beams for each beam direction.

    System and method for handling image data
    19.
    发明授权
    System and method for handling image data 有权

    公开(公告)号：US10467761B2

    公开(公告)日：2019-11-05

    申请号：US15738891

    申请日：2016-06-23

    Applicant: RaySearch Laboratories AB

    Inventor： Ola Weistrand

    IPC: G06K9/00 ,  G06T7/174 ,  G06T7/12 ,  G06T3/00 ,  G06T7/00 ,  G06T15/08

    Abstract: A data processing unit receives a reference image (IMG13D) of a deformable physical entity, a target image (IMG23D) of said physical entity, and a first region of interest (ROI13D) defining a first volume in the reference image (IMG13D) representing a reference image element. The reference image (IMG13D), the target image (IMG23D) and the first region of interest (ROI13D) all contain 3D datasets. In response to user commands (c1; c2), the data processing unit defines a first contour (C12D) in a first plane through the target image (IMG23D), which is presented to a user via a display unit together with graphic data reflecting the reference image (IMG13D), the target image (IMG23D) and the first region of interest (ROI13D). The first contour (C12D) is aligned with at least a portion of a first border (IEB1) of a target image element (IE3D) in the target image (IMG23D). The target image element (IE3D) corresponds to the reference image element in the reference image (IMG13D). Based on the first contour (C12D), the target image (IMG23D) and the first region of interest (ROI13D); the data processing unit determines a second region of interest (ROI23D) defining a second volume in the target image (IMG23D).

    System and method for determining a radiation treatment plan and a radiation therapy machine
    20.
    发明授权
    System and method for determining a radiation treatment plan and a radiation therapy machine 有权

    公开(公告)号：US10441812B2

    公开(公告)日：2019-10-15

    申请号：US15367872

    申请日：2016-12-02

    Applicant: RaySearch Laboratories AB

    Inventor： Rasmus Bokrantz ,  Björn Hårdemark

    IPC: A61N5/10

    Abstract: An output radiation treatment plan for at least one target in a treatment volume is determined. Each target is associated with a prescribed radiation dose. An updated treatment plan causes the prescribed radiation dose to be delivered to the target when implemented by a radiation therapy machine. The updated treatment plan requires an updated delivery time to complete and is calculated by: [i] receiving a numerical value designating an upper bound on modulation efficiency of the updated treatment plan, [ii] receiving a current treatment plan, [iii] calculating a current delivery time for the current treatment plan, [iv] calculating an un-modulated delivery time for the current treatment plan, and [v] calculating the updated treatment plan by executing an optimization process while satisfying the upper bound on the modulation efficiency. Steps [ii] to [v] are traversed a predetermined number of times. Thereafter, the output radiation treatment plan is generated.

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