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    Determination of dynamic DRRs
    1.
    发明授权
    Determination of dynamic DRRs 有权

    公开(公告)号：US12118648B2

    公开(公告)日：2024-10-15

    申请号：US18309968

    申请日：2023-05-01

    Applicant: Brainlab AG

    Inventor： Kajetan Berlinger ,  Birte Domnik ,  Elisa Garcia Corisco ,  Pascal Bertram

    IPC: G06T11/00 ,  A61B6/00 ,  A61B6/03 ,  A61B6/12 ,  A61N5/10 ,  G06T7/00 ,  G06T7/20 ,  G16H50/50

    CPC classification number: G06T11/003 ,  A61B6/032 ,  A61B6/12 ,  A61B6/486 ,  A61B6/5223 ,  A61B6/5288 ,  A61N5/1037 ,  A61N5/1049 ,  G06T7/0012 ,  G06T7/20 ,  G06T11/008 ,  G16H50/50 ,  A61N2005/1062 ,  G06T2207/10076 ,  G06T2207/10081 ,  G06T2207/10124 ,  G06T2207/30241 ,  G06T2211/412

    Abstract: A computer implemented method for determining a two dimensional DRR referred to as dynamic DRR based on a 4D-CT, the 4D-CT describing a sequence of three dimensional medical computer tomographic images of an anatomical body part of a patient, the images being referred to as sequence CTs, the 4D-CT representing the anatomical body part at different points in time, the anatomical body part comprising at least one primary anatomical element and secondary anatomical elements, the computer implemented method comprising the following steps: acquiring the 4D-CT; acquiring a planning CT, the planning CT being a three dimensional image used for planning of a treatment of the patient, the planning CT being acquired based on at least one of the sequence CTs or independently from the 4D-CT, acquiring a three dimensional image, referred to as undynamic CT, from the 4D-CT, the undynamic CT comprising at least one first image element representing the at least one primary anatomical element and second image elements representing the secondary anatomical elements; acquiring at least one trajectory, referred to as primary trajectory, based on the 4D-CT, the at least one primary trajectory describing a path of the at least one first image element as a function of time; acquiring trajectories of the second image elements, referred to as secondary trajectories, based on the 4D-CT; for the image elements of the undynamic CT, determining trajectory similarity values based on the at least one primary trajectory and the secondary trajectories, the trajectory similarity values respectively describing a measure of similarity between a respective one of the secondary trajectories and the at least one primary trajectory; determining the dynamic DRR by using the determined trajectory similarity values, and, in case the planning CT is acquired independently from the 4D-CT, further using a transformation referred to as planning transformation from the undynamic CT to the planning CT, at least a part of image values of image elements of the dynamic DRR being determined by using the trajectory similarity values.

    Compartmentalized dynamic atlas
    2.
    发明授权
    Compartmentalized dynamic atlas 有权

    公开(公告)号：US12112845B2

    公开(公告)日：2024-10-08

    申请号：US17281644

    申请日：2018-11-07

    Applicant: Brainlab AG

    Inventor： Kajetan Berlinger ,  Andreas Blumhofer

    IPC: G06K9/00 ,  G06T7/00 ,  G16H30/40

    CPC classification number: G16H30/40 ,  G06T7/0016 ,  G06T2207/10076 ,  G06T2207/10081

    Abstract: A compartmentalized dynamic anatomic atlas is disclosed, comprising static atlas data comprising spatial element data and element representation data, wherein the spatial element data describes spatial properties of a spatial atlas element and wherein the element representation data describes representational properties assignable to the spatial atlas element, the atlas further comprising dynamic atlas data comprising information on a dynamic property which information is respectively linked to the spatial atlas element.

    Tracking Soft Tissue in Medical Images
    3.
    发明公开
    Tracking Soft Tissue in Medical Images 审中-公开

    公开(公告)号：US20230230236A1

    公开(公告)日：2023-07-20

    申请号：US18123117

    申请日：2023-03-17

    Applicant: Brainlab AG

    Inventor： Kajetan Berlinger ,  Stephan Froehlich

    IPC: G06T7/00 ,  G16H30/40

    CPC classification number: G06T7/0012 ,  G16H30/40 ,  G06T2207/30061 ,  G06T2207/10081

    Abstract: The present invention relates to a medical data processing method of determining the representation of an anatomical body part (2) of a patient (1) in a sequence of medical images, the anatomical body part (2) being subject to a vital movement of the patient (1), the method being constituted to be executed by a computer and comprising the following steps:



    a) acquiring advance medical image data comprising a time-related advance medical image comprising a representation of the anatomical body part (2) in a specific movement phase;
    b) acquiring current medical image data describing a sequence of current medical images, wherein the sequence comprises a specific current medical image comprising a representation of the anatomical body part (2) in the specific movement phase, and a tracking current medical image which is different from the specific current medical image and comprises a representation of the anatomical body part (2) in a tracking movement phase which is different from the specific movement phase;
    c) determining, based on the advance medical image data and the current medical image data, specific image subset data describing a specific image subset of the specific current medical image, the specific image subset comprising the representation of the anatomical body part (2);
    d) determining, based on the current medical image data and the image subset data, subset tracking data describing a tracked image subset in the tracking current medical image, the tracked image subset comprising the representation of the anatomical body part (2).

    Binary tracking of an anatomical tracking structure on medical images
    5.
    发明授权
    Binary tracking of an anatomical tracking structure on medical images 有权

    公开(公告)号：US11565129B2

    公开(公告)日：2023-01-31

    申请号：US16070112

    申请日：2017-06-13

    Applicant: Brainlab AG

    Inventor： Birte Domnik ,  Kajetan Berlinger

    IPC: A61N5/10 ,  G16H20/40 ,  G16H30/40 ,  G06T5/30 ,  G06T5/40 ,  G06V10/44 ,  G06V10/46

    Abstract: Disclosed is a computer-implemented method for determining a position of an anatomical tracking structure in a tracking image usable for controlling a radiation treatment such as at least one of radiotherapy or radio surgery of a patient, a corresponding computer program, a non-transitory program storage medium storing such a program and a computer for executing the program, as well as a system for the position of an anatomical tracking structure in a tracking image usable for controlling a radiation treatment such as at least one of radiotherapy or radio surgery of a patient, a system comprising an electronic data storage device and the aforementioned computer.

    Frameless Pre-Positioning for Radiosurgery
    9.
    发明申请
    Frameless Pre-Positioning for Radiosurgery 审中-公开

    公开(公告)号：US20180344265A1

    公开(公告)日：2018-12-06

    申请号：US16058674

    申请日：2018-08-08

    Applicant: Brainlab AG

    Inventor： Kajetan Berlinger ,  Stephan Froehlich ,  Eva Maria Gronbach

    IPC: A61B6/04

    Abstract: The presently described method is directed to determining a way of positioning a patient before execution of a medical procedure involving irradiating the patient with ionizing treatment radiation based on comparing medical images of the patient with a pre-acquired medical image. The planning computed tomography is searched for an image of the reference stricture in order to determine the position of the patient relative to a patient support device. A retroreflective marker device, having a known and advantageously fixed position relative to the base plate, is detected by a navigation system operatively coupled to a motor of the support device. Based on the detected position of the marker device, the motor of the support device is activated to drive the patient into a desired position relative to beam direction along which the treatment radiation is to be issued towards the patient to execute the medical procedure.

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