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公开(公告)号：US09105096B2
公开(公告)日：2015-08-11
申请号：US13744959
申请日：2013-01-18
申请人： Elekta AB (Publ)
CPC分类号： G06T7/0081 , G06T7/11 , G06T2207/20016 , G06T2207/20072 , G06T2207/20101
摘要： An apparatus and method of segmenting an image using scribble segmentation is provided. An image is segmented by constraining the membership value of a subset of image elements, solving a weighted biharmonic equation subject to the constrained membership values wherein the weights are determined from similarities between image elements, and determining the final segmentation based on the membership value of each image element. An image may also be segmented by constraining a membership value of a subset of image elements, determining the unknown membership values given the constraints by solving a linear equation system using a multigrid technique, and updating a coarser level of the multigrid hierarchy to account for additional constraints using patch matrices.
摘要翻译： 提供了一种使用模糊分割来分割图像的装置和方法。 通过约束图像元素的子集的隶属值来分割图像，解决受约束的隶属度值的加权的双调和方程，其中根据图像元素之间的相似度确定权重，并且基于每个图像的隶属度值确定最终的分割 图像元素 也可以通过约束图像元素的子集的隶属值来分割图像，通过使用多网格技术求解线性方程组来确定给定约束的未知成员值，以及更新多格层次结构的较粗级别以考虑额外的 使用补丁矩阵的约束。
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公开(公告)号：US20150144811A1
公开(公告)日：2015-05-28
申请号：US14524605
申请日：2014-10-27
申请人： Elekta AB (Publ)
IPC分类号： A61N5/01
CPC分类号： A61N5/1081 , A61N5/01 , A61N2005/1057
摘要： A radiotherapy apparatus includes a rotatable drum on which is mounted a gantry arm carrying a radiation source, the arm extending from the drum to locate the source is offset from the axis of rotation of the drum and oriented towards the axis, and a mechanism to apply a tilt to the arm depending on the rotational orientation of the drum.
摘要翻译： 放射治疗装置包括可旋转的鼓，其上安装有承载辐射源的龙门臂，从鼓延伸以定位源的臂从鼓的旋转轴线偏离并且朝向轴定向，并且应用机构 根据鼓的旋转方向倾斜到臂。
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公开(公告)号：US20150124938A1
公开(公告)日：2015-05-07
申请号：US14565873
申请日：2014-12-10
申请人： Elekta AB (publ)
IPC分类号： G21K1/04
CPC分类号： G21K1/046 , A61N5/1042 , A61N5/1045 , G21K1/04
摘要： A multi-leaf collimator for a radiotherapy apparatus comprises at least one array of laterally-spaced elongate leaves, each leaf being driven by an associated motor connected to the leaf via a drive means so as to extend or retract the leaf in its longitudinal direction, the drive means comprising a sub-frame on which at least a subset of the motors are mounted, the sub-frame being mounted at a location spaced from the leaf array in a direction transverse to the lateral and longitudinal directions, and including a plurality of threaded drives disposed longitudinally, each being driven by a motor and being operatively connected to a leaf thereby to drive that leaf.
摘要翻译： 用于放射治疗装置的多叶片准直器包括至少一个横向间隔开的细长叶片的阵列，每个叶片由相关联的马达驱动，该马达通过驱动装置连接到叶片，以便沿其纵向方向延伸或缩回叶片， 所述驱动装置包括其上安装有所述电动机的至少一个子集的子框架，所述子框架安装在与所述叶阵列相隔离的横向于横向和纵向方向的位置处，并且包括多个 螺纹驱动器纵向设置，每个由马达驱动并且可操作地连接到叶片，从而驱动该叶片。
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公开(公告)号：US20150082220A1
公开(公告)日：2015-03-19
申请号：US14275837
申请日：2014-05-12
申请人： Elekta AB (Publ)
IPC分类号： A61N5/10 , G06F3/0484 , G06F3/0481 , G06F3/0482
CPC分类号： A61N5/1039 , A61N5/103 , A61N5/1048 , A61N2005/1074 , G06F3/04817 , G06F3/0482 , G06F3/04842
摘要： The present disclosure relates to methods of systems for radiotherapy. Embodiments of the present disclosure may provide a carousel to display the plurality of images to a user and receive an input from the user for selecting one or more images displayed in the carousel. A graphical user interface may be provided for displaying to the user the one or more images selected from the carousel.
摘要翻译： 本公开涉及放射治疗系统的方法。 本公开的实施例可以提供用于向用户显示多个图像的轮盘，并且从用户接收用于选择在圆盘传送带中显示的一个或多个图像的输入。 可以提供图形用户界面以向用户显示从轮播中选择的一个或多个图像。
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公开(公告)号：US20140275698A1
公开(公告)日：2014-09-18
申请号：US13835685
申请日：2013-03-15
申请人： ELEKTA AB (PUBL)
发明人： Mattias LIDSTRÖM , Malcolm WILLIAMS , Bartosz GORKA , Rui CHEN , Thomas ARN
IPC分类号： A61N5/10
摘要： The present invention relates to the field of radiation therapy. In particular, the invention concerns systems and methods for monitoring intra-fraction motions of patients in connection with treatment cancer in radiation therapy system. A patient marker is attached on the nose of the patient and images of the patient marker and reference markers of a reference tool is captured at predetermined time intervals, wherein the reference tool comprises reference markers and is arranged in a defined position relative to a patient fixation arrangement for fixation of the patient during treatment. A position of the patient marker relative the reference tool is determined based on images captured by an optical tracking system, wherein changes in the position provide information if the patient or a part of the patient has moved.
摘要翻译： 本发明涉及放射治疗领域。 特别地，本发明涉及用于监测与辐射治疗系统中的治疗癌症相关的患者的部分内运动的系统和方法。 将患者标记附着在患者的鼻子上，并且以预定的时间间隔捕获参考工具的患者标记和参考标记的图像，其中参考工具包括参考标记，并且相对于患者固定件被布置在限定位置 治疗期间患者固定的安排。 基于由光学跟踪系统拍摄的图像来确定患者标记物相对于参考工具的位置，其中如果患者或患者的一部分已经移动，则位置的改变提供信息。
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公开(公告)号：US20140169519A1
公开(公告)日：2014-06-19
申请号：US13717792
申请日：2012-12-18
申请人： ELEKTA AB (PUBL)
CPC分类号： A61B6/482 , A61B6/032 , A61B6/06 , A61B6/405 , A61B6/4258
摘要： Combined systems that rely on a single source able to switch between therapeutic emissions and diagnostic emissions for a cone-beam CT scanner can be improved by rotating the collimator during CT scanning to allow a wider maximum aperture. The detector can also be positioned in an offset manner so as to take best advantage of this aperture. The rotated position for a collimator with a rectangular aperture (such as a square) can be one in which a diagonal of the aperture lies transverse to the plane swept out by the beam axis during rotation of the mount. More generally, where the aperture has at least one straight edge, the predetermined position is one in which the straight edge lies at an oblique angle to the plane swept out by the beam axis during rotation of the mount.
摘要翻译： 通过在CT扫描期间旋转准直仪可以改善依赖于能够在锥束CT扫描仪的治疗发射和诊断发射之间切换的单个源的组合系统，以允许更宽的最大光圈。 检测器也可以以偏移方式定位，以便最佳地利用该孔。 用于具有矩形孔径（例如正方形）的准直器的旋转位置可以是在安装件旋转期间孔径的对角线横向于由光束轴线扫出的平面的旋转位置。 更通常地，在孔具有至少一个直边缘的情况下，预定位置是直线边缘处于与安装件旋转期间由梁轴扫过的平面成倾斜角的位置。
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公开(公告)号：US20130251218A1
公开(公告)日：2013-09-26
申请号：US13647513
申请日：2012-10-09
申请人： ELEKTA AB ( PUBL)
IPC分类号： G06K9/32
CPC分类号： G06T7/0024 , G06T7/30 , G06T2207/10072 , G06T2207/30004
摘要： The co-registration error can be estimated by performing a number of additional iterative co-registrations, each iteration having a starting point dictated by the found co-registration transformation, and using a set of initial parameters different to that of the co-registration being tested. The spread in the resulting co-registrations can then be used as the estimate of the co-registration error. The variations in the set of initial parameters can include (i) the candidate transformation which the iteration uses as its starting point, adopting starting points that are offset from the co-registration being tested, (ii) the sample points used for the mutual information metric (or whichever metric is used to optimise the transformation), and (iii) the region-of-interest that is selected. Ideally, all three are varied to some extent within the plurality of additional co-registrations that are performed, and an average value is taken.
摘要翻译： 可以通过执行多个附加的迭代共同注册来估计共同注册错误，每个迭代具有由所发现的共同注册转换指定的起始点，并且使用与共同注册的初始参数不同的一组初始参数 测试。 然后，可以将所得到的共同注册中的扩展用作共同注册错误的估计。 初始参数集合中的变化可以包括（i）迭代使用的候选变换作为起始点，采用与正被测试的共同注册偏移的起始点，（ii）用于互信息的采样点 度量（或用于优化转化的任何度量），以及（iii）所选择的兴趣区域。 理想情况下，在执行的多个附加共同注册中，所有三个在一定程度上是变化的，并且采用平均值。
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公开(公告)号：US20130182955A1
公开(公告)日：2013-07-18
申请号：US13744959
申请日：2013-01-18
申请人： Elekta AB (Publ)
IPC分类号： G06T7/00
CPC分类号： G06T7/0081 , G06T7/11 , G06T2207/20016 , G06T2207/20072 , G06T2207/20101
摘要： An apparatus and method of segmenting an image using scribble segmentation is provided, An image is segmented by constraining the membership value of a subset of image elements, solving a weighted biharmonic equation subject to the constrained membership values wherein the weights are determined from similarities between image elements, and determining the final segmentation based on the membership value of each image element. An image may also be segmented by constraining a membership value of a subset of image elements, determining the unknown membership values given the constraints by solving a linear equation system using a multigrid technique, and updating a coarser level of the multigrid hierarchy to account for additional constraints using patch matrices
摘要翻译： 提供了一种使用模糊分割来分割图像的装置和方法，通过约束图像元素子集的隶属值来分割图像，解决受约束隶属度值的加权双调和方程，其中权重由图像之间的相似度确定 元素，并且基于每个图像元素的隶属度值来确定最终分割。 也可以通过约束图像元素的子集的隶属值来分割图像，通过使用多网格技术求解线性方程组来确定给定约束的未知成员值，以及更新多格层次结构的较粗级别以考虑额外的 使用补丁矩阵的约束
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公开(公告)号：US20240316362A1
公开(公告)日：2024-09-26
申请号：US18576295
申请日：2021-07-30
申请人： Elekta AB (publ)
IPC分类号： A61N5/10
CPC分类号： A61N5/1031
摘要： The present disclosure relates to the field of radiation therapy and methods, software and systems for treatment planning.
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公开(公告)号：US11996178B2
公开(公告)日：2024-05-28
申请号：US17248670
申请日：2021-02-02
申请人： Elekta AB (publ)
发明人： Jens Olof Sjolund
CPC分类号： G16H20/40 , A61N5/1031 , A61N5/1038 , A61N5/1039 , G06N3/08 , G16H30/40 , G16H50/20 , G16H50/50 , G16H50/70 , A61N2005/1032 , A61N2005/1035
摘要： Techniques for generating a radiotherapy treatment plan are provided. The techniques include receiving a radiotherapy optimization problem, the radiotherapy problem comprising a plurality of parameters; processing the radiotherapy optimization problem to instantiate a first set of candidate parameters; converting the first set of candidate parameters into an adapted representation; defining an adapted radiotherapy optimization problem as a function of the adapted representation such that a given solution to the adapted optimization problem estimates a solution to the radiotherapy optimization problem; processing the adapted radiotherapy optimization problem to estimate a function of the solution to the adapted radiotherapy optimization problem; and processing the estimated function of the solution to the adapted optimization problem to generate a deliverable radiotherapy treatment plan.
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