公开(公告)号：EP2359905B1

公开(公告)日：2013-06-19

申请号：EP11000965.1

申请日：2011-02-07

申请人： Elekta AB (PUBL)

发明人： Allen, John ,  Bourne, Duncan ,  Brown, Kevin

IPC分类号： A61N5/10

CPC分类号： A61N5/1045 ,  A61N5/1042 ,  A61N5/1049 ,  A61N5/1081 ,  A61N2005/1054 ,  A61N2005/1055

摘要： Radiotherapy apparatus comprises a source of radiation mounted on a chassis, the chassis being rotatable about a rotation axis and the source being adapted to emit a beam of radiation along a beam axis that intersects with the rotation axis; a patient support, moveable along a translation axis; a set of magnetic coils located on either side of the beam, for establishing a magnetic field at the point of intersection, spaced from that point along a first direction; the translation axis, the rotation axis, and the first direction being substantially parallel; and further comprising a multi-leaf collimator fixed in its orientation with respect to the source of radiation, the multi-leaf collimator comprising a plurality of elongate leaves disposed with their longitudinal directions substantially aligned with the first direction and movable in that direction between a withdrawn position in which the leaf lies outside the beam, an extended position in which the leaf projects across the beam and a plurality of intermediate positions therebetween.

摘要翻译： 辐射治疗装置包括安装在底盘上的辐射源，底盘可围绕旋转轴线旋转，并且该源适于沿着与旋转轴线相交的束轴发射辐射束; 患者支架，可沿平移轴移动; 位于所述梁的任一侧的一组磁性线圈，用于在所述交叉点建立磁场，沿着所述第一方向与所述点间隔开; 平移轴，旋转轴和第一方向基本上平行; 并且还包括相对于所述辐射源固定在其取向的多叶准直器，所述多叶准直器包括多个细长的叶片，所述多叶片准直器的纵向方向基本上与所述第一方向对准，并且在所述方向上可移动， 位于其中叶位于梁的外部的位置，延伸位置，其中叶突出穿过梁以及其间的多个中间位置。

公开(公告)号：EP2378965B1

公开(公告)日：2013-05-22

申请号：EP08875070.8

申请日：2008-12-08

申请人： Elekta AB (PUBL)

发明人： BROWN, Kevin

IPC分类号： A61B5/08 ,  A61B5/113 ,  A61B6/03

CPC分类号： A61B6/032 ,  A61B5/113

公开(公告)号：EP2591375A1

公开(公告)日：2013-05-15

申请号：EP11803198.8

申请日：2011-07-06

申请人： Elekta AB (PUBL).

发明人： SIMOLA, Juha ,  TAULU, Samu

IPC分类号： G01R33/025 ,  G01R33/035 ,  A61B5/04

CPC分类号： A61B5/05 ,  A61B5/0042 ,  A61B5/04008 ,  A61B5/4064 ,  A61B5/7225 ,  G01R33/025 ,  G01R33/035

摘要： The present invention introduces a method for adjusting interference signal estimates provided by multichannel biomagnetic field measurements. A so-called Signal Space Separation method (SSS) is applied in the calculatory analysis of the measurement signals, providing for the division of the sources causing the fields in objects of interest and external interferences. When the signal basis representing the interferences has been estimated, this interference signal estimate is adjusted by measuring the fields without the object to be measured and without changing the sensor assembly. Interference components obtained in this manner are analyzed in such a way as to include only the most significant interference components. An adjusted interference subspace is formed, by means of which signal processing and the analysis of the useful signals can be continued.

摘要翻译： 本发明引入了一种用于调整由多通道生物磁场测量提供的干扰信号估计的方法。 所谓的信号空间分离方法（SSS）被应用在测量信号的计算分析中，从而使源分离引起感兴趣对象中的场和外部干扰。 当估计出表示干扰的信号基准时，通过测量不需要测量对象的场而不改变传感器组件来调整该干扰信号估计。 以这种方式获得的干扰组件以仅包括最重要的干扰分量的方式进行分析。 此外，考虑到仅包括测量的干扰分量的那些形式的干扰，这些干扰分量在计算的SSS模型中尚不存在。 最后，形成调整后的干扰子空间，通过该处理可以继续信号处理和有用信号的分析。 在本发明中，还可以考虑到不正确的功能信号通道并将其等同于外部干扰。 在一个实施例中，也可以对内部基准的信号，即感兴趣的信号执行上述处理。

公开(公告)号：EP2558162A1

公开(公告)日：2013-02-20

申请号：EP10720260.8

申请日：2010-04-15

申请人： Elekta AB (PUBL)

发明人： LAGENDIJK, Jan ,  RAAYMAKERS, Bas

IPC分类号： A61N5/10 ,  G01R33/48

CPC分类号： A61N5/1049 ,  A61B5/055 ,  A61B6/06 ,  A61B6/5217 ,  A61N2005/1055 ,  G01R33/3806 ,  G01R33/4808

摘要： A number of radiotherapy systems are disclosed, each having an integrated imaging apparatus to track movement of the target region and so guide the therapeutic radiation beam during treatment. Various systems are disclosed in which the imaging data obtained by the imaging apparatus is simplified, to reduce the data acquisition time and so improve the temporal resolution of the imaging system and consequently the accuracy of the radiation treatment.

摘要翻译： 描述了放射治疗装置，其包括用于朝向患者的目标区域产生治疗束的辐射源。 准直装置被配置为在垂直于光束轴线的平面中作用在光束上。 成像装置被配置为获得目标区域的成像数据。 控制装置被配置为从成像装置接收成像数据并根据其控制准直装置。 成像数据包括至少一个二维切片图像，其仅包括在任何一个方向上定向且包括目标区域的单个二维切片图像。

公开(公告)号：EP2546800A2

公开(公告)日：2013-01-16

申请号：EP12175444.4

申请日：2012-07-06

申请人： Elekta AB (publ)

发明人： Jarliden, Andreas E. ,  Hennix, Marcus L.

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。 通过约束图像元素的子集的隶属值来分割图像，解决受约束成员资格值的加权双调和方程，其中根据图像元素之间的相似度确定权重，并且基于每个图像元素的隶属度值来确定最终分割 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资格值，以及更新多网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

公开(公告)号：EP2542306A1

公开(公告)日：2013-01-09

申请号：EP10716753.8

申请日：2010-03-02

申请人： Elekta AB (PUBL)

发明人： HUMPHREY, Malcolm

IPC分类号： A61N5/10 ,  G21K1/04 ,  G01B11/00 ,  G01S17/06

CPC分类号： G21K1/046 ,  A61N5/1045 ,  A61N5/1048 ,  G01B11/00 ,  G01S5/16

摘要： Apparatus for location-detection of an object within a region can comprise a reflective element mountable on the object, a scanning light source adapted to issue a beam of light in a scanning pattern illuminating a point that moves over the region, and a detector for light reflected from the reflective element. This can be used for leaf position detection in a multi-leaf collimator comprising an array of laterally spaced elongate leaves each having a longitudinal edge on which is mounted a, reflective element, a scanning light source adapted to issue a beam of light in a scanning pattern, illuminating a point that moves over the longitudinal edges of a plurality of leaves of the array, and a detector for light reflected from the reflective elements. A multi-leaf collimator of this type can be incorporated into a radiotherapeutic apparatus.

公开(公告)号：EP2069016B1

公开(公告)日：2012-07-11

申请号：EP07818614.5

申请日：2007-10-02

申请人： Elekta AB (publ)

发明人： GARDING, Jonas ,  KJÄLL, Per ,  LIDBERG, Pär

IPC分类号： A61N5/10

CPC分类号： A61N5/1031 ,  A61N5/1084

摘要： A treatment planning method comprises the steps of identifying a plurality of treatment locations and an overall dose to be applied to each, for each specific location identifying the global dose applied at that location by doses aimed at different locations, as a proportion of the dose applied at the respective different location, constructing a dose factor matrix containing for each location, the global doses arising from the dose applied at each other location, inverting the dose factor matrix and multiplying it with a prescription matrix containing the overall doses to be applied to each location, thereby to obtain a resultant matrix containing a local dose for each location. This provides a mathematically straightforward method of deriving the necessary doses to be applied to each target so that, including the global doses delivered while irradiating a different target, each target receives the correct total dose. Some locations can be omitted from the treatment planning method, for example if they are located so far from the other locations that they will not have a significant interaction with them. A corresponding treatment planning apparatus is also described.

公开(公告)号：EP2464303A1

公开(公告)日：2012-06-20

申请号：EP09777902.9

申请日：2009-08-14

申请人： Elekta AB (PUBL)

发明人： MYRMAN, Mattias

IPC分类号： A61B19/00 ,  A61B17/34 ,  A61B19/08

CPC分类号： A61B90/11 ,  A61B46/10 ,  A61B90/14 ,  A61B90/50 ,  A61B2017/3409 ,  A61B2034/2068

摘要： A patient can be taken to the operating theatre where a measurement arm can be used to locate fiducial markers relative to a fixed substrate. As a result, the location of the region of interest is known. An instrument guide, adapted to constrain movement of an instrument thereon, can then be positioned at a suitable location, and its location checked by way of the measurement arm. A computing means connected to the measurement arm so as to receive information as to the location of the tip can be programmed to determine a desired necessary movement of the guide in order to locate the instrument at a desired location relative to the region of interest. The guide can then be moved in a controlled and accurate manner from its initial position to an accurately determined correct position.

摘要翻译： 患者可以被带到手术室，在手术室可以使用测量臂来相对于固定基底定位基准标记。 结果，感兴趣区域的位置是已知的。 然后可以将适合于限制器械在其上的移动的器械引导件定位在合适的位置，并且通过测量臂检查其位置。 连接到测量臂以便接收关于尖端的位置的信息的计算装置可以被编程以确定引导件的期望的必要运动，以便将器械定位在相对于感兴趣区域的期望位置处。 然后，可以以可控且准确的方式将引导件从其初始位置移动到精确确定的正确位置。

公开(公告)号：EP1540667B1

公开(公告)日：2012-06-13

申请号：EP03733798.7

申请日：2003-06-25

申请人： Elekta AB (publ)

发明人： CARLSSON, Per ,  HANNER, Gert ,  ALKSNIS, Ivars ,  NILSSON, Anders ,  FRÖBERG, Peter

IPC分类号： G21K1/02 ,  A61N5/01

CPC分类号： A61N5/1084 ,  G21K1/04

摘要： A radiation therapy device and a method of changing the spatial dose distribution surrounding a focus are disclosed. At least a subset of the radioactive sources in a source carrier is linearly displaceable relatively to at least a subset of collimator passage inlets, or vice versa.

公开(公告)号：EP1606639B1

公开(公告)日：2012-05-02

申请号：EP04719479.0

申请日：2004-03-11

申请人： Elekta AB (publ)

发明人： SIMOLA, Juha, Elekta Neuromag Oy ,  KAJOLA, Matti, Elekta Neuromag Oy ,  TAULU, Samu, Elekta Neuromag Oy

IPC分类号： G01R33/02

CPC分类号： G01R33/02

摘要： The invention relates to a method and device by means of which an irrotational, sourceless vector field can be expressed by a number of physically reasonable basis vectors as small as possible in such a manner that the measured signals can be unambiguously divided into signals of the irrotational, sourceless vector field that are caused by an interesting object or external interferences, as well as into a signal caused by the nonideality of the measuring device, which signal is not included in the model of the signal space describing an irrotational, sourceless vector field. The invention is based on the combining of two very fundamental mathematical regularities and applying in the processing of signal vectors of a multi-channel measuring device that measures an irrotational, sourceless vector field: on the Maxell’s equations of an irrotational, sourceless vector field, as well as on the convergence characteristics of series developments.