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公开(公告)号：EP3315170A3
公开(公告)日：2018-06-20
申请号：EP17194941.5
申请日：2017-10-05
申请人： Elekta AB (PUBL)
摘要： A method for the measurement of dose distribution in radiotherapy apparatus comprising an apparatus for generating a beam of therapeutic radiation and an imaging apparatus, one or both apparatuses being mounted to a rotatable gantry adapted in use to rotate around a bore of the radiotherapy apparatus and around an isocentre therein, the method comprising: placing a detector holder within a tank, the detector holder comprising a radio-opaque marker and a visual reference point, the marker and the reference point being separated and in a fixed spatial relationship to each other, and the tank in use containing a liquid having a surface level uppermost; locating the tank within the bore such that the detector holder is in the vicinity of the isocentre; rotating the gantry and monitoring the position of the detector holder using the imaging apparatus to determine the position of the marker relative to the isocentre; displacing the detector holder vertically such that the reference point is positioned at a point level with a desired surface level of the liquid, and adding liquid to or removing liquid from the tank until the surface of the liquid is at the same level as the reference point. Features of the detector holder and tank are also described.
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公开(公告)号：EP3315170A2
公开(公告)日：2018-05-02
申请号：EP17194941.5
申请日：2017-10-05
申请人： Elekta AB (PUBL)
摘要： A method for the measurement of dose distribution in radiotherapy apparatus comprising an apparatus for generating a beam of therapeutic radiation and an imaging apparatus, one or both apparatuses being mounted to a rotatable gantry adapted in use to rotate around a bore of the radiotherapy apparatus and around an isocentre therein, the method comprising: placing a detector holder within a tank, the detector holder comprising a radio-opaque marker and a visual reference point, the marker and the reference point being separated and in a fixed spatial relationship to each other, and the tank in use containing a liquid having a surface level uppermost; locating the tank within the bore such that the detector holder is in the vicinity of the isocentre; rotating the gantry and monitoring the position of the detector holder using the imaging apparatus to determine the position of the marker relative to the isocentre; displacing the detector holder vertically such that the reference point is positioned at a point level with a desired surface level of the liquid, and adding liquid to or removing liquid from the tank until the surface of the liquid is at the same level as the reference point. Features of the detector holder and tank are also described.
摘要翻译： 一种用于测量辐射治疗设备中的剂量分布的方法，该方法包括用于产生治疗辐射束的设备和成像设备，一个或两个设备安装在可旋转机架上，该机架适合用于围绕放射治疗设备的孔旋转并围绕 所述方法包括：将检测器保持器放置在罐中，所述检测器保持器包括不透射线的标记和视觉参考点，所述标记和所述参考点彼此分离并且彼此固定的空间关系，以及 使用中的罐包含具有最高表面水平的液体; 将所述罐定位在所述孔内，使得所述检测器保持器位于所述等中心附近; 旋转机架并使用成像装置监测检测器支架的位置以确定标记相对于等中心的位置; 垂直地移动探测器支架，使得参考点位于具有期望的液体表面水平的点水平面上，并且将液体添加到水箱或从水箱移除液体，直到液体的表面与参考点处于相同水平 。 还介绍了探测器支架和水箱的特点。
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公开(公告)号：EP2865419B1
公开(公告)日：2019-03-06
申请号：EP14188422.1
申请日：2014-10-10
申请人： Elekta AB (Publ)
发明人： Brown, Kevin , Roberts, David , Harasimowicz, Janusz , Sell, Martin , Byrne, Julian , Fuerst, Armin
IPC分类号： A61N5/10
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公开(公告)号：EP2865419A1
公开(公告)日：2015-04-29
申请号：EP14188422.1
申请日：2014-10-10
申请人： ELEKTA AB (publ.)
发明人： Brown, Kevin , Roberts, David , Harasimowicz, Janusz , Sell, Martin , Byrne, Julian , Fuerst, Armin
IPC分类号： A61N5/10
CPC分类号： A61B6/584 , A61B6/582 , A61B6/583 , A61B2560/0228 , A61N5/1048 , A61N5/1049 , A61N5/1075 , A61N2005/1052 , A61N2005/1055 , A61N2005/1076
摘要： A method of aligning the radiation beam in a radiotherapy system comprising a source for producing a beam of radiation and a device for imaging from the beam, both mounted so as to be rotatable about an axis using a fiducial phantom between the source and the device, the method comprising: rotating the beam and device in a trajectory about the axis while obtaining a plurality of images of the fiducial phantom from a plurality of different angles, determining from each image of the fiducial phantom the position of the source at the rotational position the image was obtained, and calculating the centre of rotation of the positions of the source to define the isocentre of the system. The invention enables the alignment of a collimator with the source of radiation, the reduction of asymmetry in beam intensity, and is also applicable to magnetic resonance-guided radiotherapy.
摘要翻译： 一种在放射治疗系统中对准辐射束的方法，该放射治疗系统包括用于产生辐射束的源和用于从束成像的装置，两者被安装成可以在源和装置之间使用基准体模绕轴旋转， 该方法包括：在从多个不同的角度获得基准体模的多个图像的同时围绕轴线的轨迹旋转光束和设备，从基准体模的每个图像确定源在旋转位置处的位置， 获得图像，并计算源的位置的旋转中心以定义系统的等中心。 本发明使得准直器与辐射源的对准，光束强度的不对称性的降低，并且也适用于磁共振引导放射治疗。
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