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公开(公告)号：EP1680023B1
公开(公告)日：2008-08-27
申请号：EP04768991.4
申请日：2004-10-22
申请人： Elekta AB (publ)
发明人： BROWN, Kevin, John
CPC分类号： A61N5/1081 , A61N5/10 , A61N5/1042 , A61N5/1082
摘要： A radiation therapy/surgery device optimised to meet the needs of the Neurosurgeon is provided, i.e. one for the treatment of tumours in the brain. It combines the qualities of a good penumbra and accuracy, simple prescription and operation, together with high reliability and minimal technical support. The device comprises a rotateable support, on which is provided a mount extending from the support out of the plane of the circle, and a radiation source attached to the mount via a pivot, the pivot having an axis which passes through the axis of rotation of the support, the radiation source being aligned so as to produce a beam which passes through the co-incidence of the rotation axis and the pivot. It will generally be easier to engineer the apparatus if the rotateable support is planar, and more convenient if the rotateable support is disposed in an upright position. The rotation of the rotateable support will be eased if this part of the apparatus is circular. A particularly preferred orientation is one in which the radiation source is spaced from the rotateable support, to allow it to pivot without fouling the latter. It is thus preferred that the mount extends transverse to the support. In this way, the pivot axis is spaced from the rotateable support providing free space in which the radiation source can pivot. Another way of expressing this preference is to state that the pivot axis is located out of the plane of the rotateable support. To simplify the geometry of the device and the associated arithmetic, it is preferred both that the pivot axis is substantially perpendicular to the rotation axis, and that the beam direction is perpendicular to the pivot axis. It is preferred that the radiation source is a linear accelerator. The output of the radiation source is preferably collimated to conform to the shape of the area to be treated.
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公开(公告)号：EP1899984A2
公开(公告)日：2008-03-19
申请号：EP06764882.4
申请日：2006-06-30
申请人： Elekta AB (publ)
发明人： BOURNE, Duncan, Neil
IPC分类号： G21K1/02
CPC分类号： G21K1/02
摘要： We propose to shape the leaf by the use of electro-chemical machining (ECM). ECM is a technique by which a blank is suspended within a mould, with a small gap therebetween. A conductive fluid is caused to flow through the gap, and a large electrical current is passed from the mould to the blank. The blank steadily erodes, dissolving into the fluid. The fluid should not provoke a reaction from the material of the blank, such as a surface oxide. Sodium Chloride solution is a common choice. The current that is passed can, if desired, be controlled to a profile that will affect the manner of erosion. Thus, the current profile can be a steady on/off current, or it can be pulsed. One known arrangement is for the current to rise to a peak, then fall to zero, followed by a brief reverse flow.
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公开(公告)号：EP1680023A1
公开(公告)日：2006-07-19
申请号：EP04768991.4
申请日：2004-10-22
申请人： Elekta AB (publ)
发明人： BROWN, Kevin, John
CPC分类号： A61N5/1081 , A61N5/10 , A61N5/1042 , A61N5/1082
摘要： A radiation therapy/surgery device optimised to meet the needs of the Neurosurgeon is provided, i.e. one for the treatment of tumours in the brain. It combines the qualities of a good penumbra and accuracy, simple prescription and operation, together with high reliability and minimal technical support. The device comprises a rotateable support, on which is provided a mount extending from the support out of the plane of the circle, and a radiation source attached to the mount via a pivot, the pivot having an axis which passes through the axis of rotation of the support, the radiation source being aligned so as to produce a beam which passes through the co-incidence of the rotation axis and the pivot. It will generally be easier to engineer the apparatus if the rotateable support is planar, and more convenient if the rotateable support is disposed in an upright position. The rotation of the rotateable support will be eased if this part of the apparatus is circular. A particularly preferred orientation is one in which the radiation source is spaced from the rotateable support, to allow it to pivot without fouling the latter. It is thus preferred that the mount extends transverse to the support. In this way, the pivot axis is spaced from the rotateable support providing free space in which the radiation source can pivot. Another way of expressing this preference is to state that the pivot axis is located out of the plane of the rotateable support. To simplify the geometry of the device and the associated arithmetic, it is preferred both that the pivot axis is substantially perpendicular to the rotation axis, and that the beam direction is perpendicular to the pivot axis. It is preferred that the radiation source is a linear accelerator. The output of the radiation source is preferably collimated to conform to the shape of the area to be treated.
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公开(公告)号：EP1364375A1
公开(公告)日：2003-11-26
申请号：EP02702483.5
申请日：2002-02-27
申请人： Elekta AB (publ)
IPC分类号： G21K1/04
CPC分类号： A61N5/1042 , A61N5/1047 , G21K1/04 , G21K1/046
摘要： A radiotherapeutic apparatus employs a collimator (52) set below a radiation source (50) and is adapted to move along an arc (54) substantially centred on the radiation source (50). As it sweeps the arc, the collimator (52) is adjusted so as to define the appropriate shape of radiation beam. A continuous sweep over the patient avoids edge artefacts and localised accumulation of leakage.
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公开(公告)号：EP1203514A1
公开(公告)日：2002-05-08
申请号：EP00949794.2
申请日：2000-08-03
申请人： Elekta AB (publ)
摘要： An accelerator comprises a plurality of accelerating cells arranged to convey a beam, adjacent cells being linked by a coupling cell, the coupling cells being arranged to dictate the ratio of electric field in the respective adjacent accelerating cells, at least one coupling cell being switchable between a positive ratio and a negative ratio. Such an accelerator in effect inserts a phase change into the E field by imposing a negative ratio, meaning that the beam will meet a reversed electric field in subsequent cells and will in fact be decelerated. As a result, the beam can be developed and bunched in early cells while accelerating to and/or at relativistic energies, and then bled of energy in later cells to bring the beam energy down to (say) between 100 and 300 KeV. Energies of this magnitude are comparable to diagnostic X-rays, where much higher contrast of bony structures exists. Hence the accelerator can be used to take kilovoltage portal images. A suitable structure for the switchable coupling cell comprises a cavity containing a conductive element rotatable about an axis transverse to the beam axis, as for example set out in our earlier application PCT/GB99/00187. The application also relates to the use of such an accelerator and an operating method for such an accelerator.
摘要翻译： 加速器包括布置成传送波束的多个加速单元，由耦合单元链接的相邻单元，耦合单元布置成指示各个相邻加速单元中的电场比率，至少一个耦合单元可在 正比率和负比率。 这种加速器实际上通过施加负比例而将相变插入到E场中，这意味着光束将在随后的单元中遇到反向电场并且实际上将被减速。 结果，光束可以在早期细胞中发育并聚集，同时加速到和/或在相对论能量上，然后在后面的细胞中释放能量，使光束能量降低到100-300KeV之间（比如说）。 这个量级的能量与诊断X射线相当，其中存在更高的骨结构对比度。 因此，加速器可用于拍摄千伏门户图像。 用于可切换耦合单元的合适结构包括腔室，该腔室包含可围绕横向于光束轴线的轴线旋转的导电元件，例如在我们先前的申请PCT / GB99 / 00187中提出的。 本申请还涉及这种加速器的使用和这种加速器的操作方法。
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公开(公告)号：EP1201107A1
公开(公告)日：2002-05-02
申请号：EP00951706.1
申请日：2000-08-03
申请人： Elekta AB (publ)
摘要： This is an improvement on our earlier application, PCT/GB99/00187. The device then disclosed allowed the variation of the coupling between two points in an RF circuit in a very simple way whilst maintaining the RF phase relationship and varying the relative magnitude of the RF fields. It was characterised by a simple single mechanical control of coupling value, that has negligible effect on the phase shift across the device. This was achieved by the simple rotation of the polarisation of a TE111 mode inside a cylindrical cavity. In this application, a slight frequency dependence on the angle of rotation is correctable by a relative excess of material located opposite the apertures between the coupling cavity and the accelerating cavities.
摘要翻译： 这是对我们先前的申请PCT / GB99 / 00187的改进。 然后公开的装置允许以非常简单的方式改变RF电路中两点之间的耦合，同时保持RF相位关系并改变RF场的相对量值。 它的特点是耦合值的简单单一机械控制，对整个器件的相移影响可以忽略不计。 这是通过在圆柱形腔内简单旋转TE111模的偏振来实现的。 在此应用中，旋转角度的微小频率依赖性可通过位于耦合腔和加速腔之间的孔的相对过量的材料来校正。
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公开(公告)号：EP2708919B1
公开(公告)日：2021-12-22
申请号：EP13184676.8
申请日：2013-09-17
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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：EP3383492A1
公开(公告)日：2018-10-10
申请号：EP16805803.0
申请日：2016-12-02
申请人： Elekta AB (PUBL)
发明人： SJÖLUND, Jens
IPC分类号： A61N5/10
CPC分类号： A61N5/1001 , A61N5/1031 , A61N5/1038 , A61N5/1039 , A61N5/1084
摘要： A treatment planning system for a radiotherapy apparatus comprises a processor that receives an input data set comprising: a dose distribution within a volume to be irradiated that is to be achieved by the radiotherapy apparatus; a three dimensional volume image that characterises tissue types within the volume; and a set of process parameters which characterise a delivery process of radiotherapy. The system outputs a treatment plan to deliver the dose distribution when implemented by the delivery process, by optimising a function that includes at least one part representing a time-dependent response of the tissue types to an applied radiation dose. The input data set may further comprise a number of treatment fractions over which the dose distribution is to be delivered and the processor arranged to assign fractional parts of the dose distribution to successive treatment fractions, taking into account time and dose dependent characteristics of the tissue types in the volume image. The three-dimensional volume image may characterise the tissue types according to at least their local microenvironment. The at least one part representing a time-dependent response of the tissue types may represent at least one of a cell repair model and a tumour diffusion model.
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公开(公告)号：EP2716328B1
公开(公告)日：2018-07-18
申请号：EP13185964.7
申请日：2013-09-25
申请人： Elekta AB (publ)
发明人： Bourne, Duncan
CPC分类号： A61B6/0407 , A61B6/0442 , A61B6/0457 , A61B6/06 , A61B6/4411 , A61N5/1081 , Y10T29/49826
摘要： Embodiments of the present invention provide a system and a method for attaching peripheral devices (such as collimators and electron applicators) to a system such as a radiotherapy system or radiography system. By re-using the lifting mechanism of the patient support to lift the peripheral device vertically, the invention reduces the need for heavy manual lifting.
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