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公开(公告)号：US11033756B2
公开(公告)日：2021-06-15
申请号：US14851527
申请日：2015-09-11
申请人： ELEKTA AB (PUBL)
发明人： John Allen , Colin Winfield
摘要： A radiotherapy apparatus comprises a source for producing a beam of ionising radiation along an axis, the beam covering a maximum aperture of the source, a collimator for collimating the beam to produce a collimated beam covering a sub-part of the maximum aperture, a patient support positioned in the path of the beam, a rotatable gantry, on which the source is mounted, for rotating the source around the patient support thereby to deliver the beam from a range of directions, an imaging device located opposite the source and with the patient support between the source and the imaging device, and mounted on the gantry via a drive member allowing translational motion of the imaging device in at least one direction perpendicular to the axis, and a control unit adapted to control the drive member to move the imaging device within the maximum aperture and maintain coincidence between the imaging device and the sub-part of the maximum aperture. Accordingly, the EPID can be moved during the treatment in order to maintain the collimated field of the radiation beam within the bounds of the EPID. This ensures that the image is valid and prevents damage to the EPID as a result of exposure of more sensitive (or less shielded) parts to the beam.
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公开(公告)号：US20150003711A1
公开(公告)日：2015-01-01
申请号：US13927391
申请日：2013-06-26
申请人： Elekta AB (Publ)
发明人： Colin Winfield , Abdul Sayeed
IPC分类号： G06T7/00
CPC分类号： G06T7/0012 , A61N5/1071 , A61N2005/1054 , G06F17/30259 , G06F19/00 , G06F19/321 , G06F19/3481 , G06K9/6202 , G06T2207/10004 , G06T2207/10116 , G16H20/40 , G16H30/20 , G16H50/20
摘要： Embodiments of the invention provide systems and methods for evaluating treatment parameters for a patient undergoing radiotherapy. The method includes the step of generating a portal dosimetry image showing differences between a planning image obtained prior to a treatment session and a portal image obtained during the treatment session. A database of prior portal dosimetry results is accessed, and a processor is used to perform a similarity measurement between the portal dosimetry image and the prior portal dosimetry results. Based on the similarity measurement, the system determines whether radiation was delivered as planned during the treatment session.
摘要翻译： 本发明的实施例提供了用于评估经历放射治疗的患者的治疗参数的系统和方法。 该方法包括生成门诊剂量测定图像的步骤，该图像显示在治疗会话之前获得的规划图像与在治疗期间获得的门静图像之间的差异。 访问先前门户剂量测定结果的数据库，并且处理器用于在门户剂量测定图像和先前的门户剂量测定结果之间执行相似性测量。 根据相似性测量，系统确定在治疗期间辐射是否按计划传送。
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公开(公告)号：US20130315367A1
公开(公告)日：2013-11-28
申请号：US13956605
申请日：2013-08-01
申请人： Elekta AB (publ)
发明人： Christopher Knox , Colin Winfield , Kevin Brown
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/4233 , A61B6/466 , A61N2005/1061
摘要： An apparatus has a patient support, a rotatable gantry supporting a source of imaging radiation, and a radiation detector that operates in a cyclical pattern of an exposure phase followed by a readout phase. For a first detector cycle in which the gantry has a first angle of rotation, the source of radiation is controlled to emit a first radiation beam pulse during the exposure phase, and respective first imaging data is read out during the readout phase. For a second, subsequent detector cycle, it is determined if the gantry has rotated through at least a threshold angular displacement relative to said first angle of rotation, and if so, the source of radiation is controlled to emit a second radiation beam pulse during the exposure phase, and respective second imaging data is read out during the readout phase.
摘要翻译： 一种装置具有患者支撑件，支撑成像辐射源的可旋转机架以及以曝光阶段的周期性图案操作的辐射检测器，随后是读出阶段。 对于其中机架具有第一旋转角度的第一检测器循环，在曝光阶段期间控制辐射源发射第一辐射束脉冲，并且在读出阶段期间读出相应的第一成像数据。 对于第二个随后的检测器周期，确定台架是否相对于所述第一旋转角度旋转了至少一个阈值角位移，如果是，则控制辐射源在第二辐射束脉冲期间发射第二辐射束脉冲 曝光阶段，并且在读出阶段期间读出各自的第二成像数据。
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公开(公告)号：US09953416B2
公开(公告)日：2018-04-24
申请号：US14992117
申请日：2016-01-11
申请人： ELEKTA AB (PUBL)
发明人： Colin Winfield , Abdul Sayeed
CPC分类号： G06T7/0012 , A61N5/1071 , A61N2005/1054 , G06F17/30259 , G06F19/00 , G06F19/321 , G06F19/3481 , G06K9/6202 , G06T2207/10004 , G06T2207/10116 , G16H20/40 , G16H30/20 , G16H50/20
摘要： Embodiments of the invention provide systems and methods for evaluating treatment parameters for a patient undergoing radiotherapy. The method includes the step of generating a portal dosimetry image showing differences between a planning image obtained prior to a treatment session and a portal image obtained during the treatment session. A database of prior portal dosimetry results is accessed, and a processor is used to perform a similarity measurement between the portal dosimetry image and the prior portal dosimetry results. Based on the similarity measurement, the system determines whether radiation was delivered as planned during the treatment session.
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公开(公告)号：US20160074673A1
公开(公告)日：2016-03-17
申请号：US14851527
申请日：2015-09-11
申请人： ELEKTA AB (PUBL)
发明人： John Allen , Colin Winfield
IPC分类号： A61N5/10
CPC分类号： A61N5/1049 , A61B6/032 , A61N5/1036 , A61N5/1047 , A61N5/107 , A61N5/1081 , A61N5/1083 , A61N2005/1054 , A61N2005/1074
摘要： A radiotherapy apparatus comprises a source for producing a beam of ionising radiation along an axis, the beam covering a maximum aperture of the source, a collimator for collimating the beam to produce a collimated beam covering a sub-part of the maximum aperture, a patient support positioned in the path of the beam, a rotatable gantry, on which the source is mounted, for rotating the source around the patient support thereby to deliver the beam from a range of directions, an imaging device located opposite the source and with the patient support between the source and the imaging device, and mounted on the gantry via a drive member allowing translational motion of the imaging device in at least one direction perpendicular to the axis, and a control unit adapted to control the drive member to move the imaging device within the maximum aperture and maintain coincidence between the imaging device and the sub-part of the maximum aperture. Accordingly, the EPID can be moved during the treatment in order to maintain the collimated field of the radiation beam within the bounds of the EPID. This ensures that the image is valid and prevents damage to the EPID as a result of exposure of more sensitive (or less shielded) parts to the beam.
摘要翻译： 放射治疗装置包括用于产生沿着轴的电离辐射束的源，所述束覆盖源的最大孔径，用于准直光束以产生覆盖最大孔径的子部分的准直束的准直器，患者 定位在梁的路径中的支撑件，可旋转机架，源安装在该可旋转机架上，用于使源围绕患者支架旋转，从而从一系列方向输送束;成像装置，位于与源相对的位置，与病人 源和成像装置之间的支撑，并且经由驱动构件安装在台架上，驱动构件允许成像装置在垂直于轴线的至少一个方向上进行平移运动;以及控制单元，适于控制驱动构件以使成像装置 并且保持成像装置与最大光圈的子部分之间的重合。 因此，EPID可以在治疗期间移动，以便将辐射束的准直场保持在EPID的范围内。 这确保了图像有效，并且防止由于将更敏感（或更少屏蔽）的部件暴露于光束而导致对EPID的损坏。
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公开(公告)号：US09271684B2
公开(公告)日：2016-03-01
申请号：US13956605
申请日：2013-08-01
申请人： Elekta AB (publ)
发明人： Christopher Knox , Colin Winfield , Kevin Brown
CPC分类号： A61B6/032 , A61B6/4233 , A61B6/466 , A61N2005/1061
摘要： An apparatus has a patient support, a rotatable gantry supporting a source of imaging radiation, and a radiation detector that operates in a cyclical pattern of an exposure phase followed by a readout phase. For a first detector cycle in which the gantry has a first angle of rotation, the source of radiation is controlled to emit a first radiation beam pulse during the exposure phase, and respective first imaging data is read out during the readout phase. For a second, subsequent detector cycle, it is determined if the gantry has rotated through at least a threshold angular displacement relative to said first angle of rotation, and if so, the source of radiation is controlled to emit a second radiation beam pulse during the exposure phase, and respective second imaging data is read out during the readout phase.
摘要翻译： 一种装置具有患者支撑件，支撑成像辐射源的可旋转机架以及以曝光阶段的周期性图案操作的辐射检测器，随后是读出阶段。 对于其中机架具有第一旋转角度的第一检测器循环，在曝光阶段期间控制辐射源发射第一辐射束脉冲，并且在读出阶段期间读出相应的第一成像数据。 对于第二个随后的检测器周期，确定台架是否相对于所述第一旋转角度旋转了至少一个阈值角位移，如果是，则控制辐射源在第二辐射束脉冲期间发射第二辐射束脉冲 曝光阶段，并且在读出阶段期间读出各自的第二成像数据。
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公开(公告)号：US09269137B2
公开(公告)日：2016-02-23
申请号：US13927391
申请日：2013-06-26
申请人： Elekta AB (Publ)
发明人： Colin Winfield , Abdul Sayeed
CPC分类号： G06T7/0012 , A61N5/1071 , A61N2005/1054 , G06F17/30259 , G06F19/00 , G06F19/321 , G06F19/3481 , G06K9/6202 , G06T2207/10004 , G06T2207/10116 , G16H20/40 , G16H30/20 , G16H50/20
摘要： Embodiments of the invention provide systems and methods for evaluating treatment parameters for a patient undergoing radiotherapy. The method includes the step of generating a portal dosimetry image showing differences between a planning image obtained prior to a treatment session and a portal image obtained during the treatment session. A database of prior portal dosimetry results is accessed, and a processor is used to perform a similarity measurement between the portal dosimetry image and the prior portal dosimetry results. Based on the similarity measurement, the system determines whether radiation was delivered as planned during the treatment session.
摘要翻译： 本发明的实施例提供了用于评估经历放射治疗的患者的治疗参数的系统和方法。 该方法包括生成门诊剂量测定图像的步骤，该图像显示在治疗会话之前获得的规划图像与在治疗期间获得的门静图像之间的差异。 访问先前门户剂量测定结果的数据库，并且处理器用于在门户剂量测定图像和先前的门户剂量测定结果之间执行相似性测量。 根据相似性测量，系统确定在治疗期间辐射是否按计划传送。
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