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1. 发明申请

US20090013468A1 Radiotherapy apparatus 审中-公开
标题翻译：放射治疗仪
公开(公告)号：US20090013468A1
公开(公告)日：2009-01-15
申请号：US11827320
申请日：2007-07-11
申请人： Duncan Neil Bourne , Ralph Streamer , Alan Hitchings
发明人： Duncan Neil Bourne , Ralph Streamer , Alan Hitchings
IPC分类号： A61N5/00
CPC分类号： A61N5/1049 , A61B6/0457 , A61B6/5276 , A61N2005/105 , A61N2005/1059
摘要： A patient support system comprises a base, an upstanding support, and a couch attached to the support and having a cantilever section extendable beyond the support; the support including a couch drive means to adjust the position of the couch relative to the support; further comprising a support drive means for translationally driving the support relative to the base in the direction of the cantilever section. This removes inaccuracies from patient position measurements that result from changes in the cantilever geometry during movement of the patient from a measuring position to a treatment position. The support drive means can be located in the base or in the support, and allows the patient support system as a whole to be translated, thereby permitting the patient to be moved into and out of an enclosed treatment area without affecting the vertical location of the patient. The only change to the patient position is in the translational position, which can be calibrated by way of fixed end stops for the support drive means. The present invention further relates to a radiotherapy apparatus, comprising a patient support as set out above, and an enclosed treatment area positioned in line with the cantilever section.
摘要翻译：患者支撑系统包括底座，直立支撑件和连接到支撑件的沙发，并且具有可延伸超过支撑件的悬臂部分; 包括沙发驱动装置的支撑装置用于调节沙发相对于支撑件的位置; 还包括支撑驱动装置，用于在所述悬臂部分的方向上相对于所述基座平移地驱动所述支撑件。这消除了患者从测量位置移动到治疗位置的过程中由于悬臂几何形状的变化引起的患者位置测量的不准确性。支撑驱动装置可以位于基座或支撑件中，并且允许患者支撑系统作为整体被平移，从而允许患者被移入和移出封闭的治疗区域，而不会影响患者的垂直位置患者。患者位置的唯一变化是在平移位置，其可以通过用于支撑驱动装置的固定端部止动器进行校准。本发明还涉及一种放射治疗装置，其包括如上所述的患者支架和与悬臂部分成一直排列的封闭治疗区域。

2. 发明申请

US20100252754A1 Radiotherapy Apparatus 有权
标题翻译：放射治疗仪
公开(公告)号：US20100252754A1
公开(公告)日：2010-10-07
申请号：US12740291
申请日：2007-10-30
申请人： Kevin Brown , Ralph Streamer , Duncan Bourne
发明人： Kevin Brown , Ralph Streamer , Duncan Bourne
IPC分类号： A61N5/10 , G21K1/02
CPC分类号： A61N5/1049 , A61N5/1042 , A61N5/1067 , A61N2005/1061
摘要： Realtime beam shape adjustment in response to (for example) online CT scanning of a patient during treatment is assisted by the radiotherapy apparatus comprising a source adapted to emit a beam of therapeutic radiation, a collimator for delimiting the radiation beam, the collimator comprising a plurality of leaves arranged alongside each other and be moveable longitudinally so that the tips of the leaves define a variable edge of the collimator, the leaves being mounted on a support that is moveable laterally with respect to the leaves. In this way, movements of the tumour that are perpendicular to the direction of leaf motion can be accommodated by simply moving the collimator bodily so as to accommodate this. It is preferred that the apparatus also includes a control means adapted to receive information as to the location of the target volume, and, on the basis of that information, control the longitudinal positions of the leaves and the lateral position of the support. It is also preferred that the support tilts as it moves laterally along a path. This can be achieved, by example, by bearings that are moveable on suitable guides, or by mounting the support on a plurality of pivot arms of unequal lengths. The lengths of such pivot arms can be adjusted as necessary.
摘要翻译：响应于（例如）治疗期间患者的在线CT扫描的实时波束形状调整由包括适于发射治疗辐射束的源的放射治疗装置辅助，用于限定辐射束的准直器，准直器包括多个的叶片彼此并排设置并且可纵向移动，使得叶片的尖端限定准直器的可变边缘，叶片安装在相对于叶片横向移动的支撑件上。以这种方式，垂直于叶片运动方向的肿瘤的运动可以通过简单地移动准直器以适应这一点来适应。优选地，该装置还包括适于接收关于目标体积的位置的信息的控制装置，并且基于该信息控制叶片的纵向位置和支撑件的横向位置。还优选的是，当支撑件沿着路径横向移动时，支撑件倾斜。这可以通过例如通过在合适的导轨上可移动的轴承，或者通过将支撑件安装在不等长度的多个枢轴臂上来实现。这种枢转臂的长度可以根据需要进行调节。

3. 发明授权

US07961843B2 Radiotherapeutic apparatus 有权
标题翻译：放射治疗仪
公开(公告)号：US07961843B2
公开(公告)日：2011-06-14
申请号：US12297891
申请日：2006-04-27
申请人： Kevin Brown , Ralph Streamer , Paul Boxall , Duncan Bourne
发明人： Kevin Brown , Ralph Streamer , Paul Boxall , Duncan Bourne
IPC分类号： A61N5/10
CPC分类号： A61N5/103 , A61N5/1036 , A61N5/1042 , A61N5/1047
摘要： A radiotherapeutic apparatus comprises a source able to emit a beam of therapeutic radiation along a beam axis, a multi-leaf collimator arranged to collimate the beam to a desired shape, wherein the source is rotatable about a rotation axis that is substantially orthogonal and intersects with the beam axis thereby to describe an arc around that axis, and further comprises a control means able to control the dose/time rate of the source, the rotation speed of the source, and the multi-leaf collimator position. The control means is arranged to control the source in accordance with a treatment plan over first and second arc-segments such that at least the multi-leaf collimator changes shape at a different rate per degree in the second arc-segment as to the first arc-segment.
摘要翻译：放射治疗装置包括能够沿着光束轴发射治疗辐射束的源，多叶准直器，被布置成将光束准直到期望的形状，其中源可绕旋转轴线旋转，该旋转轴线基本正交并与光束轴由此描述围绕该轴的弧，并且还包括能够控制源的剂量/时间速率，源的旋转速度和多叶准直器位置的控制装置。控制装置被布置成根据第一和第二弧段上的处理计划来控制源，使得至少多叶准直器以与第一弧段相对应的第二弧段中的每度不同的速率改变形状 -分割。

4. 发明申请

US20070262274A1 Radiotherapeutic Apparatus 有权
标题翻译：放射治疗仪
公开(公告)号：US20070262274A1
公开(公告)日：2007-11-15
申请号：US11662459
申请日：2005-09-29
申请人： Quentin Creed , Duncan Bourne , Ralph Streamer
发明人： Quentin Creed , Duncan Bourne , Ralph Streamer
IPC分类号： G21F3/00
CPC分类号： A61N5/1042 , A61N2005/1056 , G21K1/02
摘要： The present invention therefore provides a method of treating the surface of an item for a radiotherapy apparatus, comprising the steps of machining into a planar reflective surface of the item a stepped profile, each step having a first surface angled to the planar reflective surface such that, in use, the first surface reflects light incident on the planar reflective surface away from the isocentre of the radiotherapy apparatus and a second surface angled with respect to the planar reflective surface and the first surface such that, in use, the second surface is shadowed from light incident on the planar reflective surface by the first surface, the steps having a depth which does not exceed 2.15% of the total depth of the item.
摘要翻译：因此，本发明提供了一种处理放射治疗装置的物品的表面的方法，包括以下步骤：将物品的平面反射表面加工成阶梯形轮廓，每个台阶具有与平面反射表面成角度的第一表面，使得在使用中，所述第一表面反射入射在所述平面反射表面上的光，远离所述放射治疗设备的所述等中心，以及相对于所述平面反射表面和所述第一表面成角度的第二表面，使得在使用中所述第二表面被遮蔽从通过第一表面入射在平面反射表面上的光，台阶的深度不超过物品总深度的2.15％。

5. 发明授权

US08503608B2 Radiotherapeutic apparatus 有权
标题翻译：放射治疗仪
公开(公告)号：US08503608B2
公开(公告)日：2013-08-06
申请号：US12739206
申请日：2007-10-24
申请人： Kevin Brown , Ralph Streamer , Paul Boxall , Duncan Bourne , Christopher James Gibson
发明人： Kevin Brown , Ralph Streamer , Paul Boxall , Duncan Bourne , Christopher James Gibson
IPC分类号： A61N5/10
CPC分类号： A61N5/103 , A61N5/1036 , A61N5/1042
摘要： Apparatus comprising a radiation source which can rotate in an arc around the radiation beam axis, a multi-leaf collimator (MLC), and a controller for the source dose/time rate, the source rotation speed, and the MLC position. The controller calculates the time required for (i) an MLC leaf movement from start to end of an arc-segment at a maximum leaf speed, (ii) rotation of the source from start to end of the arc-segment at a maximum speed, and (iii) delivery of the dose at a maximum dose rate per time, selects the longest of (i), (ii) and (iii), and operates the selected one at its maximum and the others at a reduced rate matching that longest time, the time required for (i) and/or (ii) being the greater of the time to complete the segment at a continuous speed and the time to accelerate the item to that speed.
摘要翻译：装置包括可围绕辐射束轴旋转的辐射源，多叶准直器（MLC）和用于源剂量/时间速率，源旋转速度和MLC位置的控制器。控制器计算（i）以最大叶速度从弧段的开始到结束的MLC叶移动所需的时间，（ii）以最大速度从弧段的开始到结束的旋转，和（iii）以每次最大剂量率递送剂量，选择（i），（ii）和（iii）中最长的剂量，并且以最大的速度操作所选择的剂量，而以与最长剂量率相匹配的降低的速率时间，（i）和/或（ii）所需的时间是以连续速度完成分段的时间越长，以及将项目加速到该速度的时间。

6. 发明申请

US20090213991A1 Radiotherapeutic apparatus 有权
标题翻译：放射治疗仪
公开(公告)号：US20090213991A1
公开(公告)日：2009-08-27
申请号：US12297891
申请日：2006-04-27
申请人： Kevin Brown , Ralph Streamer , Paul Boxall , Duncan Bourne
发明人： Kevin Brown , Ralph Streamer , Paul Boxall , Duncan Bourne
IPC分类号： A61N5/10 , H05G1/42
CPC分类号： A61N5/103 , A61N5/1036 , A61N5/1042 , A61N5/1047
摘要： A radiotherapeutic apparatus comprises a source able to emit a beam of therapeutic radiation along a beam axis, a multi-leaf collimator arranged to collimate the beam to a desired shape, wherein the source is rotateable about a rotation axis that is substantially orthogonal and intersects with the beam axis thereby to describe an arc around that axis, and further comprises a control means able to control the dose/time rate of the source, the rotation speed of the source, and the multi-leaf collimator position. The control means is arranged to receive a treatment plan in which the arc is divided into a plurality of notional arc-segments, and specifying the total dose for the arc-segment and a start and end MLC position. It then controls the source in accordance with that plan over an first arc-segment such that at least one of the rotation speed and dose rate are constant and the multi-leaf collimator changes shape, and a second arc segment such that at least one of the rotation speed and dose rate are constant at a level different to the constant level adopted during the first arc-segment. It achieves this by calculating the total time required for the arc segment for a plurality of factors including an MLC leaf movement from a prescribed position at the start of the arc-segment to a prescribed position at the end of the arc-segment, at a maximum leaf speed, rotation of the source from the start to the end of the arc-segment at a maximum source rotation speed, delivery of the dose at a maximum dose rate per time, selecting the factor dictating the longest time, and controlling the apparatus so that the selected factor operates at its respective maximum and the remaining factors are operated at a reduced rate selected to match that longest time.
摘要翻译：放射治疗装置包括能够沿着光束轴发射治疗辐射束的源，多叶准直器，其布置成将光束准直到期望的形状，其中源可绕旋转轴线旋转，旋转轴线基本正交并与光束轴由此描述围绕该轴的弧，并且还包括能够控制源的剂量/时间速率，源的旋转速度和多叶准直器位置的控制装置。控制装置被设置成接收处理计划，其中弧被分成多个概念弧段，并且指定弧段的总剂量以及开始和结束MLC位置。然后，它根据该计划在第一弧段上控制源，使得旋转速度和剂量率中的至少一个恒定，并且多叶准直器改变形状;以及第二弧段，使得至少一个旋转速度和剂量率恒定在与第一弧段期间采用的恒定水平不同的水平。它通过计算多个因素所需的总弧时间来实现，其包括从弧段开始处的规定位置到弧段末端处的规定位置的MLC叶移动，最大叶片速度，源以最大源旋转速度从弧段的开始到结束的旋转，以每时间最大剂量率递送剂量，选择规定最长时间的因子，以及控制装置使得所选择的因子在其各自的最大值下操作，并且剩余因子以选择以匹配最长时间的降低的速率操作。

7. 发明授权

US08139718B2 Radiotherapy apparatus 有权
标题翻译：放射治疗仪
公开(公告)号：US08139718B2
公开(公告)日：2012-03-20
申请号：US12740291
申请日：2007-10-30
申请人： Kevin Brown , Ralph Streamer , Duncan Bourne
发明人： Kevin Brown , Ralph Streamer , Duncan Bourne
IPC分类号： G21K1/04 , A61N5/10
CPC分类号： A61N5/1049 , A61N5/1042 , A61N5/1067 , A61N2005/1061
摘要： Realtime beam shape adjustment in response to (for example) online CT scanning of a patient during treatment is assisted by the radiotherapy apparatus comprising a source adapted to emit a beam of therapeutic radiation, a collimator for delimiting the radiation beam, the collimator comprising a plurality of leaves arranged alongside each other and be moveable longitudinally so that the tips of the leaves define a variable edge of the collimator, the leaves being mounted on a support that is moveable laterally with respect to the leaves. In this way, movements of the tumor that are perpendicular to the direction of leaf motion can be accommodated by simply moving the collimator bodily so as to accommodate this. It is preferred that the apparatus also includes a control means adapted to receive information as to the location of the target volume, and, on the basis of that information, control the longitudinal positions of the leaves and the lateral position of the support. It is also preferred that the support tilts as it moves laterally along a path. This can be achieved, by example, by bearings that are moveable on suitable guides, or by mounting the support on a plurality of pivot arms of unequal lengths. The lengths of such pivot arms can be adjusted as necessary.
摘要翻译：响应于（例如）治疗期间患者的在线CT扫描的实时波束形状调整由包括适于发射治疗辐射束的源的放射治疗装置辅助，用于限定辐射束的准直器，准直器包括多个的叶片彼此并排设置并且可纵向移动，使得叶片的尖端限定准直器的可变边缘，叶片安装在相对于叶片横向移动的支撑件上。以这种方式，垂直于叶片运动方向的肿瘤的运动可以通过简单地移动准直器以适应这一点来适应。优选地，该装置还包括适于接收关于目标体积的位置的信息的控制装置，并且基于该信息控制叶片的纵向位置和支撑件的横向位置。还优选的是，当支撑件沿着路径横向移动时，支撑件倾斜。这可以通过例如通过在合适的导轨上可移动的轴承，或者通过将支撑件安装在不等长度的多个枢轴臂上来实现。这种枢转臂的长度可以根据需要进行调节。

8. 发明申请

US20100329422A1 Radiotherapeutic apparatus 有权
公开(公告)号：US20100329422A1
公开(公告)日：2010-12-30
申请号：US12739206
申请日：2007-10-24
申请人： Kevin Brown , Ralph Streamer , Paul Boxall , Duncan Bourne , Christopher James Gibson
发明人： Kevin Brown , Ralph Streamer , Paul Boxall , Duncan Bourne , Christopher James Gibson
IPC分类号： A61N5/10
CPC分类号： A61N5/103 , A61N5/1036 , A61N5/1042
摘要： A radiotherapeutic apparatus comprises a source able to emit a beam of therapeutic radiation along a beam axis, a multi-leaf collimator arranged to collimate the beam to a desired shape, wherein the source is rotateable about a rotation axis that is substantially orthogonal and intersects with the beam axis thereby to describe an arc around that axis, and further comprises a control means able to control the dose/time rate of the source, the rotation speed of the source, and the multi-leaf collimator position. The control means is arranged to receive a treatment plan in which the arc is divided into a plurality of notional arc-segments, and specifying the total dose for the arc-segment and a Start and end MLC position. It then controls the source in accordance with that plan over an first arc-segment such that at least one of the rotation speed and dose rate are constant and the multi-leaf collimator changes shape, and a second arc segment such that at least one of the rotation speed and dose rate are constant at a level different to the constant level adopted during the first arc-segment. It achieves this by calculating the total time required for the arc segment for a plurality of factors including an MLC leaf movement from a prescribed position at the start of the arc-segment to a prescribed position at the end of the arc-segment, at a maximum leaf speed, rotation of the source from the start to the end of the arc-segment at a maximum source rotation speed, delivery of the dose at a maximum dose rate per time, selecting the factor dictating the longest time, and Controlling the apparatus so that the selected factor operates at its respective maximum and the remaining factors are operated at a reduced rate selected to match that longest time, wherein the total time required for the arc segment for at least one factor relating to a moving geometry item is the greater of (a); a time required to complete the segment at a continuous defined upper speed for the geometry item and (b) a time required to accelerate the geometry item until it is travelling at the defined upper speed. Generally, the time required to accelerate the geometry item to the defined upper speed will include a time to accelerate the geometry item to that speed, and a further time to accelerate the geometry item beyond that speed and subsequently decelerate it until travelling at that speed.

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