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公开(公告)号：US5351280A
公开(公告)日：1994-09-27
申请号：US71743
申请日：1993-06-09
IPC分类号： A61N5/10 , C08F234/02 , G21K1/04 , G21K5/04 , G21K5/10
CPC分类号： A61N5/1042 , A61N5/1048 , C08F234/02 , G21K1/04 , G21K1/046 , G21K5/04 , G21K5/10
摘要： A radiation therapy apparatus includes a multi-leaf attenuator having a first plurality of radiation attenuating leaves and a second plurality of radiation attenuating leaves. The first plurality of leaves is spaced with gaps between adjacent leaves within a radiation beam so that the leaves and the gaps therebetween divide the radiation beam into rays. The second plurality of leaves is disposed directly under gaps in the first plurality of leaves so that each ray of the beam can be occluded by a leaf in either the first or second plurality. The gaps eliminate interference between leaves; the staggering prevents radiation leakage between leaves. Each leaf, in both groups, may be moved between a first open state on one side of the beam, a closed state within the beam thus occluding one ray of the beam, and a second open state on the other side of the beam. By controlling the duty cycle of the leaves between the open and closed states, each ray of the beam may be effectively and individually attenuated over a range of intensities. Attenuating the motion between two open states provides more even radiation exposure.
摘要翻译： 放射治疗装置包括具有第一多个辐射衰减叶片和第二多个辐射衰减叶片的多叶衰减器。 第一组多个叶片与辐射束内的相邻叶片之间的间隙间隔开，使得叶片和其间的间隙将辐射束分成射线。 第二多个叶片直接设置在第一多个叶片中的间隙下方，使得束的每个射线可以被第一或第二多个叶片中的叶片遮挡。 差距消除叶间的干扰; 惊人的防止叶片之间的辐射泄漏。 两组中的每个叶片可以在梁的一侧上的第一打开状态之间移动，光束内的闭合状态，从而遮挡一束光束，在光束的另一侧上移动第二打开状态。 通过控制叶片在打开和关闭状态之间的占空比，梁的每个射线可以在强度范围内被有效且单独衰减。 衰减两个开放状态之间的运动提供了更均匀的辐射照射。
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公开(公告)号：US5661773A
公开(公告)日：1997-08-26
申请号：US477055
申请日：1995-06-07
CPC分类号： A61N5/1042 , G21K1/04 , G21K1/046
摘要： A human interface to be used with irradiation machine in a computed tomography machine wherein x-ray computed tomography images are individually display on a computer screen and an operator uses a manual cursor control device to trace various irradiation zones on the image, identify desired dose within each zone, verify the accuracy of the therapy treatment plan prior to an irradiation session, and verify irradiation delivered after a therapy treatment session.
摘要翻译： 在计算机断层摄影机中与照射机一起使用的人机接口，其中X射线计算机断层摄影图像被分别显示在计算机屏幕上，并且操作者使用手动光标控制装置来跟踪图像上的各种照射区域， 每个区域，在照射会话之前验证治疗计划的准确性，并验证治疗治疗后的辐射。
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公开(公告)号：US5625663A
公开(公告)日：1997-04-29
申请号：US514366
申请日：1995-08-11
摘要： The note path of a banknote validator has a U-shaped transverse cross section. A transverse strip of the note path is illuminated by light from a light transmitting station by means of a unitary light guide which has an arcuate portion conforming to the transverse cross section of the note path. Light reflected from a banknote within the note path, is captured by the light guide and guided to a light receiving station. The light guide is shaded such that a transverse strip of the note path is substantially evenly illuminated. The U-shape of the note path also assists the insertion of notes into the validator, as an inserted note is used to bow during insertion thereby increasing its rigidity.
摘要翻译： 放射治疗装置包括具有多个叶片的补偿器，用于将辐射束分成射线，每个辐射束可以通过控制每个叶片处于打开和关闭状态的时间的比例在衰减范围内被有效地和单独地衰减 。 补偿器用于补偿辐射束的不均匀源能量密度分布。 在第二实施例中，放射治疗装置包括用于使辐射线上的电子流振荡的振荡装置，使得在振荡平面内从目标发出的辐射场随时间均匀。 本发明消除了对光束平坦化滤光器的需要，从而更有效地使用辐射束的能量。
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公开(公告)号：US5394452A
公开(公告)日：1995-02-28
申请号：US074185
申请日：1993-06-09
IPC分类号： A61N5/10 , C08F234/02 , G21K1/04 , G21K5/04 , G21K5/10
CPC分类号： A61N5/1042 , A61N5/1048 , C08F234/02 , G21K1/04 , G21K1/046 , G21K5/04 , G21K5/10
摘要： A radiation therapy apparatus includes a compensator with moving leaves to attenuate a radiation beam and a compensator verification system to determine if the attenuating leaves are moving in accordance with desired position signals. Two radiation intensity monitoring chambers, one chamber on either side of a patient within a radiation beam, produce beam fluence data used by a computer to construct radiation absorption images and to evaluate the functionality of the compensator. The absorption image can be used for both radiation dose verification and planning of suitable subsequent therapy sessions.
摘要翻译： 辐射治疗装置包括具有移动叶片以补偿辐射束的补偿器和补偿器验证系统，以根据期望的位置信号来确定衰减叶片是否正在移动。 两个辐射强度监测室，辐射束内患者任一侧的一个腔室产生计算机使用的波束注量数据，以构建辐射吸收图像并评估补偿器的功能。 吸收图像可以用于辐射剂量验证和规划合适的后续治疗会话。
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公开(公告)号：US5724400A
公开(公告)日：1998-03-03
申请号：US591335
申请日：1996-01-25
摘要： A radiation therapy machine has a constrained angular freedom to produce a beam only within a gantry plane. A radiation shield may be stationary and not attached to the gantry or rotating to always block the primary beam. The constrained motion reduces the risk of patient/gantry collision and provides for extremely accurate radiation therapy planning. The therapy machine, so constrained, may include a tomographic imaging system on a single gantry. The two systems cooperate and employ many of the same hardware components to both plan and carry out therapy sessions in which irregularly shaped treatment volumes are accurately irradiated while tissue surrounding those volumes is minimally irradiated.
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公开(公告)号：US5548627A
公开(公告)日：1996-08-20
申请号：US71742
申请日：1993-06-09
CPC分类号： A61B6/032 , A61B6/00 , A61N5/01 , A61N5/1042 , G21K1/04 , G21K1/046 , G21K5/04 , G21K5/10 , A61N2005/1061 , A61N5/1067
摘要： A radiation therapy machine has a constrained angular freedom to produce a beam only within a gantry plane. A radiation shield may be stationary and not attached to the gantry or rotating to always block the primary beam. The constrained motion reduces the risk of patient/gantry collision and provides for extremely accurate radiation therapy planning. The therapy machine, so constrained, may include a tomographic imaging system on a single gantry. The two systems cooperate and employ many of the same hardware components to both plan and carry out therapy sessions in which irregularly shaped treatment volumes are accurately irradiated while tissue surrounding those volumes is minimally irradiated.
摘要翻译： 辐射治疗机器具有受限的角度自由度，仅在机架平面内产生束。 辐射屏蔽件可以是静止的并且不附接到台架或旋转以总是阻挡主梁。 受约束的运动减少患者/龙门架碰撞的风险，并提供非常精确的放射治疗计划。 治疗机器受到限制，可以包括在单个机架上的断层成像系统。 两个系统协调并采用了许多相同的硬件组件来规划和执行治疗阶段，其中不规则形状的治疗体积被精确地照射，同时围绕这些体积的组织被最少地照射。
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公开(公告)号：US5528650A
公开(公告)日：1996-06-18
申请号：US191243
申请日：1994-02-02
CPC分类号： A61B6/032 , A61B6/00 , A61N5/01 , A61N5/1042 , G21K1/04 , G21K1/046 , G21K5/04 , G21K5/10 , A61N2005/1061 , A61N5/1067
摘要： A radiation therapy apparatus includes a compensator having a plurality of leaves to divide the radiation beam into rays each of which may be effectively and individually attenuated over a range of attenuations by controlling the duty cycle of the leaves position between the open and closed states. An apparatus for controlling the compensator accounts for scattering of radiation through the deconvolution of a terma map and calculates a sinogram for controlling the compensator at a variety of angles about a patient using iterated forward and back projections efficiently calculated in frequency space.
摘要翻译： 辐射治疗装置包括具有多个叶片的补偿器，以将辐射束分成射线，每个叶片可以通过控制打开和关闭状态之间的叶片位置的占空比在一定范围的衰减中被有效地和单独地衰减。 用于控制补偿器的装置考虑了通过术语映射的去卷积的辐射散射，并且计算用于使用在频率空间中有效计算的迭代前向和后向投影以关于患者的各种角度来控制补偿器的正弦图。
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公开(公告)号：US5442675A
公开(公告)日：1995-08-15
申请号：US071741
申请日：1993-06-09
CPC分类号： A61B6/032 , A61B6/00 , A61N5/01 , A61N5/1042 , G21K1/04 , G21K1/046 , G21K5/04 , G21K5/10 , A61N2005/1061 , A61N5/1067
摘要： A radiation therapy apparatus includes a collimator that changes the width of a fan beam of radiation as a treatment volume of the patient crosses the volume exposed by the beam so as to minimize the irradiation of healthy tissue at the front and back of the tumor. The width of the fan beam may also be controlled to treat multiple adjacent, similar slices of the patient at one time reducing the treatment duration.
摘要翻译： 放射线治疗装置包括准直仪，其随着患者的治疗体积横过辐射束的体积而改变辐射束的宽度，以使肿瘤前后的健康组织的照射最小化。 也可以控制扇形束的宽度以一次减少治疗持续时间来治疗患者的多个相邻的类似切片。
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公开(公告)号：US5317616A
公开(公告)日：1994-05-31
申请号：US854521
申请日：1992-03-19
CPC分类号： A61B6/032 , A61B6/00 , A61N5/01 , A61N5/1042 , G21K1/04 , G21K1/046 , G21K5/04 , G21K5/10 , A61N2005/1061 , A61N5/1067
摘要： A radiation therapy apparatus includes a compensator having a plurality of leaves to divide the radiation beam into rays each of which may be effectively and individually attenuated over a range of attenuations by controlling the duty cycle of the leaves position between the open and closed states. An apparatus for controlling the compensator accounts for scattering of radiation through the deconvolution of a terma map and calculates a sinogram for controlling the compensator at a variety of angles about a patient using iterated forward and back projections efficiently calculated in frequency space.
摘要翻译： 辐射治疗装置包括具有多个叶片的补偿器，以将辐射束分成射线，每个叶片可以通过控制打开和关闭状态之间的叶片位置的占空比在一定范围的衰减中被有效地和单独地衰减。 用于控制补偿器的装置考虑了通过术语映射的去卷积的辐射散射，并且计算用于使用在频率空间中有效计算的迭代前向和后向投影以关于患者的各种角度来控制补偿器的正弦图。
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