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    • 90. 发明授权
    • Apparatus and method for robotic radiosurgery beam geometry quality assurance
    • 机器人放射外科手术器械和方法几何质量保证
    • US07780349B2
    • 2010-08-24
    • US12006629
    • 2008-01-03
    • Xiaodong Wu
    • Xiaodong Wu
    • A61B6/08A61N5/10
    • A61N5/1048A61B34/20A61B34/25A61B90/10A61B90/39A61B2017/00725A61B2090/101A61B2090/363A61N5/1042
    • A method and apparatus for quality assurance of beam geometry of robotic radiosurgery systems. The apparatus comprises two or more radio-opaque markers set at a fixed distance from each other and contained in a housing, which is assembled to a collimator fixture for attachment to the collimator interface of the LINAC of a robotic radiosurgery system. A treatment plan is generated to position the LINAC to a series of pre-defined radiation beam orientations, then a simulation of the treatment is carried out, and radiographic images are taken at each LINAC position. The coordinates of the radio-opaque markers obtained from the images are used to determine beam orientation by calculating their directional cosines, the beam off-axis error and the deviation of the radiation source to iso-center distance (SAD). The imaging system is independently calibrated and the quantitative beam geometric information is used to adjust beam geometry for quality assurance.
    • 一种用于机器人放射外科系统的束几何质量保证的方法和装置。 该装置包括两个或更多个放射线不透明标记,其彼此固定并且容纳在壳体中,该壳体被组装到准直器夹具上,用于附接到机器人放射外科系统的LINAC的准直器界面。 产生处理计划以将LINAC定位成一系列预定义的辐射束取向,然后进行处理的模拟,并且在每个LINAC位置拍摄放射照相图像。 使用从图像获得的不透射线标记的坐标通过计算它们的方向余弦,光束离轴误差和辐射源与等中心距离的偏差(SAD)来确定波束取向。 成像系统被独立校准,并且定量光束几何信息用于调整光束几何形状以确保质量。