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    RADIOTHERAPEUTIC SYSTEM AND RADIOTHERAPEUTIC DOSE DISTRIBUTION MEASURING METHOD
    3.
    发明申请
    RADIOTHERAPEUTIC SYSTEM AND RADIOTHERAPEUTIC DOSE DISTRIBUTION MEASURING METHOD 有权
    放射治疗系统和放射治疗剂量分布测量方法

    公开(公告)号：US20090161818A1

    公开(公告)日：2009-06-25

    申请号：US12336919

    申请日：2008-12-17

    申请人： Yasuo Sakurai ,  Shigeharu Ohyu ,  Kyojiro Nambu ,  Motoji Haragashira ,  Masahiro Kumakura ,  Mariko Shibata ,  Katsuhiko Fujimoto ,  Yoichi Takada

    发明人： Yasuo Sakurai ,  Shigeharu Ohyu ,  Kyojiro Nambu ,  Motoji Haragashira ,  Masahiro Kumakura ,  Mariko Shibata ,  Katsuhiko Fujimoto ,  Yoichi Takada

    IPC分类号： A61B6/00 ,  A61N5/10

    CPC分类号： A61N5/1048 ,  A61B6/027 ,  A61B6/4291

    摘要： A detector having a collimator in a position at a specific angle with respect to a therapeutic X-ray beam is mounted to selectively detect only scattering radiation in the direction. To three-dimensionally obtain a distribution of places where scattering occurs in a patient body, a detector is rotated during irradiation and scattering radiation is measured from all of directions. After that, a reconstructing process is performed, and a distribution of occurrence of scattering radiation in the subject is three-dimensionally imaged. Since angles and amounts of X-rays scattered by Compton scattering are known theoretically, if scattering radiation at a certain angle can be detected, the number of scattering radiation at other angles can be also estimated. On the basis of the theory, images of distribution of scattering radiation sources are converted to images of distribution of absorption of radiation.

    摘要翻译： 具有相对于治疗性X射线束在特定角度的准直器的检测器被安装成选择性地仅检测该方向上的散射辐射。 为了三维地获得在患者体内发生散射的位置的分布，在照射期间旋转检测器并且从所有方向测量散射辐射。 之后，进行重建处理，并且对被摄体的散射辐射的发生分布进行三维成像。 由于通过康普顿散射散射的X射线的角度和数量在理论上是已知的，因此如果能够检测到某一角度的散射辐射，则可以估计其他角度的散射辐射的数量。 在理论的基础上，将散射辐射源分布的图像转换为辐射吸收分布的图像。

    Radiotherapeutic system and radiotherapeutic dose distribution measuring method
    6.
    发明授权
    Radiotherapeutic system and radiotherapeutic dose distribution measuring method 有权
    放射治疗系统和放射治疗剂量分布测量方法

    公开(公告)号：US08107589B2

    公开(公告)日：2012-01-31

    申请号：US12336919

    申请日：2008-12-17

    申请人： Yasuo Sakurai ,  Shigeharu Ohyu ,  Kyojiro Nambu ,  Motoji Haragashira ,  Masahiro Kumakura ,  Mariko Shibata ,  Katsuhiko Fujimoto ,  Yoichi Takada

    发明人： Yasuo Sakurai ,  Shigeharu Ohyu ,  Kyojiro Nambu ,  Motoji Haragashira ,  Masahiro Kumakura ,  Mariko Shibata ,  Katsuhiko Fujimoto ,  Yoichi Takada

    IPC分类号： A61N5/10

    CPC分类号： A61N5/1048 ,  A61B6/027 ,  A61B6/4291

    摘要： A detector having a collimator in a position at a specific angle with respect to a therapeutic X-ray beam is mounted to selectively detect only scattering radiation in the direction. To three-dimensionally obtain a distribution of places where scattering occurs in a patient body, a detector is rotated during irradiation and scattering radiation is measured from all of directions. After that, a reconstructing process is performed, and a distribution of occurrence of scattering radiation in the subject is three-dimensionally imaged. Since angles and amounts of X-rays scattered by Compton scattering are known theoretically, if scattering radiation at a certain angle can be detected, the number of scattering radiation at other angles can be also estimated. On the basis of the theory, images of distribution of scattering radiation sources are converted to images of distribution of absorption of radiation.

    摘要翻译： 具有相对于治疗性X射线束在特定角度的准直器的检测器被安装成选择性地仅检测该方向上的散射辐射。 为了三维地获得在患者体内发生散射的位置的分布，在照射期间旋转检测器并且从所有方向测量散射辐射。 之后，进行重建处理，并且对被摄体的散射辐射的发生分布进行三维成像。 由于通过康普顿散射散射的X射线的角度和数量在理论上是已知的，因此如果能够检测到某一角度的散射辐射，则可以估计其他角度的散射辐射的数量。 在理论的基础上，将散射辐射源分布的图像转换为辐射吸收分布的图像。