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    • 7. 发明授权
    • Detached collimator apparatus for radiation therapy
    • 用于放射治疗的分离准直仪
    • US4880985A
    • 1989-11-14
    • US253597
    • 1988-10-05
    • Douglas Jones
    • Douglas Jones
    • A61N5/10G21K1/02H05H7/10
    • G21K1/02A61N5/10H05H7/10
    • A collimator apparatus is disclosed for directing a high energy electron beam from an accelerator through an exit aperture and through a spaced and non-connected collimator tube in juxtaposition with a target area in a patient. The collimator tube is adjustably positioned and positionally maintained by jig structure supported independently of the accelerator structure. A rod type alignment device is releasably positionable in the collimator tube to define alignment of that tube by a novel method using traditional isocentric motions of a patient couch and accelerator gantry. Collimator tubes of varying diameters and exit configurations may be selectively utilized to accurately conform an electron beam to a particular target area and provide uniform irradiation over that target area.
    • 公开了一种用于将来自加速器的高能电子束引导通过出口孔并通过与病人的目标区域并置的间隔的和不连接的准直管来引导的准直仪装置。 准直管可以通过独立于加速器结构支撑的夹具结构可调地定位和定位。 杆式对准装置可释放地定位在准直管中,以通过使用患者沙发和加速器架的传统等中心运动的新颖方法来限定该管的对准。 可以选择性地利用不同直径和出口构型的准直器管,以精确地将电子束符合到特定目标区域,并在该目标区域上提供均匀的照射。