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    Multileaf collimator for electron radiotherapy
    1.
    发明申请
    Multileaf collimator for electron radiotherapy 有权
    用于电子放射治疗的多叶准直器

    公开(公告)号：US20090001295A1

    公开(公告)日：2009-01-01

    申请号：US11823468

    申请日：2007-06-26

    申请人： Stanley W. Johnsen

    发明人： Stanley W. Johnsen

    IPC分类号： G21K1/02

    CPC分类号： G21K1/04 ,  A61N5/1045 ,  A61N2005/1089 ,  G21K1/046

    摘要： A flexible multi-leaf collimator for electron radiotherapy is provided, where the leaves are not a single rigid component, but are configured in a manner that curves away from the patient to provide greater clearance. The invention includes a plurality of flexible assemblies, at least one guide supporting the assemblies, and a plurality of assembly drivers. The driver engages the assembly and moves the assembly along the guide. The assembly has an extended state and a retracted state relative to the guide, such that when in the extended state the assembly is held in the aperture plane and when in the retracted state the assembly conforms along the guide. When in the extended state the assemblies are disposed as a treatment aperture.

    摘要翻译： 提供了一种用于电子放射治疗的柔性多叶准直器，其中叶片不是单个刚性部件，而是以远离患者弯曲以提供更大间隙的方式配置。 本发明包括多个柔性组件，至少一个支撑组件的引导件和多个组件驱动器。 驱动器接合组件并沿着导轨移动组件。 组件相对于引导件具有延伸状态和缩回状态，使得当处于伸展状态时，组件被保持在孔平面中，并且当处于缩回状态时，组件沿着引导件顺应。 当处于伸展状态时，组件被设置为处理孔。

    Method of measuring total ionization current in a segmented ionization chamber
    3.
    发明授权
    Method of measuring total ionization current in a segmented ionization chamber 失效
    测量离子化室中总放电电流的方法

    公开(公告)号：US5072123A

    公开(公告)日：1991-12-10

    申请号：US518341

    申请日：1990-05-03

    申请人： Stanley W. Johnsen

    发明人： Stanley W. Johnsen

    IPC分类号： G01T1/185

    CPC分类号： G01T1/185

    摘要： Information on radiation dosage from segmented ionization chambers can be incomplete due to the existence of insensitive regions of the chamber. By measuring the total current to the high voltage power supply, the total ionization current including that in the insensitive areas can be estimated, thereby providing a measure of the dosage to the insensitive areas.

    摘要翻译： 由于腔室的不敏感区域的存在，分段电离室的辐射剂量信息可能不完整。 通过测量到高压电源的总电流，可以估计包括不敏感区域中的总电离电流，从而提供对不敏感区域的剂量的量度。

    Method and apparatus for producing radioactive materials for medical treatment using x-rays produced by an electron accelerator
    4.
    发明授权
    Method and apparatus for producing radioactive materials for medical treatment using x-rays produced by an electron accelerator 失效
    使用由电子加速器产生的x射线来生产用于医疗的放射性物质的方法和装置

    公开(公告)号：US06907106B1

    公开(公告)日：2005-06-14

    申请号：US09379439

    申请日：1999-08-23

    申请人： Raymond D McIntyre ,  Stanley W Johnsen ,  Marcel Marc ,  Michelangelo Delfino ,  Edward Seppi

    发明人： Raymond D McIntyre ,  Stanley W Johnsen ,  Marcel Marc ,  Michelangelo Delfino ,  Edward Seppi

    IPC分类号： G21G1/12 ,  G21G4/08

    CPC分类号： G21G1/12 ,  G21G4/08

    摘要： An apparatus and method for irradiating target objects, especially medical stents for in vivo implantation. A linear accelerator provides a high energy electron beam that impinges upon and is received by an x-ray conversion target. The x-ray conversion target is activated by either a static or dynamically moveable electron beam to generate and emit an x-ray flux so as to efficiently intercept the target object. The x-ray flux is directed to the target object for a desired time period and is of sufficiently high energy to efficiently impart radioactive properties to the target object. Alternatively, the target object is positioned within the path of the x-ray flux or is translated within the path during irradiation. Mechanical transport assemblies such as a carousel, rotational and/or linear translator and/or movement tube system also may be provided.

    摘要翻译： 用于照射目标物体的装置和方法，特别是用于体内植入的医用支架。 线性加速器提供冲击并由X射线转换目标接收的高能电子束。 X射线转换目标由静态或动态可移动的电子束激活，以产生和发射X射线通量，以有效地拦截目标物体。 x射线通量被引导到目标物体所需的时间段，并且具有足够高的能量以有效地赋予目标物体放射性。 或者，目标物体位于X射线通量的路径内，或者在照射期间在路径内平移。 还可以提供诸如转盘，旋转和/或线性平移器和/或运动管系统之类的机械输送组件。

    In-line electron beam energy monitor and control
    5.
    发明授权
    In-line electron beam energy monitor and control 失效
    在线电子束能量监测和控制

    公开(公告)号：US4877961A

    公开(公告)日：1989-10-31

    申请号：US263084

    申请日：1988-10-26

    申请人： Raymond D. McIntyre ,  Stanley W. Johnsen

    发明人： Raymond D. McIntyre ,  Stanley W. Johnsen

    IPC分类号： H05H7/00

    CPC分类号： H05H7/00

    摘要： A beam of charged particles is scattered by a thin foil and the flux at two angles .theta..sub.1 and .theta..sub.2, is sampled to yield an exponential function of the respective energy difference, E(.theta..sub.2)-E(.theta..sub.1). For .theta..sub.1 =0.degree., a signal representative of the energy stability of the beam is obtained and compared with a reference to form an error signal for application to the accelerator for stabilizing the beam energy and/or providing an energy interlock.

    Radiation therapy system and method of using the same
    9.
    发明授权
    Radiation therapy system and method of using the same 有权
    放射治疗系统及其使用方法

    公开(公告)号：US07295649B2

    公开(公告)日：2007-11-13

    申请号：US11249619

    申请日：2005-10-13

    申请人： Stanley W. Johnsen

    发明人： Stanley W. Johnsen

    IPC分类号： A61N5/10

    CPC分类号： A61N5/103 ,  A61N5/1036 ,  A61N5/1042

    摘要： A method of using a radiation system having a multileaf collimator (“MLC”) to adjust for unevenness in the radiation emitted by the system is disclosed. By appropriately controlling the MLC in accordance with the invention the system can be operated without a flattening filter. In addition, the invention allows the system user to vary the radiation beam energy in the course of a single treatment, without the need to use or change flattening filters. A map of the uneven radiation beam intensity in the treatment area is obtained, and the map information is combined with a treatment plan to control movement of the leaves of the MLC such that each area receives the correct radiation dose.

    摘要翻译： 公开了一种使用具有多叶准直器（“MLC”）的辐射系统来调整由系统发射的辐射的不均匀性的方法。 通过根据本发明适当地控制MLC，可以在没有平坦化过滤器的情况下操作系统。 此外，本发明允许系统用户在单次处理的过程中改变辐射束能量，而不需要使用或改变平坦化滤光器。 获得处理区域中不均匀辐射束强度的图，并将地图信息与处理计划相结合，以控制MLC叶片的移动，使每个区域接收正确的辐射剂量。

    Multileaf collimator for electron radiotherapy
    10.
    发明授权
    Multileaf collimator for electron radiotherapy 有权
    用于电子放射治疗的多叶准直器

    公开(公告)号：US07642534B2

    公开(公告)日：2010-01-05

    申请号：US11823468

    申请日：2007-06-26

    申请人： Stanley W. Johnsen

    发明人： Stanley W. Johnsen

    IPC分类号： G21K1/02

    CPC分类号： G21K1/04 ,  A61N5/1045 ,  A61N2005/1089 ,  G21K1/046

    摘要： A flexible multi-leaf collimator for electron radiotherapy is provided, where the leaves are not a single rigid component, but are configured in a manner that curves away from the patient to provide greater clearance. The invention includes a plurality of flexible assemblies, at least one guide supporting the assemblies, and a plurality of assembly drivers. The driver engages the assembly and moves the assembly along the guide. The assembly has an extended state and a retracted state relative to the guide, such that when in the extended state the assembly is held in the aperture plane and when in the retracted state the assembly conforms along the guide. When in the extended state the assemblies are disposed as a treatment aperture.

    摘要翻译： 提供了一种用于电子放射治疗的柔性多叶准直器，其中叶片不是单个刚性部件，而是以远离患者弯曲以提供更大间隙的方式配置。 本发明包括多个柔性组件，至少一个支撑组件的引导件和多个组件驱动器。 驱动器接合组件并沿着导轨移动组件。 组件相对于引导件具有延伸状态和缩回状态，使得当处于伸展状态时，组件被保持在孔平面中，并且当处于缩回状态时，组件沿着引导件顺应。 当处于伸展状态时，组件被设置为处理孔。