Megavoltage computed tomography during radiotherapy
    5.
    发明授权
    Megavoltage computed tomography during radiotherapy 有权
    放射治疗期间的Megavoltage计算机断层扫描

    公开(公告)号:US06618467B1

    公开(公告)日:2003-09-09

    申请号:US09913084

    申请日:2001-08-09

    IPC分类号: A61N510

    摘要: Reduced dose megavoltage CT images are obtained using low flux data resulting from leakage through modulating shutters and/or collected by other means and augmented by incomplete high flux data collected during radiation therapy. The ability to construct tomographic projection sets from significantly varying flux rate data is provided by the use of air scans windowed to account for variations in mechanical leaf movement. These methods are also provide a means of imaging the patient entirely during radiation therapy treatments without any additional scan time.

    摘要翻译: 使用由通过调制百叶窗泄漏和/或通过其他方式收集而产生的低通量数据获得减少的剂量兆伏特CT图像,并且通过在放射治疗期间收集的不完全高通量数据增加。 通过使用窗口化的空气扫描来解释机械叶片运动的变化,提供了从显着变化的通量速率数据构建断层摄影投影集的能力。 这些方法还提供了在放射治疗治疗期间完全对患者进行成像的手段,而没有任何额外的扫描时间。

    Delivery modification system for radiation therapy
    6.
    发明授权
    Delivery modification system for radiation therapy 有权
    辐射治疗交付修改系统

    公开(公告)号:US06385286B1

    公开(公告)日:2002-05-07

    申请号:US09582538

    申请日:2000-06-28

    IPC分类号: A61N510

    摘要: Radiotherapy controlling, treatment sinograms may be directly modified to correct for real time motion of patients or portions of patients resulting from physiological or other activity. Precalculated partial sinograms representing treatments of portions of a patient may be assembled to obtain a treatment sinogram for the entire patient without delay from conventional planning software. The partial sinograms are modified as representations of their corresponding portions and manipulated to conform to the particular dimensions of an actual patient. This constructed sinogram may be used directly or as a starting point for iterative optimization.

    摘要翻译: 可以直接修改放射治疗控制,治疗心尖图以纠正由生理或其他活动引起的患者或部分患者的实时运动。 可以组装代表患者部分的治疗的预先计算的部分正弦图,以便从传统的规划软件中不间断地获得整个患者的治疗心律图。 部分正弦图被修改为其对应部分的表示,并被操纵以符合实际患者的特定尺寸。 该构造的正弦图可以直接使用或作为迭代优化的起点。