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    • 95. 发明申请
    • TRAJECTORY OPTIMIZATION METHOD
    • TRAJECTORY优化方法
    • WO2010025115A1
    • 2010-03-04
    • PCT/US2009/054807
    • 2009-08-24
    • VARIAN MEDICAL SYSTEMS TECHNOLOGIES, INC.NORD, JannePELTOLA, Jarkko
    • NORD, JannePELTOLA, Jarkko
    • A61N5/10H05G1/42
    • A61N5/1031A61N5/1047G06F19/00G06Q50/22
    • A method for determining a radiation treatment plan includes defining a part of a treatment control points, defining dose calculation points, calculating dose in the dose calculation points, and changing a number of the dose calculation points. A method for determining a radiation treatment plan includes medeling a first part of a treatment plan using a fluence map, and modeling a second part of the treatment plan using a first machine parameter. A method for determining a radiation treatment plan includes determining a plurality of dose calculation points, determining a level of complexity of fluence for one or more machine marameters for one of the plurality of dose calculation points based on the determined level of complexity.
    • 用于确定放射治疗计划的方法包括定义治疗控制点的一部分,限定剂量计算点,计算剂量计算点中的剂量,以及改变剂量计算点的数量。 用于确定辐射治疗计划的方法包括使用注量图来介导治疗计划的第一部分,并且使用第一机器参数对治疗计划的第二部分进行建模。 一种用于确定辐射治疗计划的方法包括:基于所确定的复杂程度,确定多个剂量计算点,确定所述多个剂量计算点之一的一个或多个机器参数的注量度的复杂程度。
    • 96. 发明申请
    • RADIOTHERAPEUTIC APPARATUS
    • 放射治疗仪
    • WO2006095137A1
    • 2006-09-14
    • PCT/GB2006/000725
    • 2006-03-01
    • ELEKTRA AB (PUBL)BROWN, Kevin
    • BROWN, Kevin
    • A61N5/10
    • A61N5/1042A61N5/1047
    • The present invention seeks to provide a radiotherapeutic apparatus that mitigates the various problems found in the techniques such as tomotherapy, IMAT, IMRT and the like. It provides a radiotherapeutic apparatus comprising a source of radiation whose output is collimated by a multi-leaf collimator, and a patient support, the source being rotateable around the support and the support being translatable along the axis of rotation, thereby to move the source helically relative to a patient on the support. The leaves of the MLC are preferably oriented orthogonal to the axis of rotation, to simplify computation of the dose distribution. The apparatus thus moves the patient on the patient support system along the axis of rotation, in the longitudinal direction. Thus, the device has an effectively unlimited treatable volume in the longitudinal direction and avoids the limitations of IMAT and IMRT techniques whilst enabling the use of thin MLC leaves to give a high longitudinal resolution. The apparatus is preferably combined with an optimisation system providing a computational service similar to that provided for IMAT and IMRT devices. Essentially the same computational techniques could be used, with appropriate changes to the input conditions and characteristic equations. The long aperture length (compared to tomotherapy) makes the radiation delivery efficient and therefore the delivery of high doses a practicality; hypofractionation and radiosurgery therefore become possible over large treatable volumes.
    • 本发明寻求提供减轻诸如tomotherapy,IMAT,IMRT等技术中发现的各种问题的放射治疗装置。 它提供了一种放射治疗装置,其包括辐射源,其输出由多叶准直器准直,以及患者支架,该源可围绕支撑件旋转,支撑件可沿旋转轴线平移, 相对于患者的支持。 MLC的叶优选地定向为与旋转轴正交,以简化剂量分布的计算。 因此,该装置使患者沿纵向方向沿旋转轴线移动患者支撑系统。 因此,该装置在纵向上具有有效的无限可处理体积,并避免了IMAT和IMRT技术的限制,同时能够使用薄的MLC叶片提供高的纵向分辨率。 该装置优选地与提供与为IMAT和IMRT设备提供的计算服务类似的优化系统组合。 可以使用基本相同的计算技术,适当地改变输入条件和特征方程。 长孔径长度(与tomotherapy相比)使得放射线递送效率高,因此高剂量的递送具有实用性; 因此,低分割和放射外科可以在大的可治疗体积上成为可能。