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    • 1. 发明授权
    • Methods and computer readable medium for improved radiotherapy dosimetry planning
    • 用于改进放射治疗剂量测定规划的方法和计算机可读介质
    • US06965847B2
    • 2005-11-15
    • US09814299
    • 2001-03-21
    • Daniel E. WessolMichael W. FrandsenFloyd J. WheelerDavid W. Nigg
    • Daniel E. WessolMichael W. FrandsenFloyd J. WheelerDavid W. Nigg
    • A61M36/00A61N5/10G06F19/00G06F9/455
    • G06F19/3481A61N5/1001A61N5/1027A61N5/1031A61N2005/1034G06F19/00G06F19/3456G16H15/00G16H50/50
    • Methods and computer readable media are disclosed for ultimately developing a dosimetry plan for a treatment volume irradiated during radiation therapy with a radiation source concentrated internally within a patient or incident from an external beam. The dosimetry plan is available in near “real-time” because of the novel geometric model construction of the treatment volume which in turn allows for rapid calculations to be performed for simulated movements of particles along particle tracks therethrough. The particles are exemplary representations of alpha, beta or gamma emissions emanating from an internal radiation source during various radiotherapies, such as brachytherapy or targeted radionuclide therapy, or they are exemplary representations of high-energy photons, electrons, protons or other ionizing particles incident on the treatment volume from an external source. In a preferred embodiment, a medical image of a treatment volume irradiated during radiotherapy having a plurality of pixels of information is obtained.
    • 公开了方法和计算机可读介质,用于最终开发用于放射治疗期间照射的治疗体积的剂量测定计划,其中辐射源集中在患者内部的内部或从外部束入射。 由于处理体积的新颖的几何模型构造,剂量测定计划在近处“实时”可用,这进一步允许对沿着颗粒轨道的粒子的模拟运动进行快速计算。 颗粒是在各种放射治疗(例如近距离放射治疗或靶向放射性核素治疗)期间从内部辐射源发出的α,β或γ排放的示例性表示,或者它们是高能量光子,电子,质子或其他电离粒子入射的示例性表示 治疗量来自外部来源。 在优选实施例中,获得具有多个信息像素的放射治疗期间照射的治疗体积的医学图像。
    • 2. 发明授权
    • Methods and computer executable instructions for rapidly calculating simulated particle transport through geometrically modeled treatment volumes having uniform volume elements for use in radiotherapy
    • US06175761B1
    • 2001-01-16
    • US09063736
    • 1998-04-21
    • Michael W. FrandsenDaniel E. WessolFloyd J. Wheeler
    • Michael W. FrandsenDaniel E. WessolFloyd J. Wheeler
    • A61B600
    • A61N5/1031A61N2005/1034A61N2005/109Y10S128/92
    • Methods and computer executable instructions are disclosed for ultimately developing a dosimetry plan for a treatment volume targeted for irradiation during cancer therapy. The dosimetry plan is available in “real-time” which especially enhances clinical use for in vivo applications. The real-time is achieved because of the novel geometric model constructed for the planned treatment volume which, in turn, allows for rapid calculations to be performed for simulated movements of particles along particle tracks there through. The particles are exemplary representations of neutrons emanating from a neutron source during BNCT. In a preferred embodiment, a medical image having a plurality of pixels of information representative of a treatment volume is obtained. The pixels are: (i) converted into a plurality of substantially uniform volume elements having substantially the same shape and volume of the pixels; and (ii) arranged into a geometric model of the treatment volume. An anatomical material associated with each uniform volume element is defined and stored. Thereafter, a movement of a particle along a particle track is defined through the geometric model along a primary direction of movement that begins in a starting element of the uniform volume elements and traverses to a next element of the uniform volume elements. The particle movement along the particle track is effectuated in integer based increments along the primary direction of movement until a position of intersection occurs that represents a condition where the anatomical material of the next element is substantially different from the anatomical material of the starting element. This position of intersection is then useful for indicating whether a neutron has been captured, scattered or exited from the geometric model. From this intersection, a distribution of radiation doses can be computed for use in the cancer therapy. The foregoing represents an advance in computational times by multiple factors of time magnitudes.