Dynamic splitting of Gaussian pencil beams in heterogeneity-correction algorithms for radiotherapy with heavy charged particles
نویسندگان
چکیده
منابع مشابه
Dynamic splitting of Gaussian pencil beams in heterogeneity-correction algorithms for radiotherapy with heavy charged particles.
The pencil-beam algorithm is valid only when elementary Gaussian beams are small enough compared to the lateral heterogeneity of a medium, which is not always true in actual radiotherapy with protons and ions. This work addresses a solution for the problem. We found approximate self-similarity of Gaussian distributions, with which Gaussian beams can split into narrower and deflecting daughter b...
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Theories on multiple scattering of charged particles are reviewed and reorganized to construct an accurate, simple, and efficient Gaussian-beam transport model for radiotherapy with protons and heavier ions. The Highland formula for scattering angle is modified to a scattering power formula to be used within the Fermi-Eyges theory for particle transport in the presence of heterogeneity. Semi-an...
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ژورنال
عنوان ژورنال: Physics in Medicine and Biology
سال: 2009
ISSN: 0031-9155,1361-6560
DOI: 10.1088/0031-9155/54/7/010