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- Hollmark, M, 1975-, et al.
(författare)
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Influence of multiple scattering and energy loss straggling on the absorbed dose distributions of therapeutic light ion beams : I. Analytical pencil beam model.
- 2004
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Ingår i: Phys Med Biol. - : IOP Publishing. - 0031-9155 .- 1361-6560. ; 49:14, s. 3247-3265
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The lateral and longitudinal distributions of absorbed dose of broad and narrowlight ion beams in water are investigated. An analytical algorithm based on thegeneralized Fermi–Eyges theory is developed and used to calculate the effectsof multiple scattering and range straggling on the dose distribution of light ionbeams in water. A first-order Gaussian multiple scattering and energy lossstraggling approach is generally sufficiently accurate for describing the lateraland longitudinal spread of the Bragg peak and the associated energy depositiondistribution of therapeutic light ion beams at ranges of clinical interest. Nuclearreactions are not taken into account in this study. The analytical algorithmgiven in the present study allows an accurate description of the radial spreadand the range straggling of light ions traversing matter. A verification of thisapproach by comparing with experimental data, Monte Carlo methods andother analytical techniques will be presented in a forthcoming paper.
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