Monte Carlo calculations have been performed for charged particle beams incident on density discontinuities which extend for a substantial portion of the particle range. We present dose distributions for energy-modulated proton beams incident on long slivers of bone in tissue. The influence of sliver width and length, and of the angular divergence of the beam, is investigated. Comparable dose distributions are also presented for a pi-meson beam. The significance of the results is related to the problem of assessing the spatial resolution necessary in the measurement of densities in inhomogeneous media in order to guide charged particle radiotherapy.
No takes yet. Share an insight, caveat, or question.
Goitein et al. (1978) studied this question.