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Dose perturbations at interfaces in photon beams
Author(s) -
Werner Barry L.,
Das Indra J.,
Khan Faiz M.,
Meigooni Ali S.
Publication year - 1987
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.596023
Subject(s) - photon , fluence , dosimetry , physics , photon energy , ranging , polystyrene , computational physics , optics , materials science , irradiation , nuclear physics , nuclear medicine , nuclear magnetic resonance , computer science , medicine , telecommunications , polymer
A model based on an approximation called the partial fluence approximation is presented for the calculation of dose distributions in the vicinity of medium interfaces in photon beams. The predictions of the model are compared with dose distributions measured in layered phantoms consisting of aluminum and polystyrene, for photon beams ranging in energy from 6 0 Co to 24 MV.