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Batho's correction factor combined with scatter summation
Author(s) -
Lulu Bruce A.,
Bjärngard Bengt E.
Publication year - 1982
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 - 10.1118/1.595174
Subject(s) - monte carlo method , cover (algebra) , beam (structure) , photon , physics , cross section (physics) , optics , computational physics , mathematics , statistics , engineering , mechanical engineering , quantum mechanics
In dose calculations for external beams, Batho's correction factor applies to internal heterogeneities that cover the entire cross section of the beam. This study examines the possibility of combining Batho's correction factor with a scatter summation method, akin to that of Day, for heterogeneities that cover only part of the beam and for arbitrarily located points. The results of such calculations for beams of 60 Coγ photons are compared to Monte Carlo calculations by Webb and Fox and experimental data by Sontag. It is concluded that the technique, with some exceptions, yields results that are superior to the simple Batho correction factor.