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Distortion of fast‐neutron dose distribution by bone
Author(s) -
McGinley Patton H.,
McLaren John R.
Publication year - 1976
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 - 10.1118/1.594232
Subject(s) - dosimeter , neutron , ionization chamber , materials science , dosimetry , absorbed dose , cyclotron , equivalent dose , nuclear medicine , radiochemistry , ionization , physics , nuclear physics , chemistry , medicine , ion , plasma , quantum mechanics
The influence of bone on dose distributions due to fast neutrons generated at the Naval Research Laboratory (NRL) Cyclotron was investigated. A paired dosimeter consisting of a parallel‐plate, tissue‐equivalent ionization chamber and thermoluminsecent material was used to partition the absorbed dose into neutron and γ‐ray components. Several thicknesses of bone were simulated using bone‐equivalent liquid and plastic. Based on these measurements, the authors conclude that, as a result of the increased absorption of neutrons by bone, lower dose levels are found behind bone that would be predicted from dose distributions in muscle‐equivalent liquid.