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A clinical system for the in vivo measurement of lung density
Author(s) -
Webber C. E.,
Coates G.
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 - 10.1118/1.595112
Subject(s) - scattering , compton scattering , gravimetric analysis , materials science , optics , physics , nuclear medicine , chemistry , medicine , organic chemistry
A three‐source, three‐detector system for the Compton scattering measurement of lung density is described. The average density is measured in a volume of tissue which is similar in shape to a sphere of diameter 4.0 cm. While scattering measurements of lung density are precise, results in phantoms showed that density in normal man is only about 70% of the gravimetric density. This error is considered to be due predominantly to the influence of multiple photon scattering.