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Radiology, Vol 132, 765-766, Copyright © 1979 by Radiological Society of North America

ARTICLES

Scattered radiation from trimmer bars in the cobalt-60 teletherapy machines

WJ Graham, DW Anderson, CR Bogardus Jr and SE Acker

The amount of scattered radiation resulting from four Cobalt-60 teletherapy units in four different hospitals when trimmer bars were fully extended was studied. Scatter was present for all machines checked at between 10% and 20% of the central axis dose. Clinical significance is also discussed.




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