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Radiology, Vol 125, 811-816, Copyright © 1977 by Radiological Society of North America

ARTICLES

Screen/film system speed: its dependence on x-ray energy

CJ Vyborny, CE Metz, K Doi and K Rossmann

Dependence of the speed of various screen/film systems on x-ray energy was studied using the nearly monoenergetic x rays emitted by a filtered fluorescent source. The results show that response depends on screen phosphor composition and thickness. Barium and rare earth screens having K absorption energies lower than that of calcium tungstate are relatively more sensitive to x rays in the 40-70-keV region.




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