Rare-Earth Intensifying Screen Studies At The Bureau Of Radiological Health

Robert F. Wagner; Roger H. Schneider

doi:10.1117/12.954595

25 March 1976 Rare-Earth Intensifying Screen Studies At The Bureau Of Radiological Health

Robert F. Wagner, Roger H. Schneider

Proceedings Volume 0070, Application of Optical Instrumentation in Medicine IV; (1976) https://doi.org/10.1117/12.954595
Event: Application of Optical Instrumentation in Medicine, IV, 1975, Atlanta, United States

Abstract

Early in 1972 the Bureau of Radiological Health undertook a program in its Division of Electronic Products to assess the exposure and imaging characteristics of rare-earth intensifying screens. Several internal reports together with publications in the open literature summarize the principal finding of this program to date, namely, that a new technology has emerged which allows medical radiography to be carried out with exposure reductions between roughly 1.6 and 2.5 when the rare-earth systems are compared to calcium tungstate systems with comparable image quality. This exposure reduction is due to the increased quantum efficiency, or stopping power of these screens. We believe that the mixed reviews which the rare-earth systems have received are due to a misapplication of the additional brightness of the rare-earth phosphors which is inappropriate to the particular radiographic task.

Citation Download Citation

Robert F. Wagner and Roger H. Schneider "Rare-Earth Intensifying Screen Studies At The Bureau Of Radiological Health", Proc. SPIE 0070, Application of Optical Instrumentation in Medicine IV, (25 March 1976); https://doi.org/10.1117/12.954595

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