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Proceedings Paper

Energy And Exposure Rate Dependences Of Ionization Chamber And Fluorescent Type Automatic X-Ray Exposure Controls
Author(s): Bruce A. Horn; Charles E. Finney; Kim C. Luk
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Paper Abstract

Manufacturers use either ionization chambers or photomultiplier tubes coupled to fluorescent screens as the pickup device in their automatic film exposure controls. The clinical performance of the control will be affected by its energy and exposure rate dependences. These two parameters are not usually determined independently when evaluating an automatic exposure control. By independently measuring these parameters the performance evaluation procedure can be shortened, while improving the description of performance over a wide range of tube potentials and patient thicknesses. A method to isolate the energy and the exposure rate dependences will be discussed, and measurements representing several manufacturers will be presented.

Paper Details

Date Published: 18 August 1980
PDF: 6 pages
Proc. SPIE 0233, Application of Optical Instrumentation in Medicine VIII, (18 August 1980); doi: 10.1117/12.958918
Show Author Affiliations
Bruce A. Horn, Southern California Permanente Medical Group (United States)
Charles E. Finney, Southern California Permanente Medical Group (United States)
Kim C. Luk, Southern California Permanente Medical Group (United States)


Published in SPIE Proceedings Vol. 0233:
Application of Optical Instrumentation in Medicine VIII
Joel E. Gray; William R. Hendee; Andrew G. Haus; William S. Properzio, Editor(s)

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