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Proceedings Paper

Some Sources Of Errors In The Performance Testing Of Diagnostic X-Ray Systems
Author(s): Tommie J. Morgan; Libby B. Smith; Leland R. Kirkland
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Paper Abstract

Sources of error associated with the measurement of four performance parameters are discussed in this paper. These are the measurement of half-value layer (HVL), light field edge location, x-ray and light field congruence, and x-ray field size. HVL measurement parameters discussed are field size, the detector energy-dependent response, and x-ray beam filtration. Light field edge location by both visual and photometric methods are compared and differences quantified for one x-ray beam collimator. The impact of the different methods of light field edge location on x-ray and light field congruence are described. X-ray field size measurements for x-ray systems having large focal spots are discussed. The effect of the large focal spot as it impacts on small x-ray field size measurements is described.

Paper Details

Date Published: 23 December 1976
PDF: 6 pages
Proc. SPIE 0096, Application of Optical Instrumentation in Medicine V, (23 December 1976); doi: 10.1117/12.965443
Show Author Affiliations
Tommie J. Morgan, Food and Drug Administration (United States)
Libby B. Smith, Food and Drug Administration (United States)
Leland R. Kirkland, National Cancer Institute (United States)


Published in SPIE Proceedings Vol. 0096:
Application of Optical Instrumentation in Medicine V
Robert K. Cacak; Paul L. Carson; Gregory Dubuque; Joel E. Gray; William R. Hendee; Raymond P. Rossi; Arthur Haus, Editor(s)

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