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Proceedings Paper

Comparison Of Modified Bootstrap And Conventional Sensitometry In Medical Radiography
Author(s): Daniel R Bednarek; Stephen Rudin
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Paper Abstract

A new modified bootstrap approach to sensitometry is presented which provides H and D curves that show almost exact agreement with those obtained using conventional methods. Two bootstrap techniques are described; both involve a combination of inverse-square and step-ped wedge modulation of the radiation field and provide intensity-scale sensitometric curves as appropriate for medical radiography. H and D curves obtained with these modified techniques are compared with those obtained for screen-film combinations using inverse-square sensitometry as well as with those obtained for direct x-ray film using time-scale sensitometry. The stepped-wedge of the Wisconsin X-Ray Test Cassette was used in the boot-strap approach since it provides sufficient exposure latitude to encompass the useful den-sity range of medical x-ray film. This approach makes radiographic sensitometry quick and convenient, allowing accurate characteristic curves to be obtained for any screen-film cassette using standard diagnostic equipment.

Paper Details

Date Published: 18 August 1980
PDF: 5 pages
Proc. SPIE 0233, Application of Optical Instrumentation in Medicine VIII, (18 August 1980); doi: 10.1117/12.958895
Show Author Affiliations
Daniel R Bednarek, State University of New York at Buffalo (United States)
Stephen Rudin, State University of New York at Buffalo (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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