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Optical Engineering

Methods Of Sensitometry For Low Energy Radiography
Author(s): Daniel R. Bednarek; Stephen Rudin; Roland Wong
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Paper Abstract

Inverse-square sensitometry for low kVp techniques is limited by air attenuation and beam hardening. It is thus difficult to obtain accurate H and D curves for mammographic screen-film combinations at technique factors used clinically. Methods are described for the determination of characteristic curves at low x-ray energies which provide composite intensity-scale curves using small changes in source-to-receptor distance and concomitant changes in either exposure time, beam attenuation, or kVp. H and D curves obtained at low kVp's using the various sensitometric approaches are compared with those obtained using inverse-square sensitometry; the relative merits of the different methods are discussed.

Paper Details

Date Published: 1 February 1982
PDF: 3 pages
Opt. Eng. 21(1) doi: 10.1117/12.7972867
Published in: Optical Engineering Volume 21, Issue 1
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)
Roland Wong, State University of New York at Buffalo (United States)


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