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Proceedings Paper

Efficiency Of Information Transfer In Diagnostic Radiology
Author(s): I. Brodie; R. A. Gutcheck
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Paper Abstract

Pictorial information theory is restated in a form that predicts, with fair precision, the minimum radiation required to detect a given feature size in diagnostic radiology. In contrast to conventional approaches, the probability of detection is made a visible variable in the calculation--an aspect of prime importance for diagnostic interpretation. An accurate knowledge of the absorption coefficients of the tissue concerned and the sizes one wishes to detect is required, but the calculation is relatively easy to carry out with a programmable calculator or microcomputer. The concept of "viewing efficiency" is introduced to compare the performance of a real radiographic system with that of a perfect radiographic system. The theory is applied to mammography, where the viewing efficiencies of film, film/ screen combinations, and xeroradiography are compared. It is shown that a more efficient method for detecting the latent charge image in xeroradiography, coupled with digital data storage and appropriate viewing methods, should result in substantial reductions in exposure compared to the present toning methods.

Paper Details

Date Published: 4 November 1981
PDF: 7 pages
Proc. SPIE 0314, Digital Radiography, (4 November 1981); doi: 10.1117/12.933069
Show Author Affiliations
I. Brodie, SRI International (United States)
R. A. Gutcheck, SRI International (United States)

Published in SPIE Proceedings Vol. 0314:
Digital Radiography
William R. Brody M.D., Editor(s)

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