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Proceedings Paper

Logistic Distribution As A Model Of Film Characteristic Curves In Radiological Imaging
Author(s): John R. Prince; Cynthia H. Goodman Mumma
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Paper Abstract

The cumulative logistic distribution function is shown to be a robust mathematical model of film characteristic curves for a variety of radiological imaging tasks. This model allows one to write analytical functions for several important metrices in film sensitometry. In practice, curve-fitting is accomplished by linear regression analysis of the logistic distribution by forming the logit of D/Dm where D is the optical density and Dm denotes the maximum optical density obtainable. This model has been used to characterize films in radioscintigraphy, conventional film/screen combination and a multiformat camera. Linearization of the characteristic curves resulted in correlation coefficients ranging from 0.980 - 0.996.

Paper Details

Date Published: 27 June 1988
PDF: 5 pages
Proc. SPIE 0914, Medical Imaging II, (27 June 1988); doi: 10.1117/12.968764
Show Author Affiliations
John R. Prince, University of Oklahoma Health Sciences Center (United States)
Cynthia H. Goodman Mumma, University of Oklahoma Health Sciences Center (United States)

Published in SPIE Proceedings Vol. 0914:
Medical Imaging II
Samuel J. Dwyer; Roger H. Schneider; Samuel J. Dwyer; Roger H. Schneider; Roger H. Schneider; Samuel J. Dwyer, Editor(s)

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