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Proceedings Paper

Noise, Objective, And Psychophysical Measures
Author(s): Joel E. Gray
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Paper Abstract

Image evaluation in diagnostic radiology and nuclear medicine is an area of concern to many researchers today. It is not only a challenging field for the physicist but of extreme importance to the radiologist. Ultimately both the radiologist and the physicist would like to optimize the radiographic imaging processes, but before it is possible to optimize a system it is first necessary to be able to quantitate the system in meaningful terms. An extensive effort has been directed to the quantitation of image quality in radiology over the past years utilizing objective measures such as the modulation transfer function (MTF), resolution, contrast, signal-to-noise ratio, etc. Since these do not include the interaction of the radiologist with the radiographic image, the results, more of-ten than not, do not correlate with the radiologist's subjective opinion of the system. More recently several researchers have applied the principles of psychophysical evaluation to radiographic imaging bringing the radiologist and his subjective interactions into the evaluation of image quality. This has led to some insight into the problems of radiological imaging, but the expense in terms of radiologist's and physicist's time may not be justifiable in many instances.

Paper Details

Date Published: 1 February 1975
PDF: 4 pages
Proc. SPIE 0047, Application of Optical Instrumentation in Medicine III, (1 February 1975); doi: 10.1117/12.954040
Show Author Affiliations
Joel E. Gray, University of Toronto (Canada)


Published in SPIE Proceedings Vol. 0047:
Application of Optical Instrumentation in Medicine III
Paul L. Carson; Edward L. Chaney; William R. Hendee, Editor(s)

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