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Proceedings Paper

A Methodology For Comparison Of Quality Of Radiologic Images From Different Screen/Film Combinations Based On Radiologists' Subjective Judgments
Author(s): John R. Thornbury; Dennis G. Fryback; Fred E. Patterson; Robert L. Chiavarini
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Paper Abstract

A method using radiologists' subjective judgments was developed to compare the quality of the diagnostic image information from two different screen/film combinations (Hi Plus/RPL versus Lanex/Ortho G). A sample of 148 comparison film pairs was obtained in the course of performing 74 urograms using the two film/screen combinations. Each film pair was evaluated by three radiologists, using a blind film reading format, in regard to: 1) anatomic diagnostic criteria visualization, 2) radiologic diagnostic certainty, 3) presence or absence of quantum mottle, and 4) prediction of which film of a pair was the rare earth screen/film combination. There was a significant difference favoring Hi Plus/RPL in perceived quality of visualization of anatomic criteria. However, the difference was more statistical than of practical importance. Diagnostic certainty differed only marginally and slightly favored the Hi Plus/RPL combination. No significant differences in perception of quantum mottle were attributable to either screen/film combination. Radiologists were able to correctly identify the screen/film combination a significant proportion of the time.

Paper Details

Date Published: 27 December 1977
PDF: 6 pages
Proc. SPIE 0127, Application of Optical Instrumentation in Medicine VI, (27 December 1977); doi: 10.1117/12.955909
Show Author Affiliations
John R. Thornbury, University of Michigan Medical School (United States)
Dennis G. Fryback, University of Wisconsin (United States)
Fred E. Patterson, St. Joseph's Mercy Hospital (United States)
Robert L. Chiavarini, University of Michigan Medical School (United States)


Published in SPIE Proceedings Vol. 0127:
Application of Optical Instrumentation in Medicine VI
Joel E. Gray; William R. Hendee, Editor(s)

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