A Methodology For Comparison Of Quality Of Radiologic Images From Different Screen/Film Combinations Based On Radiologists' Subjective Judgments

John R. Thornbury; Dennis G. Fryback; Fred E. Patterson; Robert L. Chiavarini

doi:10.1117/12.955909

27 December 1977 A Methodology For Comparison Of Quality Of Radiologic Images From Different Screen/Film Combinations Based On Radiologists' Subjective Judgments

John R. Thornbury, Dennis G. Fryback, Fred E. Patterson, Robert L. Chiavarini

Author Affiliations +

Proceedings Volume 0127, Application of Optical Instrumentation in Medicine VI; (1977) https://doi.org/10.1117/12.955909
Event: Application of Optical Instrumentation in Medicine VI, 1977, Boston, United States

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.

Citation Download Citation

John R. Thornbury, Dennis G. Fryback, Fred E. Patterson, and Robert L. Chiavarini "A Methodology For Comparison Of Quality Of Radiologic Images From Different Screen/Film Combinations Based On Radiologists' Subjective Judgments", Proc. SPIE 0127, Application of Optical Instrumentation in Medicine VI, (27 December 1977); https://doi.org/10.1117/12.955909

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