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Proceedings Paper

Correlations between time required for radiological diagnoses, readers' performance, display environments, and difficulty of cases
Author(s): David Gur; Howard E. Rockette; Jules H. Sumkin; Ronald J. Hoy; John H. Feist; F. Leland Thaete; Jill L. King; B. Simon Slasky; Linda M. Miketic; William H. Straub
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Paper Abstract

In a series of large ROC studies, the authors analyzed the time radiologists took to diagnose PA chest images as a function of observer performance indices (Az), display environments, and difficulty of cases. Board-certified radiologists interpreted at least 600 images each for the presence or absence of one or more of the following abnormalities: interstitial disease, nodule, and pneumothorax. Results indicated that there exists a large inter- reader variability in the time required to diagnose PA chest images. There is no correlation between a reader's specific median reading time and his/her performance. Time generally increases as the number of abnormalities on a single image increases and for cases with subtle abnormalities. Results also indicated that, in general, the longer the time for interpretation of a specific case (within reader), the further the observer's confidence ratings were from the truth. These findings were found to hold true regardless of the display mode. These results may have implications with regards to the appropriate methodology that should be used for imaging systems evaluations and for measurements of productivity for radiologists.

Paper Details

Date Published: 1 July 1991
PDF: 5 pages
Proc. SPIE 1446, Medical Imaging V: PACS Design and Evaluation, (1 July 1991); doi: 10.1117/12.45283
Show Author Affiliations
David Gur, Univ. of Pittsburgh (United States)
Howard E. Rockette, Univ. of Pittsburgh (United States)
Jules H. Sumkin, Univ. of Pittsburgh (United States)
Ronald J. Hoy, Univ. of Pittsburgh (United States)
John H. Feist, Univ. of Pittsburgh (United States)
F. Leland Thaete, Univ. of Pittsburgh (United States)
Jill L. King, Univ. of Pittsburgh (United States)
B. Simon Slasky, Univ. of Pittsburgh (United States)
Linda M. Miketic, Univ. of Pittsburgh (United States)
William H. Straub, Univ. of Pittsburgh (United States)


Published in SPIE Proceedings Vol. 1446:
Medical Imaging V: PACS Design and Evaluation

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