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Proceedings Paper

Training observers for receiver operating characteristic studies
Author(s): William H. Straub; Howard E. Rockette; Jill L. King; Nancy A. Obuchowski; Walter F. Good; John H. Feist; Barbara C. Good; Charles E. Metz
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Paper Abstract

In an ongoing, multi-reader, multi-project program dealing with the interpretation of radiological images, we have examined several issues of methodology which have not as yet been addressed that may impact on the determination of reader performance as measured by receiver operating characteristic (ROC) analysis. Among these are issues associated with the training of observers prior to such studies. We employed three types of observer training that we found to be necessary for the successful performance of such studies: 1) a general instructional session for observers on the study protocol and system operation; 2) practice with an interactive computerized feedback teaching file that demonstrates the imaging systems and familiarized readers with an idea of the types of cases that were used in the study along with their correct diagnoses; and 3) training sessions in which readers were taught the manner in which to distribute answer ratings over an ordinal confidence scale. The possible effect of such types of training on the performance and results of ROC studies should be carefully considered prior to their commencement.

Paper Details

Date Published: 1 August 1990
PDF: 5 pages
Proc. SPIE 1234, Medical Imaging IV: PACS Systems Design and Evaluation, (1 August 1990); doi: 10.1117/12.18953
Show Author Affiliations
William H. Straub, Univ. of Pittsburgh School of Medicine (United States)
Howard E. Rockette, Univ. of Pittsburgh Graduate School of Public Health (United States)
Jill L. King, Univ. of Pittsburgh School of Medicine (United States)
Nancy A. Obuchowski, Univ. of Pittsburgh Graduate School of Public Health (United States)
Walter F. Good, Univ. of Pittsburgh School of Medicine (United States)
John H. Feist, Univ. of Pittsburgh School of Medicine (United States)
Barbara C. Good, Univ. of Pittsburgh School of Medicine (United States)
Charles E. Metz, Univ. of Chicago (United States)


Published in SPIE Proceedings Vol. 1234:
Medical Imaging IV: PACS Systems Design and Evaluation
Samuel J. Dwyer; R. Gilbert Jost, Editor(s)

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