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Proceedings Paper

Disease prevalence and the index of detectability: a survey of studies of lung cancer detection by chest radiography
Author(s): Harold L. Kundel
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Paper Abstract

A survey of 12 studies of lung cancer detection with cancer prevalence ranging from 0.9 to 476 cancers per 1000 showed that the unit-slope index of detectability, d', decreased from a high value of 3.9 at low prevalence to 1.4 at high prevalence. A proposed explanation is that the readers are operating on an ROC curve with a slope that is less than unity approximating 0.6. On such a curve, a shift to more stringent criteria that occurs with decreasing prevalence in order to minimize false positives, would result in a increased unity- slope d'.

Paper Details

Date Published: 14 April 2000
PDF: 10 pages
Proc. SPIE 3981, Medical Imaging 2000: Image Perception and Performance, (14 April 2000); doi: 10.1117/12.383100
Show Author Affiliations
Harold L. Kundel, Univ. of Pennsylvania (United States)


Published in SPIE Proceedings Vol. 3981:
Medical Imaging 2000: Image Perception and Performance
Elizabeth A. Krupinski, Editor(s)

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