Detection or decision errors? Missed lung cancer from the posteroanterior chest radiograph

Manning, David, Ethell, Susan and Donovan, Tim (2004) Detection or decision errors? Missed lung cancer from the posteroanterior chest radiograph. The British Journal of Radiography, 77 (915). pp. 231-235. Full text not available from this repository.

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Abstract. A test bank of verified chest radiographs was compiled for visual search experiments to investigate
radiology performance in the detection of early lung cancer. A measure of the physical characteristics of the
lesions was derived to determine the conspicuity (x) of the nodules and to investigate possible causes of failed
detection. Observer performance was measured by alternate free response operating characteristic (AFROC)
methodology and was supplemented with visual search recording. Correlation of AFROC scores and the x
values was poor but inspection of the visual search recordings showed that most nodules were fixated. Fixations
on missed lesions produced average dwell times greater than three times the minimum duration thought to be
associated with detection. We conclude that the majority of errors were failures of decision rather than detection
and comment on the implications of this for strategies to improve diagnostic effectiveness

Item Type: Article
Journal or Publication Title: The British Journal of Radiography
Publisher: The British Institute of Radiology
ISSN: Print: 0007-1285 Online: 1748-880X
Related URL(s):
Departments: Faculty of Health and Science > Medical and Sports Sciences > Health and Medical Sciences
Depositing User: Insight Administrator
Date Deposited: 07 May 2010 15:39
Last Modified: 26 Aug 2016 16:08

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