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Title: Mammographic feature type and reader variability by occupation - an ROC study
Authors: Scott, Hazel J.
Gale, Alastair G.
Keywords: Observer performance evaluation
Image perception
Breast screening
Mammographic feature
Issue Date: 2010
Publisher: © 2010 Society of Photo-Optical Instrumentation Engineers
Citation: SCOTT, H.J. and GALE, A.G., 2010. Mammographic feature type and reader variability by occupation - an ROC study. IN: Medical Imaging 2010: Image Perception, Observer Performance, and Technology Assessment, edited by David J. Manning, Craig K. Abbey, Proc. SPIE 7627,762715 (2010).
Abstract: Previous work has outlined that certain mammographic appearances feature more prominently in reader’s false negative responses on a self-assessment scheme. Bi-annually 600 breast-screening film-readers complete at least one round of the Personal Performance in Mammographic Screening (PERFORMS) self-assessment scheme in the UK. The main occupational groups in UK Breast Screening can be categorised thus, Radiologist, Technologists and Symptomatics. Previous work has shown that these groups can vary in their reading ‘style’ and accuracy on self-assessed cases. These groups could be said to contain individuals each with (arguably) pronounced differences in their real life reading experience, symptomatic readers routinely read a large number of cases with abnormal appearances and Technologists (specially trained to read films) do not have the same medical background as breast-screening Radiologists. We aimed to examine overall (national) and group (occupational) differences in terms of ROC analysis on those mammographic cases with different mammographic appearance (feature type). Several main feature types were identified namely; Well Defined Mass (WDM), Ill Defined Mass (IDM), Spiculate Mass (SPIC), Architectural Distortions (AD), Asymmetry (ASYM) and Calcification (CALC). Results are discussed in light of differences in real-life practice for each of the occupational groups and how this may impact on accuracy over certain mammographic appearances.
Description: Copyright 2010 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. This paper can also be found at: http://dx.doi.org/10.1117/12.844377
Version: Published
DOI: 10.1117/12.844377
URI: https://dspace.lboro.ac.uk/2134/6285
ISBN: 9780819480286
ISSN: 1605-7422
Appears in Collections:Conference Papers and Presentations (Computer Science)

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