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Proceedings Paper

Outlining and categorising mammographic breast density: expert radiologist perception
Author(s): Yanpeng Li; Patrick C. Brennan; Warwick Lee; John Ryan; Jennifer Cawson; Carolyn Nickson; Warren Reed; Mariusz W. Pietrzyk; Dana Al Mousa; Elaine Ryan
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Paper Abstract

The main aim of this study is to investigate the outlining and categorising of mammographic breast density by expert radiologists in order to help to understand what kind of region radiologists perceive as breast density and how they assess the density of a mammogram. It investigates inter-radiologist variability in breast density outlining and assessment. Forty-five normal cranio-caudal view mammograms with a range of appearances of breast density were presented to twenty radiologists. Each participant was asked to manually outline any mammographic breast density using an interactive pen tablet and to visually classify mammographic breast density in two ways by using the BI-RADS density categorization system by the American College of Radiology, and by estimating the percentage of area of mammographic breast density. Large differences were found in breast density outlining for all BI-RADS density categories. Scattered and patchy breast density appeared to be associated with large variation in outlining. There was moderate inter-radiologist agreement in BI-RADS density categorising (Kappa = 0.489). Breast density is a complex radiological feature that impacts upon assessment consistency.

Paper Details

Date Published: 22 February 2012
PDF: 8 pages
Proc. SPIE 8318, Medical Imaging 2012: Image Perception, Observer Performance, and Technology Assessment, 83180I (22 February 2012); doi: 10.1117/12.912082
Show Author Affiliations
Yanpeng Li, The Univ. of Sydney (Australia)
Patrick C. Brennan, The Univ. of Sydney (Australia)
Warwick Lee, Cancer Institute NSW (Australia)
John Ryan, The Univ. of Sydney (Australia)
Jennifer Cawson, The Univ. of Melbourne (Australia)
Carolyn Nickson, The Univ. of Melbourne (Australia)
Warren Reed, The Univ. of Sydney (Australia)
Mariusz W. Pietrzyk, The Univ. of Sydney (Australia)
Dana Al Mousa, The Univ. of Sydney (Australia)
Elaine Ryan, The Univ. of Sydney (Australia)

Published in SPIE Proceedings Vol. 8318:
Medical Imaging 2012: Image Perception, Observer Performance, and Technology Assessment
Craig K. Abbey; Claudia R. Mello-Thoms, Editor(s)

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