Journal article
Assessment of Interradiologist Agreement Regarding Mammographic Breast Density Classification Using the Fifth Edition of the BI-RADS Atlas
American journal of roentgenology (1976), Vol.206(5), pp.1119-1123
05/2016
DOI: 10.2214/AJR.15.15049
PMID: 26999655
Abstract
The objective of the present study was to assess interradiologist agreement regarding mammographic breast density assessment performed using the rating scale outlined in the fifth edition of the BI-RADS atlas of the American College of Radiology.
Breast density assessments of 1000 cases were conducted by five radiologists from the same institution who together had recently undergone retraining in mammographic breast density classification based on the fifth edition of BI-RADS. The readers assigned breast density grades (A-D) on the basis of the BI-RADS classification scheme. Repeat assessment of 100 cases was performed by all readers 1 month after the initial assessment. A weighted kappa was used to calculate intrareader and interreader agreement.
Intrareader agreement ranged from a kappa value of 0.86 (95% CI, 0.77-0.93) to 0.89 (95% CI, 0.81-0.95) on a four-category scale (categories A-D) and from 0.89 (95% CI, 0.86-0.92) to 0.94 (95% CI, 0.89-0.97) on a two-category scale (category A-B vs category C-D). Interreader agreement ranged from substantial (κ = 0.76; 95% CI, 0.73-0.78) to almost perfect (κ = 0.87; 95% CI, 0.86-0.89) on a four-category scale, and the overall weighted kappa value was substantial (0.79; 95% CI, 0.78-0.83). Interreader agreement on a two-category scale ranged from a kappa value of 0.85 (95% CI, 0.83-0.86) to 0.91 (95% CI, 0.90-0.92), and the overall weighted kappa was 0.88 (95% CI, 0.87-0.89).
Overall, with regard to mammographic breast density classification, radiologists had substantial interreader agreement when a four-category scale was used and almost perfect interreader agreement when a dichotomous scale was used.
Details
- Title: Subtitle
- Assessment of Interradiologist Agreement Regarding Mammographic Breast Density Classification Using the Fifth Edition of the BI-RADS Atlas
- Creators
- Ernest U Ekpo - 2 Department of Radiography and Radiology, Faculty of Health Sciences, University of Calabar, Calabar, NigeriaUjong Peter Ujong - 3 Faculty of Medical Sciences, Cross River University of Technology, Okuku, NigeriaClaudia Mello-Thoms - 1 Discipline of Medical Radiation Sciences, Faculty of Health Sciences, University of Sydney, M205, Cumberland Campus, 75 East St, Lidcombe, Sydney, NSW 2141, AustraliaMark F McEntee - 1 Discipline of Medical Radiation Sciences, Faculty of Health Sciences, University of Sydney, M205, Cumberland Campus, 75 East St, Lidcombe, Sydney, NSW 2141, Australia
- Resource Type
- Journal article
- Publication Details
- American journal of roentgenology (1976), Vol.206(5), pp.1119-1123
- Publisher
- United States
- DOI
- 10.2214/AJR.15.15049
- PMID
- 26999655
- ISSN
- 0361-803X
- eISSN
- 1546-3141
- Language
- English
- Date published
- 05/2016
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering; Radiology
- Record Identifier
- 9984051762002771
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