Conference proceeding
Inter-observer variability within BI-RADS and RANZCR mammographic density assessment schemes
Progress in Biomedical Optics and Imaging - Proceedings of SPIE, Vol.9787, pp.97871C-97871C-10
03/24/2016
DOI: 10.1117/12.2214932
Abstract
This study compares variability associated with two visual mammographic density (MD) assessment methods using two separate samples of radiologists. The image test-set comprised of images obtained from 20 women (age 42-89 years). The images were assessed for their MD by twenty American Board of Radiology (ABR) examiners and twenty-six radiologists registered with the Royal Australian and New Zealand College of Radiologists (RANZCR). Images were assessed using the same technology and conditions, however the ABR radiologists used the BI-RADS and the RANZCR radiologists used the RANZCR breast density synoptic. Both scales use a 4-point assessment. The images were then grouped as low- and high-density; low including BIRADS 1 and 2 or RANZCR 1 and 2 and high including BI-RADS 3 and 4 or RANZCR 3 and 4. Four-point BI-RADS and RANZCR showed no or negligible correlation (ρ=-0.029; p<0.859). The average inter-observer agreement on the BI-RADS scale had a Kappa of 0.565; [95% CI = 0.519 - 0.610], and ranged between 0.328-0.669 while the inter-observer agreement using the RANZCR scale had a Kappa of 0.360; [95% CI = 0.308 - 0.412] and a range of 0.078-0.499. Our findings show a wider range of inter-observer variability among RANZCR registered radiologists than the ABR examiners.
Details
- Title: Subtitle
- Inter-observer variability within BI-RADS and RANZCR mammographic density assessment schemes
- Creators
- Christine N Damases - The Univ. of Sydney (Australia)Claudia Mello-Thoms - The Univ. of Sydney (Australia)Mark F McEntee - The Univ. of Sydney (Australia)
- Contributors
- Craig K Abbey (Editor) - Univ. of California, Santa Barbara (United States)Matthew A Kupinski (Editor) - College of Optical Sciences, The Univ. of Arizona (United States)
- Resource Type
- Conference proceeding
- Publication Details
- Progress in Biomedical Optics and Imaging - Proceedings of SPIE, Vol.9787, pp.97871C-97871C-10
- Publisher
- SPIE
- DOI
- 10.1117/12.2214932
- ISSN
- 1605-7422
- Language
- English
- Date published
- 03/24/2016
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering; Radiology
- Record Identifier
- 9984051979502771
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