Intraobserver interpretation of breast ultrasonography following the BI-RADS classification.
Eur J Radiol
; 74(3): 525-8, 2010 Jun.
Article
in En
| MEDLINE
| ID: mdl-19423260
ABSTRACT
PURPOSE:
To use the BI-RADS ultrasound classification in an intraobserver retrospective study of the interpretation of breast images. MATERIALS ANDMETHODS:
The study used 40 breast ultrasound images recorded in orthogonal planes, obtained from patients with an indication for surgery. Eight professionals experienced in breast imaging analysis retrospectively reviewed these lesions, in three rounds of image interpretation (with a 3-6 months interval between rounds). Observers had no access to information from medical records or histopathological results, and, without their knowledge, in each new round were assigned the same images previously interpreted by them. Fleiss-modified Kappa measures were the study main concordance index. Besides the BI-RADS, a scale grouping its categories 2-3 and 4-5 was also used. The statistical analysis concerned the intraobserver agreement.RESULTS:
Kappa values ranged from 0.37 to 0.75 (original categories) and from 0.73 to 0.87 (grouped categories). Overall, out of the 8 observers, 7 presented moderate to substantial concordance (Kappa values 0.51 to 0.74).CONCLUSION:
The BI-RADS is a reporting tool that provides a standardized terminology for US exams. In this study, moderate to substantial concordance in Kappa values was found, in agreement with other studies of the literature.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Breast Neoplasms
/
Ultrasonography, Mammary
Type of study:
Diagnostic_studies
/
Observational_studies
/
Risk_factors_studies
Limits:
Adolescent
/
Adult
/
Aged
/
Aged80
/
Female
/
Humans
/
Middle aged
Country/Region as subject:
America do sul
/
Brasil
Language:
En
Journal:
Eur J Radiol
Year:
2010
Document type:
Article
Affiliation country:
Brazil