Abstract: Objective To assess breast ultrasonic training based on Breast Imaging Reporting and Data System (BI-RADS 4). Methods Thirty three undergraduate residents were trained for breast ultrasonic training. The positive predictive values of BI-RADS 4a-4c were compared with theoretical values of the second version of BI-RADS lexicon for US. Results The level of diagnostic BI-RADS 4a was good (positive predictive value was slightly higher than theoretical values), and the level of diagnostic BI-RADS 4b-4c was excellent (positive predictive values were both in accordance with the corresponding theoretical values). Conclusions A structured report as BI-RADS can be an effective educational tool, and in favor of standardizing breast imaging reports.

Key words: breast ultrasound diagnosis, Breast Imaging Reporting and Data System, resident, structured report