BIRADS or ‘BI-RADS stands for Breast Imaging Reporting and Data System and was established by the American College of Radiology.
BI-RADS is a scheme for putting the findings from mammogram screening (for breast cancer diagnosis) into a small number of well-defined categories. Although BIRADS started out for use with breast screening mammography, it was later adapted for use with Magnetic Resonance Imaging (MRI) and breast ultrasound (US) as well.
BIRADS is something that mainly benefits the radiologists who report mammogram (and breast MRI and US) findings. It doesn’t do anything directly useful for patients or for the doctors who referred a patient for breast imaging.