Mammographic Screening Outcomes with Digital Breast Tomosynthesis

This research article evaluates the outcomes of mammographic screening among women aged 40 to 79 years who underwent routine digital mammography (DM) or digital breast tomosynthesis (DBT) between January 2014 and December 2020. The study analyzes a total of 2,528,063 screening mammograms from 1,100,447 women, focusing on key metrics such as recall rate (RR), cancer detection rate (CDR), positive predictive value of recall (PPV1), biopsy rate, and positive predictive value of biopsy (PPV3). The findings indicate that DBT demonstrated a lower recall rate of 8.9% compared to 10.3% for DM, along with a higher CDR of 5.3 per 1000 screening mammograms versus 4.5 for DM. Additionally, the study reports a higher PPV1 for DBT at 5.9% compared to 4.3% for DM, and a higher biopsy rate of 17.6 per 1000 for DBT versus 14.5 for DM. However, the PPV3 was similar across both modalities. These results suggest that DBT may offer improved screening outcomes over DM.