AI DBT Impact on Mammography Post-Breast Therapy

Leesburg, VA, August 12, 2021According to ARRS’ American Journal of Roentgenology (AJR), artificial intelligence-based computer-aided detection (AI-CAD) is a useful adjunct for reducing false-positive findings when performing post-breast conserving therapy (BCT) surveillance mammography.

“After BCT, adjunct digital breast tomosynthesis (DBT) or AI-CAD reduced recall rates and improved accuracy in the ipsilateral and contralateral breasts compared with digital mammography (DM),” wrote lead investigator Jung Hyun Yoon. “In the ipsilateral breast, addition of AI-CAD resulted in lower recall rate and higher accuracy than addition of DBT.”

Yoon and colleagues’ retrospective study included 314 women (mean age, 53.2 years; 4 with bilateral breast cancer) who underwent BCT followed by DBT (mean interval from surgery to DBT, 15.2 months). Three breast radiologists independently reviewed images in three sessions: DM, DM with DBT, and DM with AI-CAD. Recall rates and diagnostic performance were compared between these three sessions using readers’ mean results.

Among the 314 women, mean ipsilateral breast recall rate among three readers was lower (p<.001) for DM with AI-CAD (1.9%) than for DM with DBT (4.1%). In ipsilateral breast, mean accuracy (97.0% vs 94.8%, p=.02) and specificity (98.3% vs 96.1%, p=.003) were higher for DM with AI-CAD than for DM with DBT, respectively.
Noting that the addition of DBT or AI-CAD to DM significantly reduces recall rates and improves accuracy in women who are post-BCT, “the findings indicate the role of AI-CAD in addressing challenges in the interpretation of post-BCT surveillance mammograms,” the authors of this AJR article concluded.

An electronic supplement to this AJR article is available here

Founded in 1900, the American Roentgen Ray Society (ARRS) is the first and oldest radiological society in North America, dedicated to the advancement of medicine through the profession of radiology and its allied sciences. An international forum for progress in medical imaging since the discovery of the x-ray, ARRS maintains its mission of improving health through a community committed to advancing knowledge and skills with an annual scientific meeting, monthly publication of the peer-reviewed American Journal of Roentgenology (AJR), quarterly issues of InPractice magazine, AJR Live Webinars and Podcasts, topical symposia, print and online educational materials, as well as awarding scholarships via The Roentgen Fund®.