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Digital breast tomosynthesis (DBT), an FDA-approved adjunct to digital mammography (DM), produces three-dimensional images. Although DBT has a lower recall rate and higher sensitivity, its effect on cancer mortality in the context of the potential harms of overdiagnosis remains unclear. Investigators queried a claims database to evaluate rates of DBT adoption in a large, privately insured U.S. population from 2015 through 2017, when >9.6 million screening mammograms among women aged 40–74 were performed. Socioeconomic data were also obtained.
DBT use increased from 13% in 2015 to >43% in late 2017, becoming the predominant mode of screening. Adoption of DBT was slowest in the Southeast and faster in the Northeast and Northwest, as well as in…