DBT exams take twice as long to read as 2D mammograms, but the learning curve is short

Comparison of a 2D digital mammogram and breast tomosynthesis 3D mammography showing ability to better evaluate details in areas of dense breast tissue, rather than seeing areas of dense breast tissue overlapping, which can mimic or hide a cancer. Photo from UCSF.

Comparison of a 2D digital mammogram and breast tomosynthesis 3D mammography showing ability to better evaluate details in areas of dense breast tissue, rather than seeing areas of dense breast tissue overlapping, which can mimic or hide a cancer. Photo from UCSF.

Although DBT exams are proven to identify more difficult to detect cancers, especially among women with dense breasts, they also include significantly more images than standard 2D mammograms.