The study was conducted as part of the Digital Mammography Imaging Screening Trial (DMIST) and involved more than 42,000 women in the United States and Canada through the American College of Radiology Imaging Network (ACRIN).

Researchers found a nonsignificant tendency toward better breast cancer detection with conventional film mammography in older women with nondense breasts, and because of this finding, digital mammography screening for all age groups was not cost-effective. -American College of Physicians