The goals of screening mammography are reproducibly optimum images, accurately interpreted, at the lowest possible cost. This can reduce the mortality from breast cancer. Despite this, screening mammography has not been widely used because of the controversy over the age at onset and interval of screening, charge for the examination, misinformed primary care physicians, uninformed women, and other factors. The American College of Radiology's educational efforts and mammography accreditation program are overcoming some of these obstacles.