Breast imaging centers in the United States are currently transitioning from traditional screen-film mammography to full-field digital mammography. Quality control for full-field digital mammography is more difficult, time consuming, and expensive than for traditional screen-film mammography. Full-field digital mammography quality control is more precise than screen-film mammography quality control at identifying noncompliant components. As per U.S. Food and Drug Administration requirements, each manufacturer of full-field digital mammography equipment designs and establishes its own quality control process.