Mammography is a specific type of imaging that uses a low-dose x-ray system to examine breasts. A mammography exam, called a mammogram, is used to aid in the early detection and diagnosis of breast diseases in women.Quality mammography can help detect breast cancer in its earliest, most treatable stages – when it is too small to be felt or detected by any other method. The Mammography Quality Standards Act (MQSA) established baseline standards for radiation dose, personnel, equipment, and image quality.