Mammography is the study of the breast using x ray. The actual test Is called a mammogram. There are two types of mammograms. A screening mammogram is ordered for women who have no problems with their breasts. It consists of two x-ray views of each breast. A diagnostic mammogram is for evaluation of new abnormalities or of patients with a past abnormality requiring follow-up (i.e., a woman with breast cancer treated with lumpectomy). Additional x rays from other angles or special views of certain areas are taken.