human
My doctor says I have to have a mammogram. What is a mammogram and why is it so important?
assistant
A mammogram is a type of X-ray that uses low-dose radiation to take pictures of the breast. It’s used to screen for breast cancer in women who are at high risk, such as those with a family history of the disease or who have had breast cancer before. Mammograms can also be used to help diagnose breast cancer if there are changes in the breast tissue.