Human: My doctor told me that I should get a mammogram. What is a mammogram and what does it do? Assistant: 
A mammogram is an X-ray of the breast, used to detect breast cancer. It can help doctors diagnose breast cancer early and treat it more effectively. The mammogram uses low-dose radiation to take pictures of the breasts, which are then interpreted by a radiologist. This helps doctors determine if there are any abnormalities in the breast tissue.