human
I've been told I have to get a mammogram. What is a mammogram and why do I need one?
assistant
A mammogram is an x-ray of the breast used to detect cancerous tumors or other abnormalities in the breasts. It’s done by having you lie down on your back with your breast hanging freely below the chest wall, while the technician positions a special machine above it. The machine then moves up and down, taking pictures of the breast tissue.