This is because a mammogram for breast cancer involves sandwiching the mammogram film in both breasts. A mammogram is a convenient, non-invasive test for breast cancer. Firstly, during the mammogram, you will need to remove your shirt and bra, as well as any metal objects on your body, to avoid any interference with the examination. Secondly, during the examination, a splint may be used to apply pressure to the breasts and a fluoroscopy is performed, which most people will feel a slight pain in the breasts. However, the examination is short, about five minutes, so you need to be patient during the mammogram. Breast cancer is one of the most common cancers in women. The cause of the disease is unknown, so a mammogram is a good way to find out about the health of your breasts.