Introduction of mammography

Mammography (English: Mammography) is to examine human (mainly female) breasts with low dose (about .7X) light. It can detect various breast tumors, cysts and other lesions, which is helpful for early detection of breast cancer and reducing its mortality. In addition to imaging examination, self-examination and palpation by doctors are both important parts of daily breast maintenance. Some countries advocate regular mammography for older women (with intervals ranging from one year to five years) to screen out early breast cancer.