What about exposure to radiation?

The radiation dose during a mammography screening is typically kept as minimal as possible and must not exceed predefined levels.The modern digital equipment used meets the highest quality standards and is checked daily. Compressing the breast during the examination allows a particularly low dose of radiation to be used.The so-called effective dose for a mammogram of both breasts taken from two positions in the mammography screening is 0.2 to 0.4 millisieverts. This is less than the natural exposure to radiation (terrestrial radiation: 2.1 millisievert/year) and a lower dose than most other x-rays. Source | Federal Office of Radiation Protection brochure "X-ray: Benefits and risks including x-ray record