[Radiation dose to the sternum during mammography (author's transl)].

Previous measurements of radiation to the sternum during mammography in the living subject have shown relatively high doses to the surface of this region. It was therefore decided to carry out measurements on a sternal phantom. The aim of the investigation was to obtain information on the dose to the sternal marrow cavity. Measurements were carried out with a thermoluminescent dosimeter. It was shown that the mean dose to the marrow amounts to about 24% of surface dose, depending on the angle of incidence. This dose cannot be totally ignored. Protection of the sternum is therefore recommended. This is easily accomplished and takes little time or effort.