[Thermoluminescent dosimetry for radiation exposure of the breast during film and xeromammography (author's transl)].

Measurements of radiation exposure of the breast during various mammographic procedures were carried out with LiF dosimeters. Using non-screen film (Kodak Definix Medical) at 30 kv., average skin dose in 105 patients was 10.1 R per exposure. During xeroradiography (45 kv.) skin dose was about 25% of this and for a film-screen system (Mammoray RP 3/MR 50 at 30 kv.) only 7% of this value. Skin dose (at constant potential) rises almost exponentially with increasing tissue thickness. The age of the patient and the type of tissue in the breast has a significant effect on the radiation dose. From the measurements, an average dose per exposure was calculated for the entire breast and for the glandular tissue. This gave a result of 1.6 rd (16 mGy) and 1.0 rd (10 mGy).