Quality Requirements in Mammographic Screening in Sweden
The medical value of screening for breast cancer with mammography has been proved in Swedish trials (Tabar et al. 1985), in which a 30% reduction of breast cancer mortality was observed. However, the benefits may easily be lost if the examinations are not performed in accordance with the most stringent quality requirements. With the prospect of general screening with mammography all over Sweden, the National Health Board, in collaboration with the National Institute of Radiation Protection, have issued guidelines on how screening is to be organized. Far-reaching recommendations concerning X-ray equipment, film processing, radiation dose, and image quality are in preparation and were issued in 1990. The basis of these recommendations, their background and the underlying field experience are the subject of this paper.
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