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[The inherent dynamics of radiological diagnosis and ways of controlling it].

The persistent increase in the number of radiological investigations, which has been going on for several decades, has been called its "inherent dynamics" by Rausch. An analysis of the figures has shown that it is due not only to increasing use on the part of doctors and hospitals, but is particularly the result of an increase in the number of examinations per patient. Suggestions for limiting the increase are discussed, particularly a more stringent control of the indications by the radiologists, prevention of repetitious examinations and avoidance of qualitatively unsatisfactory examinations.