[The relationship between the spontaneous frequency of chromosome aberrations and the change in their frequency...

Changes in chromosomal aberration rates, analysed for women 35-60 years of age exposed to 0.5-2 cGy during the mammography, suggested a relationship between the initial rates of chromosomal aberrations and those caused by the procedure. The spontaneous level of cytogenetic changes is assumed to be indicative of the degree of body radiosensitivity.