Abstract
Effective collective, mean population doses as well as radiation risks for the Ukrainian population and separate regions of Ukraine due to radiodiagnosis have been calculated. Data about the structure and the number of examinations and the age of the patients were used. Individual effective doses were determined according to ICRP Publication 60. It has been established that the frequency of diagnostic and prophylactic X ray examinations in 1994 was 600 per 1000 persons. The frequency of CT examinations was 2.8 per 1000 persons. That of diagnostic nuclear medicine examinations was 5 per 1000 persons. Effective collective dose to the patients due to X ray procedures was 26,250 in 1994, that of radionuclide examinations was 320 man.Sv. Mean population dose due to these examinations was about 0.5 mSv.y -1 . The levels of population exposure due to X ray examinations in Ukraine have decreased about twice during the past 10 years. The causes of this are reduction in the number of examinations (especially in the regions contaminated with radionuclides) and change in methods (reduction of the number of the main dose-forming fluoroscopy methods). Collective dose due to CT examinations was approximately 790 man.Sv, or 3% of the value for X ray diagnosis and 2.5 times more than for diagnostic nuclear medicine examinations. Radiation risks for the Ukrainian population caused by radiodiagnosis in 1994 were calculated: the total number of fatal and non-fatal cancers was 1116, the number of serious hereditary disturbances was 96.
Published Version
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