The impact of Radiation on Total Thrombocyte of Hospital Radiology Workers in Kupang

Ionizing radiation that used in diagnosis and treatment process in hospital is not only providing the benefits, but also has negative impact on health. The officer in radiology installation of hospital has high risk of decreased number of thrombocyte, due to exposure experienced countinously during the work. The previous study using mice as object of research, found that exposure to ionizing radiation resulting in a decrease in the number of thrombocytes. Decreased total thrombocytes caused by the damage to cell. Thrombocytes destruction post-irradiation is 15 times faster than the recovery. This study aimed to analyze the effects of radiation exposure on the total thrombocyte of workers in radiology installation in hospital of Kupang. Subjects in this study were 20 workers from 3 hospitals selected by purposive sampling technique. This research was an observational analytic with cross sectional approach. Data used are exposure doses and blood examination results carried out together within a period of 1 year. The result was shown that the average dose of radiation exposure received by the officer during working for 1 year was 0.776 mSv. This value was still relatively safe because it was below the dose limits set by International Commision for Radiation Protection (ICRP). However the result of the analysis was shown that there was significant effect between radiation exposure dose received by the officer with total thrombocytes p-value 0.05. The regression equation was shown that the increase of 1 unit dose would decrease the number of thrombocytes was 10.3. The regression coefficient R² = 0.197 shown that the effects of radiation exposure dose against the decrement of total thrombocytes was 19.7%. It was recommended for the workers and hospital management to increase the efforts against radiation protection, thus the stochastic effects of exposure could be minimized.