Objective To evaluate the health status of radiation workers in Laiwu City and the correlation between personal radiation exposure dose and haematological indices.
Methods Personal radiation doses of selected participants were measured regularly using LiF(Mg, Cu, P) thermo luminescence dosimeter and occupational health examinations were also performed. SPSS software was employed for statistical analysis. All personal dose data were appraised according to corresponding national codes and technical standards.
Results The average annual personal cumulative dose(AAPCD) was 0.74 mSv for the 340 radiation workers in Laiwu City during 2010-2014. Categorized by job title, the interventional radiologists presented the highest AAPCD value of 1.58 mSv and the dental radiologists the lowest of 0.44 mSv(P < 0.05). No statistical differences in average annual cumulative dose were found across radiation workers grouped by service length(P>0.05). The abnormal rate of hemoglobin of the interventional radiologists was 37.50%, higher than the other radiation workers(P>0.05). Positive correlations were found of the AAPCD with white blood cell count(r=0.059, P=0.020) and platelet count(r=0.092, P=0.001).
Conclusion Long-term low-dose X-ray exposure could affect the physical health conditions of medical workers exposed to radiation.
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