Objective To study health effects of long-term exposure to low-dose ionizing radiation among radiology workers. Methods Cross-sectional survey and physical examination,including general health status,hemogram,lymphocyte micronucleus,chromosomal aberration,lens turbidity,and thyroid function,were conducted among 624 radiology workers in 6 class-three hospitals in Linyi city in 2013. Results The average annual dosage of occupational radiation was less than 5 m Sv for 97. 28% of the workers surveyed; the rate ...