Occupational health risk recognition, evaluation, and management of radiation workers in Gansu province, China

Abstract

ObjectiveIn order to protect the health of radiation workers, scientific management of radiation workplace protection is implemented, and occupational health risks of radiation workplaces in Gansu Province, China are identified and evaluated through monitoring. MethodsThe basic situation of occupational health management of radiological workers in 1366 radiological diagnosis and treatment institutions was investigated, and 596 monitoring hospitals were selected for occupational health monitoring. Using a 2-IN∗2-in NaI (Tl) scintillation spectrometer and its supporting software, internal thyroid irradiation monitoring was performed. Fifty-one underground workers in a deep mine iron mine were selected to monitor the effect of high radon exposure. Results11 (6%) monitored hospital interventional radiology staff detected lead outside the aprons between 5 mSv and 20 mSv during a single monitoring period; In nuclear medicine, radiation monitoring in the thyroid detected 3(15%) people with doses between 5 mSv and 20msv.The chromosome aberration rate and Detection rate of posterior pole subcapsular opacification of interventional radiation group and nuclear medicine group was higher than that of conventional radiation group, and the difference between interventional radiation group and conventional medicine group was statistically significant. Abnormal detection of tumor markers in serum after sustained radon exposure accounted for 39.2% of NSE(neuron-specific enolase), 22.5% of SCC(squamous cell carcinoma associated antigen), and 5.9% of CyFRA21-1(cytokeratin 19 fragment), respectively, chest low-dose CT showed plaque and stripe shadow in 21 cases (41.2%) and nodules in 16 cases (31.4%). ConclusionIndividual dose monitoring found that radiation workers engaged in interventional radiology were exposed to higher doses and had higher occupational risks. The results of occupational health examination show that there is a certain degree of radiation injury in interventional radiology and nuclear medicine workers. Nuclear medicine radiation monitoring results show that some workplaces have radioactive contamination. The radon exposure of deep mine miners has a higher occupational risk of lung cancer caused by high radon.The analysis of chromosome aberration is an important index of occupational health monitoring of radiation workers.