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| Investigation and analysis on current situation of radiation protection in some nuclear medicine in Hebei Province |
| JIANG Lihong1, LI Peng1, LI Xiaopeng1, CHEN Yan2, LIANG Zhiling2, ZHANG Yuanyuan1, LIU Junyan1, LIU Yong1 |
1. Shijiazhuang Prevention and Treatment Center of Occupational Disease, Shijiazhuang 050031 China;
2. Kaijiefangda Detection Technology Hebei Company Limited |
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Abstract objective To master the present situation of radiation protection in some nuclear medicine workplaces and radiation workers in Hebei Province and to provide data support for strengthening radiological health supervision and developing standards related to nuclear medicine.Methods Ambient dose equivalent rates were measured by X and gamma radiation dosimeters for 16 nuclear medicine workplaces in Hebei Province, and beta surface contamination of workplaces and staff were measured by alpha and beta surface contaminators; The deep individual dose equivalent Hp(10) of 77 nuclear medical staff was monitored by thermoluminescence dose method, and occupational health test reports of the 77 nuclear medical staff were reviewed in the recent two years.Results There was statistical difference in the radiation level between all detection points in the SPECT(/CT) workplace (F = 32.02, P < 0.05), in which the ambient dose equivalent rates of the administration window (nurse operating position) was the highest. which was 11.92 to 37.77 μSv/h, with an average of (19.19 ±8.78) μSv/h; There was a statistical difference in radiation levels between detection points in the PET/CT workplace (F = 56.72, P < 0.05), in which the ambient dose equivalent rates of the administration window (nurse operating position) was 14.28 to 21.55 μSv/h, with an average of (16.55 ±3.87) μSv/h; In 16 nuclear medical workplaces, the average surface contamination level met the standard requirements. Two (12.50%) of the staff's work clothes and eight (50.00%) of their hands surface contamination level exceeded the standard in terms of surface contamination. The external exposure individual dose level of 77 nuclear medical staff was (1.11 ±0.65) mSv. None of the 77 radiation workers were found apparent skin abnormalities, but 12 (15.58 %) had some abnormalities in tissues and organs that were more sensitive to ionizing radiation. There were no significant differences found in the ocular lens abnormalities and chromosome abnormalities of the persons with exposure time of more than 20 years compared with other age groups.Conclusion Radiation protection in the nuclear medicine workplace under investigation was in good condition, but the staff's own protection needs to be strengthened; Further attention should be paid to the occupational health management of nuclear medical personnel.
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Received: 23 August 2019
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