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Objective:To analyze the abnormal dose monitoring result of radiation staff in medical institutions and provide a basis for standardizing the personal dose management of radiation staff in medical institutions.Methods:Through the occupational radiation disease monitoring subsystem of the National Radiation Health Information Platform, 516 individual dose monitoring abnormal result of 410 radiation workers in a single monitoring period, which in 168 medical institutions under the 18 cities in Henan province were collected from 2020 to 2022 as research objects. Based on gender, age, length of service, occupational category, medical institution level, whether the dosimeter wearing standard, the abnormal result of radiation workers were grouped to analyze the influencing factors of individual dose monitoring result.Results:The incidence of abnormal individual dose monitoring result in 2020-2022 was 6.83 × 10 -3, 5.22 × 10 -3 and 6.30 × 10 -3, respectively. Abnormal results were mainly distributed in male radiology workers (66.83%), diagnostic radiology (59.51%) and interventional radiology (34.63%), tertiary (54.39%) and secondary medical institutions (36.34%). In the case of wearing personal dosimeter in a standard or irregular way, there were statistically significant differences in the incidence of abnormal outcomes between different levels of medical institutions and different occupational categories( χ2=14.42, 6.56, 32.96, 177.15, P<0.05). The median annual individual dose of radiology workers with " abnormal exposure dose" due to increased workload was 3.95 mSv, and the annual individual dose of interventional radiology workers was higher than that of radiotherapeutic workers ( Z=5.07, P<0.05). Conclusions:The education and training of radiological protection should be strengthened, and the wearing of individual dosimeters should be standardized; focus on the occupational exposure of interventional radiology staff, and take effective measures to reduce their exposure dose.
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Objective:To summarize the levels of individual dose to radiation workers in Shandong province from 2016 to 2020, and to analyze the trends in their change in order to provide scientific basis for radiation workers′ health management.Methods:The experimental detection and quality control were carried out in compliance with the national standards Specifications for individual monitoring of occupational external exposure (GBZ 128-2019) and the Testing criteria of personnel dosimetry performance for external exposure (GBZ 207-2016). The result of the personal dose monitoring of occupational external exposure of all radiation workers monitored by the Centers for Disease Control and Prevention in 16 cities of Shandong province were retrospectively analyzed by using SPSS 23.0 software.Results:The total number of monitored workers were 25 523 with an average annual individual effective dose of 0.28 mSv. There were statistically significant differences among radiation workers in different years ( H= 2 815.91, P<0. 001). The average annual individual effective dose showed an upward trend followed by a downward trend. The average annual effective dose of 0.55 mSv for nuclear medicine radiation workers in medical applications was the highest, with statistically significant differences among different occupational radiation workers ( H=310.37, P<0.001). The average annual effective dose of 0.37 mSv for radioactivity logging workers in industrial applications was the highest, with statistically significant differences among different occupational radiation workers ( H=448.07, P<0. 001). The average annual effective dose to radiation workers in medical applications was higher than in industrial applications ( Z = -14.93, P<0.001). Conclusions:The average annual effective dose to nuclear medicine radiation workers in medical applications and logging radiation workers in industrial applications are relatively high. There would be a push to furthe improve workplace protection measures and strengthen the management and supervision of radiological workers.
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Objective To investigate the occupational health status of radiation workers in Dezhou, China, explore the effects of low-dose ionizing radiation on the health of radiation workers, and provide a basis for improving the health of radiation workers. Methods A total of 1101 radiation workers in Dezhou who underwent occupational health examination in 2021 were selected. The effects of physical examination type, type of work, sex, length of service, and age on the health status of radiation workers were compared and analyzed. Results The abnormal rates of abdominal color Doppler ultrasound and eye lens were significantly higher in pre-post radiation workers than in radiation works (P < 0.05). The abnormal rates of eye lens increased with the length of service in radiation workers (P < 0.05). The abnormal rate of abdominal color Doppler ultrasound in male workers was higher than that in female workers, while the abnormal rates of blood routine and thyroid function were higher in female workers than in male workers (P < 0.05). Conclusion The abdominal rates of color Doppler ultrasound and eye lens are relatively high among radiation workers in Dezhou. It is necessary to improve the protection awareness and strengthen the level of radiation protection, so as to ensure the occupational health of radiation workers.
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Objective:To study the effect of occupational X-ray exposure on non-cancer diseases of radiation workers.Methods:The medical X-ray workers in Chongqing mumicipality were surved in 1980. In 2020, the previous 91 medical institutions distributed across 41 districts and counties of Chongqing continued to be selected as the survyed units, including 53 grade-A top-class hospitals. Using the method of prospective cohort study, the fifth follow-up survey was conducted for Chongqing′s medical X-ray workers and the control groups in 1980 with respect to their personal information, occupational radiation exposure, disease history and others. The incidence rate, relative risk ( RR) and 95% confidence interval of diseases in each system were analyzed. Results:There were 937 individuals in this cohort. So far, 359 cases of non-cancer diseases had been counted. Compared with the control group, the relative risk RR of cardiovascular system, ophthalmology and other unclassified diseases in the exposure group were 1.50, 2.03 and 2.64 ( χ2=5.97, 3.97, 4.25, P <0.05) , respectively. The adjusted confounding factors showed that the RR of the incidence rate of cardiovascular, ophthalmic and digestive diseases in the female exposure group was generally higher than that in the control group ( RR=2.33, 2.59, 7.55; χ2= 7.28, 4.17, 8.64, P < 0.05) , respectively. The RR of the incidence rate of cardiovascular and ophthalmic diseases in exposure group was generally higher than that in the control group among 25-29 year-old workers ( RR=2.26, 5.07; χ2 =8.22, 4.91, P < 0.05) , respectively. For compasion between the the accumulated dose groups, the incidence rate of cardiovascular system, ophthalmology and digestive system diseases in the exposure group was generally higher than that in the control group ( RR=1.86, 2.91, 3.59; χ2= 9.83, 8.21, 5.58, P < 0.05) , respectively. Conclusions:The non-cancer risk of X-ray workers exposed to long-term occupational exposure was increased, among which the risk of cardiovascular system, digestive system, ophthalmic diseases and others might be related to the occupational exposure.
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Health monitoring of radiation workers is an important part of the radiation protection system. Occupational health examination is very important for the safe use of nuclear energy technology. This article analyzes the detection results of radiation-sensitive indicators reported in the literature to investigate the health status of radiation workers and to provide a reference for the further study of sensitive indicators in health monitoring of radiation workers.
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Objective To analyze and master the allocation and distribution of radiological diagnosis and treatment resources in Nanjing, China, and to provide a basis for the health administrative departments to reasonably plan and allocate the radiological diagnosis and treatment resources in the whole city. Methods A general survey using the questionnaire on general information of radiological diagnosis and treatment institutions was conducted to investigate the amount and type of radiological diagnosis and treatment equipment and number of radiation workers in medical institutions in the whole city. Results There were totally 347 radiological diagnosis and treatment institutions at all levels involving 3999 radiation workers and 1342 sets of radiological diagnosis and treatment equipment in Nanjing. In urban radiological diagnosis and treatment institutions, there were 2798 (69.99%) radiation workers and 842 (62.74%) sets of radiological diagnosis and treatment equipment, more than those in the suburbs (1201 and 500 sets). There were 27 (7.78%) tertiary radiological diagnosis and treatment institutions, with 629 (46.87%) sets of radiological diagnosis and treatment equipment, which was more than those in the primary (287), secondary (189), and ungraded (237) medical institutions. There were 158 sets of radiological diagnosis and treatment equipment and 470 radiation workers per million people in Nanjing. Conclusion The distribution of radiological diagnosis and treatment equipment in Nanjing is uneven between urban and suburban areas and between various levels of medical institutions. The government and health administrative departments need to enhance the macroscopic readjustment and control, thus promoting the reasonable allocation of medical resources.
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Objective:To investigate the exposure level of ionizing radiation in medical radiation workers in Guangdong province, as well as their abnormality in the lens of the eye, and to analyze associated influence factors.Methods:In this study, 1 501 radiation workers from 60 hospitals were selected by using convenient sampling method for retrospecotive analysis of absorbed doses ( DL) to the lens of the eye, health examination information and the relevant influence factors. Results:The median value M and the 25 th and 75 th percentile values ( P25, P75)of the distribution of absorbed doses were 4.86, 2.99 and 7.90 mGy, respectively. The median values for male and female were 5.14 and 3.94 mGy, respectively. The median values for the Levels I, Ⅱ and Ⅲ medical institutions were 2.95, 3.51 and 5.06 mGy, respectively. The median values were radiotherapy 4.05 mGy, radiodiagnosis 4.84 mGy, interventional radiology 5.39 mGy and nuclear medicine 6.71 mGy, as well as nurses 3.48 mGy, physicians 5.03 mGy and technologists 5.03 mGy, respectively. There were statistically significant differences in dose distribution for different gender, age, length of radiation service, age at the beginning of radiation exposure, level of medical institution, occupational category and post ( Z=-6.72, H=389.64, 511.17, 70.29, 53.29, 49.06, 39.89, P<0.05). The detectable rate for increased cortical density of lens was 22.45% (337/1 501) and for lens turbidity was 8.19% (123/1 501). The detectable rate of increased cortical density showed a linear increasing trend with the increase in age, age of radiation service, age at the beginning of exposure to radiation, level of medical institution and dose ( χ2=366.36, 313.77, 15.18, 21.61, 92.13, P<0.05). The detectable rate of lens opacity increased linearly with the increase in age, length of radiation service, level of medical institution and dose( χ2=69.64, 67.65, 67.65, 37.37, P<0.05), and decreased linearly with the increase in age at the beginning of radiation exposure ( χ2=4.25, P<0.05). Logistic regression analysis showed that age was the influencing factor of increased cortical density ( χ2=165.98, P<0.05), and the risk of cortical densification increased with age ( OR=1.33, 95% CI: 1.27-1.39). Age, length of radiation service and occupation were the influencing factors of lens opacity ( χ2=25.78, 4.99, 6.88, P<0.05). The risk of lens opacity increased with age ( OR=1.17, 95% CI: 1.10-1.24). The risk of lens opacity increased with age of radiation service ( OR=1.06, 95% CI: 1.01-1.12). The risk of ocular opacity was higher in interventional radiology than that in diagnostic radiology, radiotherapy and nuclear medicine ( OR=2.59, 95% CI: 1.27-5.25). Conclusions:Long-term exposure to low dose ionizing radiation has a certain correlation with the abnormal lens detectable rate of medical radiation workers. Age, length of radiation service and occupation are the influencing factors of lens opacity.
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Through the development of the guidance for case handling of radiological health law enforcement, health supervisors are instructed to accurately grasp the key points of law enforcement and case handling and standardize the process of collecting evidence and law application to ensure the correct implementation of administrative penalty. This article explains the structure and content of the guidance for case handling of radiological health law enforcement by taking the case of arranging radiation workers who have not undergone an occupational health examination to engage in the radiological occupational-disease-inductive operation in medical institutions as an example.
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@#<b>Objective</b> To analyze the abnormality of radiation damage sensitive indices in radiation workers after operation of a third-generation nuclear power plant in Guangdong Province, China, and to provide a basis for promoting the occupational health management of radiation workers. <b>Methods</b> A two-way cohort study (2019—2021) was conducted to compare the radiation sensitive indices of occupational health examination in the exposed group (453 subjects) and the control group (160 subjects). <b>Results</b> In 2021, the free triiodothyronine (FT3) level of the exposed group was significantly higher than that of the control group [(5.57 ± 0.56) pmol/L <i>vs</i> (5.42 ± 0.60) pmol/L, <i> t</i> = 0.59, <i>P</i> < 0.05]. From 2019 to 2021, the exposed group showed significant changes in the average levels of platelet, hemoglobin, FT3, free thyroxine (FT4), and thyroid-stimulating hormone (<i>P</i> < 0.05); FT3 and FT4 first increased and then decreased, while TSH decreased continuously. <b>Conclusion</b> Long-term exposure to low-dose ionizing radiation from nuclear power plants can affect the platelet, hemoglobin, FT3, FT4, and thyroid-stimulating hormone of radiation workers, and the effect is relatively prominent on thyroid function by causing a tendency to hypothyroidism.
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@#<b>Objective</b> To analyze the monitoring results of external exposure dose of interventional radiology staff in a tertiary general hospital in Beijing, China, 2018—2020, and to provide a basis for safe guarding staff health and hospital radiation protection management. <b>Methods</b> A total of 321 interventional radiology staff in a hospital in Beijing were selected to collect information on the types of interventional work, positions, and personal dose monitoring results in 2018—2020. The dose monitoring results were analyzed using SPSS 22.0. <b>Results</b> The effective monitoring rate for the three years was 78.82%, 81.65%, and 96.85%, respectively, showing an increasing trend (<i>χ</i><sup>2</sup><sub> trend</sub> = 16.134, <i>P</i> < 0.001). The annual dose equivalent per capita was 0.142, 0.142, and 0.265 mSv, respectively. The annual dose equivalent per capita in 2020 was significantly higher than those in 2018 (<i>H</i> = 24.562, <i>P</i> < 0.001) and 2019 (<i>H</i> = 39.378, <i>P</i> < 0.001). The annual dose equivalent per capita in 2020 was in the order of interventional clinician > interventional nurse > technician (<i>H</i> = 10.699, 6.562, <i>P</i> < 0.01). The annual dose equivalent per capitain 2020 was higher in the cardiology interventional department than in the comprehensive interventional, neuro interventional, and vascular surgery departments (<i>H</i> = 35.530, 37.614, 35.496, <i>P</i> < 0.001). <b>Conclusion</b> The number of interventional radiology staff monitored from 2018 to 2020 increased year by year, so did the effective monitoring rate.The external exposure dose was at low levels, which generally meets the requirements of national occupational exposure limits. Training on radiation protection for interventional radiology staff should be further strengthened to raise awareness of radiation protection.
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@#Abstract: Objective （ ） To evaluate the internal exposure levels and risk in nuclear medicine workers NMWs engaged in Methods radionuclide therapy in Guangdong Province. A total of 61 NMWs from eight hospitals in Guangdong Province were selected as the study subjects using the convenient sampling method. The 0.364 MeV full energy peak efficiency was detected in （ ） in vitro ， - deltoid muscle of right upper arm as background and thyroid gland by direct measurement method and the iodine 131 （131 ） Results ，131 I activity in thyroid gland was calculated to evaluate the internal irradiation level. Among the 61 NMWs I was ， detected in the thyroid gland of four nuclear medical staffs in three hospitals and the detection rate was 6.6%. The median and - ［M（ P-P ）］ 131 （ - ） 0 100 percentile 0 100 of thyroid I activity were 42.9 35.1 47.1 Bq. When assuming that the monitoring period was ， M（ P-P ） （ - ） ， 30 days the 0 100 of single committed effective dose in thyroid gland was 0.014 0.011 0.015 mSv and the annual dose （ - ） Conclusion of internal irradiation was 0.162 0.132 0.180 mSv/a. The internal exposure of NMWs in the eight hospitals in （ ） ， Guangdong Province meets the annual effective dose limits ≤20.000 mSv/a . However it is necessary to pay attention to the internal radiation protection of NMWs and take reasonable protective measures to reduce the internal exposure risk of NMWs.
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Objective:To investigate the effect of low-dose ionizing radiation on blood cell parameters of radiation workers.Methods:A total of 124 staff members engaged in radiology were selected into the observation group, and they were divided into 4 subgroups of physicians, physicists, technicians, and maintainer according to their jobs. A total of 130 non-radiation-related staff members from the same hospital were selected into the control group. Blood cell parameters of peripheral blood of all subjects from 2016 to 2019 were collected, and the differences in blood cell parameters between the radiation group and the control group as well as 4 subgroups of the control group were analyzed and compared, and the correlation between the differences in blood cell parameters and the cumulative radiation dose was compared.Results:Compared with the control group, the white blood cell count, neutrophil count, red blood cell count and hemoglobin count in the observation group were lower than those in the control group (all P<0.05). There are no significant differences in cumulative radiation dose among different types of work (all P>0.05). Correlation analysis showed that the blood cell parameters of peripheral blood cells were not significantly correlated with the cumulative radiation dose. The blood cell count changes after 4-year low-dose ionizing radiation between the physicist group, the technician group and the maintainer sub-group were significantly different (all P<0.05), but the above differences were not related to the cumulative radiation dose (all P>0.05). Conclusions:Under the same exposure and protection conditions, the blood cell counts of different radiation-related workers are not significantly different, and the long-term cumulative radiation dose has no significant correlation with blood cell parameters. Therefore, peripheral blood cell parameters can no longer be used as a good indicator to reflect radiation damage, and it is urgent to find more convenient, intuitive and sensitive indicators of radiation damage.
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Objective To explore radiation protection cognition and mental health status of the staff in the second level and lower hospitals of a certain city. Methods Design a questionnaire on radiation protection knowledge and conduct a mental health test. The content of the questionnaire includes 26 questions in 2 dimensions, including general personal information and radiation protection knowledge. Among them, there are 20 questions about radiation protection knowledge. the self-rating symptom scale (SCL-90) is selected for the mental health test, with a total of 90 questions. Results The average score of the radiation protection knowledge question survey was (13.62 ± 2.21) points. The accuracy is less than 60% 102 people (16.04%); 60%~79% 430 people (67.61%); ≥ 80% 104 people (16.35%). SCL90 test indicates that 38.99% (248/636) of radiation workers is poor in mental health, the scores of each main factor are higher than the national norm. Among them, the somatization, obsessive-compulsive symptoms, interpersonal sensitivity and anxiety of radiation workers were relatively significant, with statistical differences (P < 0.05). Conclusion The overall cognition level of radiation protection staff in primary hospitals of a certain city is very low, therefore, training and supervision need to be strengthened. There are still some radiation workers whose mental health is not good, and active psychological intervention measures should be taken.
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Objective To ascertain the levels and distributions of individual dose of radiologic workers arising from external exposure in medical institutions in Yangpu District during 2018—2020, so as to provide basic data for the prevention of occupational radiation diseases. Methods Based on the individual dose monitoring specifications for occupational external exposure, the individual dose of radiologic workers was monitored by the thermoluminescence dosimetry systems, and the data were collected and analyzed. Results A total of 2082 people were monitored from 2018 to 2020, and the average annual effective dose per capital was 0.20 mSv·a−1. The average annual effective dose per capital in 2020 was lower than that in 2018 and 2019, and the difference was statistically significant (P < 0.05). The average annual effective dose of 4 radiologic workers exceeded 5 mSv·a−1 per capital. The average annual effective dose of diagnostic radiology was 0.20 mSv·a−1, which was higher than that of dental radiology and other medical applications, and the difference was statistically significant (P < 0.05). The average annual effective dose per capital of nuclear medicine was 0.34 mSv·a−1, which was higher than that of other medical categories, and the difference was statistically significant (P < 0.05). The average annual effective dose per capital in unrated hospitals was 0.14 mSv·a−1, which was lower than that in tertiary hospitals and secondary hospitals, and the difference was statistically significant (P < 0.05). Conclusion The average annual effective dose per capital of radiologic workers in medical institutions in Yangpu District is generally kept at a low level. The radiation protection of radiologic workers in nuclear medicine, secondary and tertiary hospitals should be strengthened to reduce the occupational external exposure doses to the lowest level as possible.
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Objective To analyze the medical examinations of radiation worker in medical institutions and provide some basic data for radiation protection management. Methods The occupational health examination of 3568 radiation workers from 681 medical institutions who came to our hospital for occupational health examination from January 1 to December 31 in 2020 were summarized and analyzed. Results There was no case of suspected occupational radiation sickness. The abnormal rate was in the range of 2.17%～2.99%, the rate of occupational contraindicated was about 1.44%～2.17%. The total review rate was about 13.00%, more than 79.48% of the radiation workers were checked out other diseases or abnormal. The abnormal examination items are mainly ophthalmology, B ultrasound of liver, gallbladder, spleen and pancreas, liver function, electrocardiogram, blood routine, urine routine, blood pressure, B ultrasound of both kidneys and kidney function. The abnormal rate of ophthalmology in each level of institutions was decreased with the increase of the length of service, while the abnormal results of B-ultrasound of liver, gallbladder, spleen and pancreas, blood pressure, B-ultrasound of both kidneys and renal function were increased with the increase of service. Conclusion Maybe the radiation protection of radiation workers in medical institutions was well in Shenzhen, but there were different effects of the health status of the staff. Therefore, it is important to further strengthen the occupational health monitoring management.
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Objective To analyze the abnormal results of individual dose monitoring of some radiation workers in Chengdu from 2016 to 2018, so as to take corresponding measures to avoid similar abnormal situations. Methods The individual dose was monitored by thermoluminescence method, and the monitoring results were analyzed by spss19.0 statistical software. Results From 2016 to 2018, the number of people with abnormal dose was basically the same, and there was no significant difference in the number of people with abnormal dose in different years (P > 0.05); the number of people engaged in diagnostic radiology with abnormal personal dose accounted for 75.96%; the first reason for the abnormal personal dose was that "the personal dosimeter had been left in the radiation workplace", accounting for 92.55%. Conclusion The main reason for the abnormal results is that the dosimeter is not worn properly, so the management should be further strengthened.
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objective This paper analyzes the physical examination results of blood routine, chromosome deformity rate, micronucleus rate and thyroid function test of some radiation workers in Chongqing from 2018 to 2019, understands the occupational problems of radiation workers, and provide scientific basis for putting forward reasonable suggestions method:Methods 2656 cases in 2018 and 2922 cases in 2019 were selected through the information platform of physical examination system. A total of 5578 physical examination results in two years were statistically analyzed and analyzed. Results The abnormal rate of blood routine, the detection rate and abnormal rate of chromosome distortion and micronucleus, and the abnormal rate of thyroid gland function (T3, T4, TSH) between the control group and the radiation group are significant differences (P < 0.05). There were significant differences in the abnormal rate of blood routine, thyroid function (T3, T4, TSH), chromosome teratosis rate, micronucleus detection rate and abnormal rate between radiation diagnosis and treatment and industrial flaw detection, but there was no significant difference in the abnormal rate of chromosome (P > 0.05). There was significant difference between < 10 year group and 10 ～20 year group, and there was significant difference in platelet, white blood cell and hemoglobin between 10 ～20 year group and 20 year group (P < 0.05). There was no statistical significance in erythrocyte difference (P > 0.05). There was significant difference in the abnormal rate of thyroid function among the three working age segments (P < 0.05). The detection rate of chromosome distortion was significantly different between < 10 years group and 10 ～20 year group (P < 0.05), but there was no significant difference between the other two groups (P > 0.05). There was significant difference in the abnormal rate between the two groups (P < 0.05). There was no significant difference in pairwise comparison of micronucleus detection rate among groups (P > 0.05), but there was significant difference in abnormal rate among groups (P < 0.05). Conclusion The long-term low dose ionizing radiation environment will damage the hematopoietic and endocrine system of radiation sensitive human body.
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Objective To investigate and analyze the current situation of nuclear technology utilization and radiation workers' occupational health management in non-medical institutions in Huai'an City, and to strengthen the prevention and control of occupational radiation diseases. Methods 37 non-medical institutions of nuclear technology utilization in Huai'an City were surveyed by questionnaire, including radioisotope and radiation apparatus, personal dose monitoring of radiation workers, implementation of occupational health examination, protective equipment, etc. Results The industry covers manufacturing industry, transportation, warehousing and postal industry, scientific research and technical service industry, residential service, repair and other service industries, 0 class I radiation device, 15 class II radiation devices, 67 class III radiation devices; 0 class I and II radiation sources, 1 class III radiation device, 16 class IV radiation sources, 51 class V radiation sources, 1 unsealed radioactive material Class B workplace; 493 radiation workers, 90.5% with certificates, 85.4% with personal dose monitoring rate, rate of 37.8% with radiation protection monitoring equipment, and 68.0% with occupational health examination rate. It has 13 institutions equipped with personal protective equipment, 23 with dose alarming devices and 14 with radiation protection monitors. 30 radiation workplace tests have been carried out in the past two years. Conclusion The occupational health management of radiation workers in non-medical institutions is weak. At present, the responsibility of occupational health supervision has been assigned to the health department. Therefore, the health administrative department should strengthen the supervision of non-medical nuclear technology utilization institutions and improve the emergency mechanism of radiation emergencies in Huai'an city.
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Objective To investigate the micronucleus rate of peripheral blood lymphocytes in radiation workers exposed to chronic low dose ionizing radiation in Jiangsu province to adopt corresponding protective measures. Methods From January to December 2019, 504 in-service radiation workers were taken as the radiation group, 105 healthy adults who were to be engaged in radiation work by pre-job occupational health examination were served as the control group. We compared the micronucleus rate of peripheral blood lymphocytes measured by conventional culture. Results The micronucleus rate in the radiation group was significantly higher than that in the control group (P < 0.001) and the micronucleus rate in the female radiation workers was higher than that in the male (P < 0.01); The difference of micronucleus rate in different age groups was statistically significant (P < 0.05), among which aged 41～50 years being higher than that of those aged 21～30 years. Besides, The difference of micronucleus rate between different working age groups was statistically significant (P < 0.05), with higher rates in the 21～30 year range than in the 0～10 year range. (P < 0.05). Differential micronucleus rates among different types of work were statistically significant (P < 0.01), with the highest rate of micronucleus among staff in radiotherapy positions compared to other positions. What’s more, the highest rate of micronucleus among radiology staff in units of different levels was found in municipal hospitals, with statistically significant differences in micronucleus rates between provincial hospitals, enterprises (P < 0.05) and municipal hospitals (P < 0.01). Conclusion The micronucleus rate of radiation workers was significantly higher than that of non-contact personnel, and the micronucleus rate of female radiation workers is higher than that of men. Moreover, the highest rate was found among radiation workers. Therefore, radiation protection and daily management of this population should be strengthened.
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Objective To investigate the correlation between smoking, white blood cell counts, and serum bilirubin levels in male radiation workers, and to explore the role of systemic inflammatory response in the changes of serum bilirubin level induced by smoking. Methods Occupational health examination data of 1 320 male radiation workers in a medical institution was collected. Linear regression analysis method was used to analyze the correlations between smoking and white blood cell counts, between smoking and serum bilirubin levels, and between white blood cell counts and serum bilirubin levels. Results There was a significant positive correlation between smoking and white blood cell counts (P 0.05). By dividing white blood cell counts into two groups, an inverse correlation was found between smoking and serum bilirubin levels in the high white blood cell count group (P < 0.05). Conclusion Serum bilirubin may be an effective indicator of early health damage caused by smoking in male radiation workers. Smoking may induce inflammatory reaction, thus deplete serum bilirubin and cause its levels to drop.