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ObjectiveTo analyze the quality and status of technical service items of radiation health technical service institutions (RHTSI) in China. Methods A total of 608 and 622 RHTSIs with radiation health technical service qualifications from 31 provinces, autonomous regions, and municipalities in the years of 2021 and 2022 were selected as the research subjects. The data of quality monitoring of radiological health technology services, comparison of radiological health testing capabilities, and investigation of the current status of technical support institutions were collected to analyze the status of technical service items which was conducted by RHTSIs from 2021 to 2022. Results A total of 622 RHTSIs in China obtained technical service institution qualifications in 2022, an increase of 14 from 608 in 2021. While a total of 404 of 622 RHTSIs conducted radiological health technology services, a decrease of 11.4% from 456 in 2021. A total of 241 804 technical service items were conducted in 2022, an increase of 39.7% from 173 064 in 2021. The median number of technical service items by non-health system RHTSIs was higher than that of the health system RHTSIs in 2021 and 2022, (203 vs 40 items, 215 vs 55 items, all P<0.01). The number of technical service institutions and technical service items conducted in different regions from high to low were the eastern, central, and western regions in 2021. The number of technical service institutions in different regions was highest in the eastern region, followed by the central and western regions, while the number of technical service items from high to low were the eastern, western, and central regions in 2022. The number of provincial, municipal, and county-level health system RHTSIs decreased by 6.5%, 26.3%, and 27.3%, respectively, in 2022 compared with 2021. The number of technical service items conducted by provincial health system RHTSIs increased by 48.6%, while those conducted by municipal and county-level health system RHTSIs decreased by 13.8% and 21.3%, respectively. Conclusion Although the number of RHTSI conducting technical services decreases in 2022 compared with 2021, the number of technical service items conducted increases. Non-medical RHTSI undertake the majority of technical service items. Within the medical institutes, the number of technical service items conducted by provincial RHTSI is higher than that of municipal and county-level RHTSI.
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Objective To investigate the current situation of radiological health technical service institutions and their technical services in China, and to provide a basis for better utilizing radiological health technical service resources and strengthening institutions’ capability building. Methods From October to December 2021, we conducted quality monitoring, ability comparison, capability building surveys, and other investigations on radiation health technical services to collect information on the qualifications and technical services of radiation health service institutions. The data were pooled and analyzed using SPSS software. Results By the end of 2021, there were 608 radiological health technical service institutions across China, with 47.0% of them located in the eastern region, and the percentage of institutions in the health system (42.6%) was less than that in the non-health system (57.4%). Institutions of grade A offered 62.3% of technical services, while institutions of grade B provided 37.7% of technical services; technical services provided by the non-health system and the health system accounted for 84.2% and 15.8%, respectively; institutions in the health system at the province, prefecture, and county levels offered 37.1%, 50.6%, and 12.3% of technical services, respectively. Conclusion In recent years, the proportion of institutions in the non-health system has increased significantly, but the proportion of institutions in the health system with radiological health qualifications is small, and the development is uneven in the numbers of institutions, technical services, and professional and technical personnel in the eastern, central, and western regions and at the province, prefecture, and county levels in China. It is necessary to further encourage and support health system institutions in strengthening capability building and applying for radiological health qualifications, and to increase construction and investment in the western region and at the district/county levels, in order to improve the overall capability and level of radiological health technical services in the country.
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Objective:To summarize and analyze the results of the individual dose intercomparison in which province-level health institutions participating, and explore the role of ability intercomparison in improving the detection capabilities of province-level health institutions.Methods:From 2009 to 2022, the results obtained by the province-level CDCs and occupational prevention and control institutions in the individual dose intercomparison countrywide for time periods of 2009—2020 and 2021—2022 were summarized. The intercomparison results were analyzed and compared for three regions of east, central and west China divided according to the method from China Health Statistics Yearbook 2022.Results:A total of 24 province-level CDCs and 14 occupational prevention and control institutions countrywide participated in the ability intercomparison from 2009—2022 for 13 times. Number of participating institutions increased from 26 in 2009 to 37 in 2022. The qualified rates of the intercomparison results among the province-level health institutions in the three regions were maintained at higher than 85% for 37 times and 100% for 28 times. The pass rate and excellent rate of the three regions were higher than the overall level at whole country level (2009-2020) and national level (2021-2022) in the same period for 9 and 5 times, respectively. The excellent rate of province-level health institutions in central region were higher than that of the other two regions in 9 intercomparisons.Conclusions:With the improvement of the intercomparison standard, the province-level health institutions in various regions have maintained a relatively stable and high detection capability. The ability intercomparison effectively improve the detection ability and the quality control of the province-level health organizations. Many province-level agencies have listed the ability intercomparison as the regular work.
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In case of accidental exposure, a rapid assessment of radiation dose is of great significance for taking timely countermeasures. Finding an alternative portable emergency dosimeter is crucial for people who have been exposed to accidental radiation but are not equipped with a personal dosimeter. In addition, the real-time monitoring of radiation dose level in the normal environment can meet the needs of the public to know their health status in time. Thus, the portability and intelligence of mobile phones attract researchers to carry out related work. This article reviews the research progress in individual exposure dose estimation and monitoring based on mobile phones.
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Objective@#To improve radiation testing institutions’ ability and levels of personal dose monitoring for external exposure and standardize monitoring work.@*Methods@#According to Testing Criteria of Personnel Dosimetry Performance for External Exposure (GBZ 207—2016), the intercomparison programme was made, the 2021 class-based personal dose monitoring intercomparison were organized by the National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention and provincial monitoring institutions.@*Results@#A total of 150 institutions participated in the 2021 national intercomparison of personal dose monitoring capability. Of them, 143 (95.3%) passed the assessment, including 51 excellent institutions (excellent rate, 34.0%), and 7 (4.7%) failed to pass the assessments.@*Conclusion@#The 2021 national personal dosimetry performance intercomparison showed great improvements in the pass rate and excellent rate compared with previous national assessments. However, still seven institutions failed to pass this assessment, including four institu- tions with class A qualifications. The testing institutions need to find out the reasons to increase their testing ability. This class-based intercomparison improved the point-to-plane relationship between the organizing and testing institutions, help- ing the organizing institution focus on improving the testing ability of provincial testing institutions and class A radiation health service institutions.
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Objective:To enhance the capabilities of individual monitoring technology services for external exposure.Methods:The intercomparison results of the national individual monitoring for external exposure during 2015-2019 were presented, together with a summary and analysis provided of the main existing problems.Results:By 2019, 382 of individual monitoring technology service uints, from 30 provinces, autonomous regions or municipalities, participated in the individual monitoring intercomparisons results, involving disease control and prevention centers, occupational prevention and control institutions, research institutes, universities, nuclear industry, medical institutions, and companies. Except for slightly low in 2017, the pass rate in the other four years was above 90%. The excellence rate increased with the years.Conclusions:The capabilities of individual monitoring service units can meet the concerned requirements and provide standardized monitoring report for the period of 2015 to 2019, but with some being unqualified. These service units should carefully analyze and identify the reasons for the failure, standardize the quality control of laboratory, and improve the level of measurement and the ability of data analysis.
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Objective@#To compare the test results of domestic and imported eye lens and ring dosimeters, and master some dosimetric performance indexes of eye lens and ring dosimeters.@*Methods@#According to IEC 62387—2012 and GBZ 128—2019, the performance of the eye lens dosimeters and ring dosimeters with the domestic thermoluminescence detectors were compared with the imported thermoluminescence detectors in photon response. The dose response deviation of the im- ported eye lens dosimeter and imported ring dosimeter was studied under the same irradiation condition. The difference of linear response between imported ring dosimeter and domestic ring dosimeter was studied under the same irradiation condition. @*Results@#The same dose was irradiated to domestic and imported thermoluminescence detectors in the imported eye lens and imported ring dosimeters, and the linear correlation coefficient all met R2 > 0.999. The maximum response devi- ation of the imported eye lens dosimeter and ring dosimeter was less than 10.0% for the same dose. Two kinds of imported ring dosimeters and one kind of domestic ring dosimeter were irradiated with the same dose, and the linear correlation coefficient all met R2 > 0.99.@*Conclusion@#Both domestic detectors and imported detectors can meet the needs of monitoring re- quirements. There was no obvious difference in linear response between imported ring dosimeter and domestic ring dosimet- er. The repeatability of imported eye lens dosimeter and imported ring dosimeter met the performance requirements of the dosimeter.
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Objective In order to improve the personal dose monitoring ability of radiation health technical institutions, and standardize the detection methods and procedures. Methods Develop adetailed assessment plan according to GBZ 207—2016 “Testing criteria of personnel dosimetry performance for external exposure”, organize a national assessment of personal dose monitoring capabilities in 2020, analyze the problems arising from the assessment, and strengthen supervision and training in the future. Results A total of 457 institutions participated in this assessment, of which 421 were qualified (including 74 excellent institutions, with an excellent rate of 16.2%), and 36 were unqualified, accounting for 92.1% and 7.9% respectively. Conclusion The number of institutions that participated in the assessment this year reaches a record high, with a passing rate 4.08% higher than that in 2019. The overall monitoring capacity of the country has been greatly improved. However, some institutions still have problems such as irregular symbol writing, unupdated detection standards, and large deviations in testing data. It is necessary to improve the ability of loboratory detection and data analysis, standardize the operation process, and ensure the quality of assessment.
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Objective:To investigate the application of Aptima high-risk human papillomavirus (HR-HPV) E6/E7 mRNA (AHPV) and its genotyping (GT) in the risk assessment of low-grade squamous intraepithelial lesions (LSIL).Methods:The AHPV and its genotype (AHPV-GT) incervical exfoliated cells were detectedin 529 women with LSIL.The DNA-Based Hybrid Capture 2 HPV Test (HC2-HPV), colposcopy and cervical biopsy were performedsimultaneously.Results:① In 529 patients with LSIL, the positive rate of HC2-HPV in the group of ＜30 years old was significantly higher than that in the group of ≥30 years old (92.2％ vs 83.6％, P=0.026).There was no significant difference in AHPV positive rate among different age groups (82.5％ vs 77.7％, P=0.284).No significant difference of the genotyping (AHPV-GT) was detected between the two groups, either.In the 529 cases, 83 cases of HSIL+were confirmed by histology.81 cases (97.6％) were AHPV positive in the patients with HSIL+;② Compared with other 11 positive types of HR-HPV, the incidence of HSIL+in GT+ women increased significantly (P＜0.05).In the group ≥30 years old, the OR value of HSIL+exposure risk of AHPV16 positive women was the highest (141.00), which was significantly higher than that of 18/45+, GT +, AHPV + (P=0.005, 0.000, 0.000).However, in the group of ＜30 years old, the OR value of HSIL+exposure risk of AHPV16 positive women was 8.50, which showed no significant difference from that of 18/45+ and AHPV-(P=1.000, 0.070).③ In group over 30 years old, the specificity of detecting HSIL+by AHPV was higher than that by HC2-HPV (P＜0.05).There was no significant difference in detection specificity between AHPV and HC2-HPV in women under 30 years old.Conclusions:AHPV and its GT detection are reliable methods for colposcopic screening and risk stratification in women aged over 30 years old with LSIL, more attention should be focused on AHPV16 positive.Better biological markers should be explored for younger women.