中华放射医学与防护杂志最新文献

{"title":"Summary and analysis of national-wide γ-spectrometry assessment for radiological health institutions from 2015 to 2017","authors":"李则书, Li Zeshu, 拓飞, Tuo Fei, 张京, Zhang Jing, 周强, Zhou Qiang, 杨宝路, Yang Baolu, 李文红, L. Wenhong","doi":"10.3760/CMA.J.ISSN.0254-5098.2019.10.014","DOIUrl":"https://doi.org/10.3760/CMA.J.ISSN.0254-5098.2019.10.014","url":null,"abstract":"Objective \u0000To standardize the operation and data processing in radiological health institutions in China, in order to promote the assessment of γ-spectrometry, improve the measurement and analysis capabilities of each laboratory, and accordingly improve accuracy of environment sample measuring. \u0000 \u0000 \u0000Methods \u0000By collecting the values of 232Th, 40K and 137Cs contents in soil samples from 2015 to 2017, the assessment results of γ-spectrometry laboratores were summarized and analyzed. \u0000 \u0000 \u0000Results \u0000The technical institutions from 25 provinces were involved in the assessment until 2017, including disease control and prevention centers, entry-exit inspection and quarantine agencies, research institutes, universities and companies. The number of participants was increased from 40 to 48, and the qualified rate exceeded 90%, and the excellent rate was no less than 11% each year. The percentage of relative deviation less than 10% between the measuring result of 232Th, 40K and 137Cs contents and the reference value was larger than 80% in 2017. The accuracy became better. However, the number of institutions with U and Z score less than 1 was increased from 11 to 25, suggesting that the precision of measuring result has also been greatly improved. \u0000 \u0000 \u0000Conclusions \u0000Radiological health institutions in China have good measurement and analysis capabilities with regard to γ-spectrometry, which can meet the needs of environmental sample measurement and in-food radionuclide risk monitoring in an emergency of nuclear and radiation. But a few institutions′ measuring results were largely different from the reference values, as a consequence, it is important to strengthen their ability of measurement and analysis. \u0000 \u0000 \u0000Key words: \u0000γ-spectrometry; Relative deviation; Accuracy; Precision","PeriodicalId":36403,"journal":{"name":"中华放射医学与防护杂志","volume":"22 1","pages":"790-794"},"PeriodicalIF":0.0,"publicationDate":"2019-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78355010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Survey of paediatric CT practice in Shanghai from four hospitals during 2011-2014","authors":"Hong Xiao, Linfeng Gao, Bin Wang, Aijun Qian, J. Yao, Liangyong Qu, Zhou-Hua Jiang","doi":"10.3760/CMA.J.ISSN.0254-5098.2019.10.012","DOIUrl":"https://doi.org/10.3760/CMA.J.ISSN.0254-5098.2019.10.012","url":null,"abstract":"Objective \u0000To study the the application characteristics of paediatric CT examination by investigating four main children′s hospital of Shanghai. \u0000 \u0000 \u0000Methods \u0000All the CT scan cases of paediatric patients in this work were obtained from the radiology information system (RIS) database in four hospitals between 2011 and 2014. The distribution of using CT scans was analysed according to the age, gender, anatomical regions and the duplicated cases of the patient, then estimated the paediatric CT scan rates of four hospitals in Shanghai. \u0000 \u0000 \u0000Results \u0000Retrospective review of RIS showed 249 350 CT examinations from 175 672 young patients were performed between 2011 and 2014 in the surveyed hospitals. More males (62%) were scanned than females (38%). The majority of children receiving the examinations were 1 to 5 years old, which amounted to 40.3% in all. Cardiac CT accounted for 14.5% among all children of ≤1 year old CTs and accounted for 63.0% among all cardiac CT scans. There were 33 634 (19.1%) individuals who had received 2 or more CT scans during the four years. The estimated paediatric CT scan frequencies of four hospitals in Shanghai from 2011 to 2014 were 37.9 examinations per 1 000 population in 2011, 43.3 examinations per 1 000 population in 2012, 43.3 examinations per 1 000 population in 2013 and 39.0 examinations per 1 000 population in 2014. \u0000 \u0000 \u0000Conclusions \u0000The CT scan frequencies of four hospitals in children and young adults was almost keeping stable in Shanghai. \u0000 \u0000 \u0000Key words: \u0000Paediatric; CT examination; Frequency; Shanghai","PeriodicalId":36403,"journal":{"name":"中华放射医学与防护杂志","volume":"14 1","pages":"778-784"},"PeriodicalIF":0.0,"publicationDate":"2019-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90411408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Construction and application of food radionuclide monitoring information system","authors":"S. Fan, J. Deng, Qiang Zhou, Fei Tuo, Q. Sun","doi":"10.3760/CMA.J.ISSN.0254-5098.2019.10.004","DOIUrl":"https://doi.org/10.3760/CMA.J.ISSN.0254-5098.2019.10.004","url":null,"abstract":"Objective \u0000To establish a nationwide food radionuclides monitoring network to improve the national food radionuclides monitoring efficiency. \u0000 \u0000 \u0000Methods \u0000The system includes a nationwide food radionuclides monitoring information system based on the existing National Radiation Health Information Platform. The system consists mainly of information filling, data review, retrieval query, graphic report and data export. \u0000 \u0000 \u0000Results \u0000Since 2016, a network submission method was used for the first time in the national food radioactive material risk monitoring. The system improved the timeliness and validity of data reporting and provided a more effective means than before for the normative management and scientific application of data. \u0000 \u0000 \u0000Conclusions \u0000The national food radionuclides monitoring network was successfully constructed and in use. The system has provided a good information support for monitoring the food radionuclide levels in China. \u0000 \u0000 \u0000Key words: \u0000Food; Radionuclides; Network reporting; Food safety; Data platform","PeriodicalId":36403,"journal":{"name":"中华放射医学与防护杂志","volume":"39 1","pages":"736-740"},"PeriodicalIF":0.0,"publicationDate":"2019-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84672482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Construction and application of national radiological health information platform","authors":"J. Deng, S. Fan, Shuxia Hao, Tuo Wang, Jinggang An, Xiaohui Liu, Q. Sun","doi":"10.3760/CMA.J.ISSN.0254-5098.2019.10.002","DOIUrl":"https://doi.org/10.3760/CMA.J.ISSN.0254-5098.2019.10.002","url":null,"abstract":"Objective \u0000To construct a national radiological health information platform, in order to collect and analyze radiological health monitoring and survey data, so as to improve data utilization and ensuring technology support to radiological health. \u0000 \u0000 \u0000Methods \u0000In accordance with China′s relevant laws, regulations and regulations, a national radiological health information platform was designed, developed and operated in response to the needs of radiological health monitoring, scientific research and management. \u0000 \u0000 \u0000Results \u0000The system was initially established in 2015, consisting of five business modules: medical radiation protection, personal dose, occupational health, food radioactivity monitoring and occupational radiological disease reporting. In the past 4 years, the system has been running normally and 5 business databases have been established. More than 8 million data of monitoring and survey have been collected. More than 1 400 terminal users have good experiences and frequent interactions. \u0000 \u0000 \u0000Conclusions \u0000The successful construction of the national radiological health information platform not only promotes and standardizes the network direct reporting of radiological health monitoring and investigation business data, but also provides analytical and utilization tools for technical institutions/personnel on radiological health, and gradually becomes an important scientific basis and database for the development of radiological health laws, regulations and standards in China as well as for national health service. \u0000 \u0000 \u0000Key words: \u0000Radiological health; Information platform; Survey","PeriodicalId":36403,"journal":{"name":"中华放射医学与防护杂志","volume":"1 1","pages":"725-730"},"PeriodicalIF":0.0,"publicationDate":"2019-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82624490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Current status and future perspectives of radiological health informatization in China","authors":"J. Deng, Q. Sun","doi":"10.3760/CMA.J.ISSN.0254-5098.2019.10.001","DOIUrl":"https://doi.org/10.3760/CMA.J.ISSN.0254-5098.2019.10.001","url":null,"abstract":"A decade saw the construction of radiological health informatization in China since the application of the national individual dose registration system in 2009. The national radiological health information platform has been established, covering 5 information systems including individual dose, occupational radiological diseases and occupational health, medical radiation protection, food radionuclide monitoring and occupational radiological disease reporting. Up to 2018, more than 8 million pieces of monitoring data have been collected, and more than 1 400 users have been authorized. In this paper, the current situation of radiological health informatization construction in the past 10 years in China was analyzed. The key points and problems about the development of radiological health informatization were discussed and the suggestions were put forward, in order to promote the construction of radiological health informatization, prove occupational radiological prevention and control, and contribute to the construction of \"Healthy China\" . \u0000 \u0000Key words: \u0000Radiological health; Monitoring; Informatization","PeriodicalId":36403,"journal":{"name":"中华放射医学与防护杂志","volume":"31 1","pages":"721-724"},"PeriodicalIF":0.0,"publicationDate":"2019-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81337236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on informatization pattern of medical exposure frequency and dose monitoring","authors":"Qun Zhang, Liang Zhang, Dandan Zhang, Aihong Wang, Bin Chen, Chang-song Hou, Weiguo Zhu, Z. Ying, L. Qu, Guozhang Xu","doi":"10.3760/CMA.J.ISSN.0254-5098.2019.10.007","DOIUrl":"https://doi.org/10.3760/CMA.J.ISSN.0254-5098.2019.10.007","url":null,"abstract":"Objective \u0000To realize the efficient monitoring of frequency of medical exposure and dose monitoring in Ningbo by means of informatization. \u0000 \u0000 \u0000Methods \u0000Data transmission process and the key elements of frequency of medical exposure and individual dose were investigated. According to standardization principles of data elements, the standardized data elements for frequency of medical exposure and individual dose were determined. On this basis, modules and functions of data receiving platform on the frequency of medical exposure and individual dose in Ningbo were designed. \u0000 \u0000 \u0000Results \u0000Totally 59 data elements on frequency of medical exposure and individual dose were formed. According to their functions, the data receiving platform was divided into the distribution of radiodiagnosis and radiotherapy resources, the frequency monitoring of medical exposure and dose monitoring for permanent residents, and the dose monitoring. \u0000 \u0000 \u0000Conclusions \u0000The establishment of frequency and dose information monitoring platform on medical exposure in Ningbo and the determination of standardized data elements will be conducive to further progress in medical exposure information monitoring in Ningbo. \u0000 \u0000 \u0000Key words: \u0000Medical exposure; Informatization; Frequency; Dose","PeriodicalId":36403,"journal":{"name":"中华放射医学与防护杂志","volume":"208 1","pages":"750-755"},"PeriodicalIF":0.0,"publicationDate":"2019-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78495053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Application of upper limbs-raised position in CT examination of airway foreign body in children","authors":"Bian Chuanzhen, Jian Zhang, Ying Wang, Jiewei Liu, Yang Ming","doi":"10.3760/CMA.J.ISSN.0254-5098.2019.10.015","DOIUrl":"https://doi.org/10.3760/CMA.J.ISSN.0254-5098.2019.10.015","url":null,"abstract":"Objective \u0000To confirm the effect of the relative position between upper limbs and cervicothoracic vertebrae on image quality and radiation dose while performing airway CT examination of children with airway foreign bodies. \u0000 \u0000 \u0000Methods \u0000One hundred and three children, aged from 1 to 48 months were enrolled prospectively and divided into 3 groups according to the position of upper limbs.In group A, the upper limbs were raised beside the cervical vertebra, in group B, the upper limbs were placed beside the thoracic vertebra, and in group C, the upper limbs were raised about 45 degrees with sponge pads and placed beside the chest. Data were acquired by Philips 128iCT, and CT dose index (CTDIvol) and dose-length product (DLP) were recorded and compared among three groups. The image qualities were evaluated subjectively and objectively. \u0000 \u0000 \u0000Results \u0000Subjective score of cervical image quality in group B (4.33±0.72) and group C (4.19±0.63) were higher than that in group A (3.71±0.66), and the difference was statistically significant (Z=-3.19、-2.61, P 0.05). \u0000 \u0000 \u0000Conclusions \u0000Raising upper limbs 45 degrees and placing them beside the chest will improve the CT image quality of airway and reduce the radiation dose. \u0000 \u0000 \u0000Key words: \u0000Airway foreign bodies; Upper limbs; Radiation dose","PeriodicalId":36403,"journal":{"name":"中华放射医学与防护杂志","volume":"26 1","pages":"795-800"},"PeriodicalIF":0.0,"publicationDate":"2019-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79107696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Introduction to national occupational radiation disease reporting system","authors":"Xiaoliang Li, Q. Sun, Jian-xiang Liu, J. Deng","doi":"10.3760/CMA.J.ISSN.0254-5098.2019.10.003","DOIUrl":"https://doi.org/10.3760/CMA.J.ISSN.0254-5098.2019.10.003","url":null,"abstract":"Objective To establish the national occupational radiation disease reporting system and learn about the incidence of occupational radiation sickness in radiation workers. Methods In accordance with the relevant regulations, standards and literatures available in China, the system was designed and implemented to survey the requirements of diagnosis institutions of occupational radiation sickness and administrative departments. Results The system was initially established with expectant functions. The system functional modules consisted of case reporting, case information enquiry, statistical analysis and system management. The diagnosis institutions of occupational radiation sickness had used the system to report the cases diagnosed in 2017. Conclusions The system achieved the standardized case reporting for the institutions of occupational radiation sickness, and provided scientific data for the health surveillance of radiation workers and decisions of governments. Key words: Occupational radiation sickness; Occupational health surveillance; Registry system","PeriodicalId":36403,"journal":{"name":"中华放射医学与防护杂志","volume":"84 1","pages":"731-735"},"PeriodicalIF":0.0,"publicationDate":"2019-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75807783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on the conversion between CT hounsfield units and relative stopping power in proton therapy and the improvement in adipose tissue","authors":"Xiangli Cui, K. Jee, Hongzhi Wang, Man Hu, Hsiao-Ming Lu","doi":"10.3760/CMA.J.ISSN.0254-5098.2019.10.011","DOIUrl":"https://doi.org/10.3760/CMA.J.ISSN.0254-5098.2019.10.011","url":null,"abstract":"Objective \u0000To introduce a method for calibrating the conversion from CT Hounsfield units (HU) to relative stopping power (RSP) for proton therapy, and improve the precision of the conversion in the region for adipose tissues. \u0000 \u0000 \u0000Methods \u0000The HU and RSP values of human tissues were calculated by a stoichiometric calibration method. Animal tissue was used to simulate subcutaneous adipose tissue of patients, and the HU and RSP of the animal tissue were measured. The effect of subcutaneous adipose tissue on conversion between HU and RSP were analyzed by piecewise fitting. \u0000 \u0000 \u0000Results \u0000The precision of conversion curve was improved significantly with the measured HU and RSP of adipose tissue in the fitting. The effect caused by different choice in different ionization energy was less than 0.6%, and the effect of proton energy differential was less than 0.8%. \u0000 \u0000 \u0000Conclusions \u0000The precision of conversion curve for the transformation of HU into RSP in adipose tissues could be improved by taking subcutaneous adipose tissue into account, which would reduce the range error of proton beams when such tissues are present in the target volumes or in the beam path. \u0000 \u0000 \u0000Key words: \u0000Proton therapy; Relative stopping power; Stoichiometric calibration method","PeriodicalId":36403,"journal":{"name":"中华放射医学与防护杂志","volume":"81 1","pages":"772-777"},"PeriodicalIF":0.0,"publicationDate":"2019-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87223503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prognostic analysis of radical radiotherapy for 211 cases of cervical cancer","authors":"Yu Xiu, F. Meng, J. Ou, Zhuo Wang, Jing Du, K. Zhao, Yunlong Wang, Zhishen Chen, Q. Tian, Baosheng Sun","doi":"10.3760/CMA.J.ISSN.0254-5098.2019.10.009","DOIUrl":"https://doi.org/10.3760/CMA.J.ISSN.0254-5098.2019.10.009","url":null,"abstract":"Objective \u0000To investigate the curative effect and prognostic factors of radical radiotherapy for cervical cancer. \u0000 \u0000 \u0000Methods \u0000A total of 211 patients with stage ⅠA-ⅢB cervical cancer who underwent therapy in department of radiotherapy, Tumor Hospital of Jilin province between June 2014 and February 2017, were analyzed retrospectively. All patients received radical radiotherapy with or without concurrent chemotherapy. Short-term and long-term efficacy and related prognostic factors were observed. Kaplan-Meier method was used for survival analysis, Log-rank test was used for univariate analysis, and Cox proportional hazards regression model was used for multivariate analysis. \u0000 \u0000 \u0000Results \u0000The 2-year overall survival (OS) and disease free survival (DFS) were 83.4% and 72.5%, respectively. During the follow-up periods, 46 patients (21.8%) died, including two from non-tumor-related diseases, and one from second primary colon cancer. Totally 57 patients (27%) had recurrence and metastasis, including 16 (28.1%) with local recurrence, 27 (47.4%) with distant metastasis, and 14 with local recurrence and distant metastasis(24.6%). Univariate analysis showed that 2-year OS and DFS were significantly correlated with pathological type, pre-treatment squamous cell carcinoma antigen (SCC) value and FIGO stage (OS: χ2=7.123, 6.014, 8.398, P<0.05; DFS: χ2=11.832, 8.003, 7.731, P<0.05). In addition to the above factors, 2-year DFS was also associated with pelvic lymph node metastasis (χ2=9.286, P<0.05). Multivariate analysis showed that pathological type, pre-treatment SCC value and FIGO stage were independent prognostic factors of OS(HR=2.963, 2.473, 2.574, P<0.05). The independent prognosis factors affecting DFS included pathological type, pre-treatment SCC value and pelvic lymph node metastasis (HR =3.014, 1.988, 1.914, P<0.05). \u0000 \u0000 \u0000Conclusions \u0000By means of radical radiotherapy, cervical cancer patients with adenocarcinoma, pre-treatment SCC levels ≥30 ng/ml and advanced stage have poor prognosis, so more active treatment strategy should be adopted. \u0000 \u0000 \u0000Key words: \u0000Cervical cancer; Radical radiotherapy; Efficacy; Prognosis","PeriodicalId":36403,"journal":{"name":"中华放射医学与防护杂志","volume":"17 1","pages":"762-767"},"PeriodicalIF":0.0,"publicationDate":"2019-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85225598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}