Pub Date : 2021-04-01DOI: 10.13491/J.ISSN.1004-714X.2021.02.020
Hu Junjie, Sun Yanqiu, Wang Haiyang, Ren Yanli, Yang Guoren
Objective To investigate the changes of CT cerebral perfusion (CTP) and the application value of nuclear magnetic resonance proton spin labeling (3D-ASL) and to conduct a comparative study. Methods Multi-slice spiral CT(MDCT) was used to study the changes of CTP in 22 patients with HAPC. Comparison of CT whole-brain perfusion technique and nuclear magnetic resonance proton spin labeling technique (3D-ASL) in hemodynamic changes of the brain in plateau polycythemia. Results With the aggravation of HAPC, CBF of cerebral cortex and white matter showed a downward trend. Except the white matter of frontal lobe and temporal lobe, the difference of HAPC among different diseases was statistically significant ( P < 0.05). Along with the aggravation of, each part of the brain cortex and white matter CBV increase, white matter, and each part CBV difference had statistical significance between different condition ( P < 0.05). With the aggravation of the disease, the MTT of cortex and white matter in all parts of the brain increased significantly, and the difference of MTT between different parts of the disease was statistically significant ( P < 0.05). HAPC patients along with the aggravation of different level, rCBF is reduced, in addition to the parietal cortex, temporal and occipital white matter, white matter rCBF differences between different parts of different condition have statistical significance ( P < 0.05). ROC curve was used to evaluate the diagnostic value of CTP and ASL. The two curves were close to each other, and CTP was slightly better than ASL. Conclusion With the progression of HAPC, cerebral blood flow decreased, blood volume increased, and average blood flow time prolonged in patients with different degrees of HAPC. CTP and ASL had similar effects, and the former had slightly better value. 摘要： 目的 研宄高原红细胞增多症(HAPC)CT脑灌注 (CTP) 的变化/核磁共振质子自旋标记技术 (3D-ASL) 的应用 价值并进行对比研宄。 方法 用多层螺旋 CT(MDCT) 研宄 22 例不同程度高原红细胞增多症患者的 CT 脑灌注的变 化; CT 全脑灌注技术与核磁共振质子自旋标记技术 (3D-ASL) 在高原红细胞增多症脑部血流动力学改变中的应用价 值的比较。 结果 HAPC 随病情加重, 大脑皮质和白质均脑血流量 (CBF) 呈下降趋势, 除额叶白质和颞叶白质外, 余部 位不同病情间差异均有统计学意义 ( P < 0.05); 随病情加重, 大脑各部位皮质和白质脑血容量 (CBV) 增加, 白质更为显 著, 且各部位不同病情间 CBV 差异均有统计学意义 ( P < 0.05); 随病情加重, 大脑各部位皮质和白质平均通过时间 (MTT) 均显著增加, 各部位不同病情间 MTT 差异均有统计学意义 ( P < 0.05); 不同程度 HAPC 患者随病情加重 ( P <0.05), 相对脑血流量(rCBF)降低, 除顶叶皮质、颞叶白质和枕叶白质外, 各部位不同病情间rCBF差异均有统计学意 义;通过 ROC 曲线来评价 CTP 和ASL两者的诊断价值, 两条曲线接近, CTP 略优于 ASL。 结论 不同程度HAPC患 者随着病情进展, 脑血流减低;血容量增加;血流平均通过时间延长; CTP 与 ASL 两种方法效果接近, 前者价值略优。
Objective To invest the changes of CT membrane fusion (CTP) and the application value of nuclear magnetic response proton spin labeling (3D-ASL) and to conduct a comparative study Methods Multi slice spiral CT (MDCT) was used to study the changes of CTP in 22 patients with HAPC Comparison of CT whole brain fusion technology and nuclear magnetic response proton spin labeling technology (3D-ASL) in multimodal changes of the brain in plateau polythemia Results With the aggregation of HAPC, CBF of cerebra core and white matter shown a downward trend Except for the white matter of front and temporary lobes, the difference of HAPC among different diseases was statistically significant (P<0.05). Along with the escalation of, each part of the brain core and white matter CBV increase, white matter, and each part CBV difference had statistical significance between different conditions (P<0.05). With the escalation of the disease, The MTT of core and white matter in all parts of the brain increased significantly, and the difference of MTT between different parts of the disease was statistically significant (P<0.05). HAPC patients along with the aggregation of different levels, rCBF is reduced, in addition to the partial core, temporary and local white matter, White matter rCBF differences between different parts of different conditions have statistical significance (P<0.05). ROC curve was used to evaluate the diagnostic value of CTP and ASL The two curves were closed to each other, and CTP was slightly better than ASL Conclusion With the progression of HAPC, cerebral blood flow decreased, blood volume increased, and average blood flow time extended in patients with different degrees of HAPC CTP and ASL had similar effects, and the former had slightly better value Abstract: Objective: To study the changes in CT cerebral perfusion (CTP) of high altitude polycythemia (HAPC) and the application value of proton spin labeling (3D-ASL) in magnetic resonance imaging. Method: Multi slice spiral CT (MDCT) was used to study the changes in CT cerebral perfusion in 22 patients with different degrees of high altitude polycythemia; Comparison of the application value of CT whole brain perfusion technology and nuclear magnetic resonance proton spin labeling (3D-ASL) technology in cerebral hemodynamic changes in high altitude polycythemia. As the condition of HAPC worsened, the average cerebral blood flow (CBF) in the cerebral cortex and white matter showed a decreasing trend. Except for the white matter in the frontal and temporal lobes, there were statistically significant differences among different parts of the condition (P<0.05); As the condition worsens, the cerebral blood volume (CBV) of the cortex and white matter in various parts of the brain increases, with the white matter becoming more significant, and there is a statistically significant difference in CBV between different parts of the disease (P<0.05); As the condition worsens, the average transit time (MTT) o
{"title":"Study on hemodynamics of high altitude polycythemia by 3D-ASL combined with CT cerebral perfusion","authors":"Hu Junjie, Sun Yanqiu, Wang Haiyang, Ren Yanli, Yang Guoren","doi":"10.13491/J.ISSN.1004-714X.2021.02.020","DOIUrl":"https://doi.org/10.13491/J.ISSN.1004-714X.2021.02.020","url":null,"abstract":"Objective To investigate the changes of CT cerebral perfusion (CTP) and the application value\u0000 of nuclear magnetic resonance proton spin labeling (3D-ASL) and to conduct a comparative\u0000 study.\u0000 Methods Multi-slice spiral CT(MDCT) was used to study the changes of CTP in 22 patients with\u0000 HAPC. Comparison of CT whole-brain perfusion technique and nuclear magnetic resonance\u0000 proton spin labeling technique (3D-ASL) in hemodynamic changes of the brain in plateau\u0000 polycythemia.\u0000 Results With the aggravation of HAPC, CBF of cerebral cortex and white matter showed a downward\u0000 trend. Except the white matter of frontal lobe and temporal lobe, the difference of\u0000 HAPC among different diseases was statistically significant (\u0000 P < 0.05). Along with the aggravation of, each part of the brain cortex and white matter\u0000 CBV increase, white matter, and each part CBV difference had statistical significance\u0000 between different condition (\u0000 P < 0.05). With the aggravation of the disease, the MTT of cortex and white matter\u0000 in all parts of the brain increased significantly, and the difference of MTT between\u0000 different parts of the disease was statistically significant (\u0000 P < 0.05). HAPC patients along with the aggravation of different level, rCBF is reduced,\u0000 in addition to the parietal cortex, temporal and occipital white matter, white matter\u0000 rCBF differences between different parts of different condition have statistical significance\u0000 (\u0000 P < 0.05). ROC curve was used to evaluate the diagnostic value of CTP and ASL. The\u0000 two curves were close to each other, and CTP was slightly better than ASL.\u0000 Conclusion With the progression of HAPC, cerebral blood flow decreased, blood volume increased,\u0000 and average blood flow time prolonged in patients with different degrees of HAPC.\u0000 CTP and ASL had similar effects, and the former had slightly better value.\u0000 摘要： 目的 研宄高原红细胞增多症(HAPC)CT脑灌注 (CTP) 的变化/核磁共振质子自旋标记技术 (3D-ASL) 的应用 价值并进行对比研宄。\u0000 方法 用多层螺旋 CT(MDCT) 研宄 22 例不同程度高原红细胞增多症患者的 CT 脑灌注的变 化; CT 全脑灌注技术与核磁共振质子自旋标记技术 (3D-ASL)\u0000 在高原红细胞增多症脑部血流动力学改变中的应用价 值的比较。\u0000 结果 HAPC 随病情加重, 大脑皮质和白质均脑血流量 (CBF) 呈下降趋势, 除额叶白质和颞叶白质外, 余部 位不同病情间差异均有统计学意义 (\u0000 P < 0.05); 随病情加重, 大脑各部位皮质和白质脑血容量 (CBV) 增加, 白质更为显 著, 且各部位不同病情间 CBV 差异均有统计学意义 (\u0000 P < 0.05); 随病情加重, 大脑各部位皮质和白质平均通过时间 (MTT) 均显著增加, 各部位不同病情间 MTT 差异均有统计学意义 (\u0000 P < 0.05); 不同程度 HAPC 患者随病情加重 (\u0000 P <0.05), 相对脑血流量(rCBF)降低, 除顶叶皮质、颞叶白质和枕叶白质外, 各部位不同病情间rCBF差异均有统计学意 义;通过 ROC 曲线来评价 CTP\u0000 和ASL两者的诊断价值, 两条曲线接近, CTP 略优于 ASL。\u0000 结论 不同程度HAPC患 者随着病情进展, 脑血流减低;血容量增加;血流平均通过时间延长; CTP 与 ASL 两种方法效果接近, 前者价值略优。","PeriodicalId":58844,"journal":{"name":"中国辐射卫生","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46146205","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}
Pub Date : 2021-04-01DOI: 10.13491/J.ISSN.1004-714X.2021.02.021
Zheng Bo, Zhang Xin-yi
Objective To explore the clinical curative effect of interventional treatment of fibroids, evaluate its clinical application effect and provide a reference for future clinical treatment. Methods This study retrospectively analyzed the clinical data of 29 fibroid cases who admitted in our hospital from March 2016 to March 2019. All patients were performed X-ray guided uterine artery embolization (UAE). The study observed and recorded the volume of uterine and fibroid, menstruation, hormone levels, the post-operative complications etc. before and after the treatment. Results Patients were reexamined once every three months after the treatment, three times in a row. It was found that the patients’ postoperative uterine volume and fibroid volume were significantly smaller than preoperative volume ( P < 0.05), and the difference was statistically significant. The postoperative menstrual cycle, menstruation, menstruation time were significantly improved ( P < 0.05), and the difference was statistically significant. The postoperative LH, E2, FSH levels had no significant change ( P > 0.05), and the difference was not statistically significant. There were two abdominal pain cases, one hematoma case and one vomite case during the postoperative observation period. These symptoms disappeared after the symptomatic treatment, and no serious symptoms such as high fever and pelvic infection occurred. Conclusion Interventional therapy of fibroids can effectively reduce the size of fibroids, significantly improve the quality of life of patients, with small damage, rapid recovery, preservation of the uterus and other advantages, which is worthy of further clinical application and promotion. 摘要： 目的 探讨介入治疗子宫肌瘤的临床疗效, 评价其临床应用效果, 为今后临床治疗提供参考和借鉴。 方法 回 顾性分析我院 2016 年 3 月一2019 年 3 月收治的 29 例子宫肌瘤患者的临床资料, 所有患者均行X射线引导下子宫动 脉栓塞术 (UAE), 观察并记录患者治疗前后子宫及肌瘤体积、月经、激素水平、治疗后并发症等情况。 结果 治疗后每 间隔 3 个月复查 1 次, 连续复查 3 次, 显示患者治疗后子宫体积、子宫肌瘤体积均较治疗前缩小, 差异具有统计学意义 ( P < 0.05); 治疗后月经周期、月经量、经期时间均较治疗前改善, 差异具有统计学意义 ( P < 0.05); 治疗后 LH、E2、 FSH 指标均较治疗前变化不明显, 差异无统计学意义 ( P > 0.05); 术后留观期间出现下腹疼痛 2 例, 穿刺处血肿、恶心 呕吐各 1 例, 对症处理后, 上述并发症消除, 未出现高热、感染等严重病症。消除, 未出现高热、感染等严重病症。消 除, 未出现高热、感染等严重病症。 结论 子宫肌瘤的介入治疗能有效缩小肌瘤体积, 明显改善病人生活质量, 具有损 伤小、恢复快、保全子宫等优势, 值得临床进一步推广应用。
Objective To explore the clinical cumulative effect of interventional treatment of fibers, evaluate its clinical application effect and provide a reference for future clinical treatment Methods This study retrospectively analyzed the clinical data of 29 fiber cases who admitted in our hospital from March 2016 to March 2019 All patients were performed X-ray guided computerization (UAE) The study observed and recorded the volume of computerine and fiber, menstruation, homone levels, the post operational applications, etc. before and after the treatment Results Patients were reexamined once every three months after the treatment, three times in a row It was found that the patients' postoperative computerine volume and fiber volume were significantly smaller than preoperative volume (P<0.05), and the difference was statistically significant The postmenopausal cycle, menstruation, menstruation time were significantly improved (P<0.05), and the difference was statistically significant The postoperatively LH, E2, FSH levels have no significant change (P>0.05), and the difference was not statistically significant There were two arbitrary paint cases, one Hematoma case and one vomit case during the postoperative observation period These symptoms appeared after the symptomatic treatment, and no serious symptoms such as high fever and pelvic infection occurred Conclusion Interventional therapy of fibers can effectively reduce the size of fibers, significantly improve the quality of life of patients, with small damage, rapid recovery, preservation of the uterus and other advantages, which is worth of further clinical application and promotion Abstract: Objective: To explore the clinical efficacy of interventional therapy for uterine fibroids, evaluate its clinical application effect, and provide reference and reference for future clinical treatment. Method: A retrospective analysis was conducted on the clinical data of 29 patients with uterine fibroids admitted to our hospital from March 2016 to March 2019. All patients underwent X-ray guided uterine artery embolization (UAE), and the volume of the uterus and fibroids, menstrual period, hormone levels, and postoperative complications before and after treatment were observed and recorded. The results showed that after treatment, the volume of the uterus and uterine fibroids in the patient decreased significantly (P<0.05), with a follow-up every 3 months and a continuous follow-up of 3 times; After treatment, the menstrual cycle, menstrual volume, and menstrual duration improved significantly compared to before treatment (P<0.05); After treatment, there was no significant change in LH, E2, and FSH indicators compared to before treatment, and the difference was not statistically significant (P>0.05); During the postoperative observation period, there were 2 cases of lower abdominal pain, 1 case of hematoma at the puncture site, and 1 case of nausea and vomiting. After symptomatic treatment, the above complicati
{"title":"The clinical curative effect analysis of interventional therapy for fibroid","authors":"Zheng Bo, Zhang Xin-yi","doi":"10.13491/J.ISSN.1004-714X.2021.02.021","DOIUrl":"https://doi.org/10.13491/J.ISSN.1004-714X.2021.02.021","url":null,"abstract":"Objective To explore the clinical curative effect of interventional treatment of fibroids,\u0000 evaluate its clinical application effect and provide a reference for future clinical\u0000 treatment.\u0000 Methods This study retrospectively analyzed the clinical data of 29 fibroid cases who admitted\u0000 in our hospital from March 2016 to March 2019. All patients were performed X-ray guided\u0000 uterine artery embolization (UAE). The study observed and recorded the volume of uterine\u0000 and fibroid, menstruation, hormone levels, the post-operative complications etc. before\u0000 and after the treatment.\u0000 Results Patients were reexamined once every three months after the treatment, three times\u0000 in a row. It was found that the patients’ postoperative uterine volume and fibroid\u0000 volume were significantly smaller than preoperative volume (\u0000 P < 0.05), and the difference was statistically significant. The postoperative menstrual\u0000 cycle, menstruation, menstruation time were significantly improved (\u0000 P < 0.05), and the difference was statistically significant. The postoperative LH,\u0000 E2, FSH levels had no significant change (\u0000 P > 0.05), and the difference was not statistically significant. There were two abdominal\u0000 pain cases, one hematoma case and one vomite case during the postoperative observation\u0000 period. These symptoms disappeared after the symptomatic treatment, and no serious\u0000 symptoms such as high fever and pelvic infection occurred.\u0000 Conclusion Interventional therapy of fibroids can effectively reduce the size of fibroids, significantly\u0000 improve the quality of life of patients, with small damage, rapid recovery, preservation\u0000 of the uterus and other advantages, which is worthy of further clinical application\u0000 and promotion.\u0000 摘要： 目的 探讨介入治疗子宫肌瘤的临床疗效, 评价其临床应用效果, 为今后临床治疗提供参考和借鉴。\u0000 方法 回 顾性分析我院 2016 年 3 月一2019 年 3 月收治的 29 例子宫肌瘤患者的临床资料, 所有患者均行X射线引导下子宫动 脉栓塞术 (UAE), 观察并记录患者治疗前后子宫及肌瘤体积、月经、激素水平、治疗后并发症等情况。\u0000 结果 治疗后每 间隔 3 个月复查 1 次, 连续复查 3 次, 显示患者治疗后子宫体积、子宫肌瘤体积均较治疗前缩小, 差异具有统计学意义 (\u0000 P < 0.05); 治疗后月经周期、月经量、经期时间均较治疗前改善, 差异具有统计学意义 (\u0000 P < 0.05); 治疗后 LH、E2、 FSH 指标均较治疗前变化不明显, 差异无统计学意义 (\u0000 P > 0.05); 术后留观期间出现下腹疼痛 2 例, 穿刺处血肿、恶心 呕吐各 1 例, 对症处理后, 上述并发症消除, 未出现高热、感染等严重病症。消除, 未出现高热、感染等严重病症。消\u0000 除, 未出现高热、感染等严重病症。\u0000 结论 子宫肌瘤的介入治疗能有效缩小肌瘤体积, 明显改善病人生活质量, 具有损 伤小、恢复快、保全子宫等优势, 值得临床进一步推广应用。","PeriodicalId":58844,"journal":{"name":"中国辐射卫生","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42551378","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}
Pub Date : 2021-04-01DOI: 10.13491/J.ISSN.1004-714X.2021.02.016
Xu Mingfa, NI Huaixin, Xiang Huiyun, HE Yena, Zheng Huangting, Zhang Wei, Lin Y. Chen
The investigation of environmental radioactivity level is an important basic work of ecological environment protection. It can provide basic data and scientific basis for the evaluation of radioactive environment quality and the formulation of radiation safety regulations and standards. Based on many years of practical experience of environmental radioactivity level investigation, combined with relevant regulations and standards, this paper summarizes the common investigation methods in the investigation and research of environmental radioactivity level at home and abroad, summarizes a set of environmental radioactivity level investigation scheme with strong applicability, and gives detailed suggestions on the ideas, methods, technical routes and other key points of the investigation scheme. The research results of this paper can provide a reference for the preparation of environmental radioactive level investigation scheme. 摘要： 环境放射性水平调查是生态环境保护的一项重要基础工作, 它能为评价放射性环境质量、制定辐射安全法规和 标准等提供基础资料和科学依据。本文以多年的环境放射性水平调查实践经验为基础, 结合相关的法规标准, 总结了 国内外环境放射性水平调查研宄中常用的调查方法, 归纳出一套适用性较强的环境放射性水平调查方案, 对调查方案 编制的思路与方法、技术路线等要点给出了详细建议。本研宄成果可以为环境放射性水平调查方案的编制提供参考。
{"title":"Research and suggestion on the plan of environmental radioactivity level investigation","authors":"Xu Mingfa, NI Huaixin, Xiang Huiyun, HE Yena, Zheng Huangting, Zhang Wei, Lin Y. Chen","doi":"10.13491/J.ISSN.1004-714X.2021.02.016","DOIUrl":"https://doi.org/10.13491/J.ISSN.1004-714X.2021.02.016","url":null,"abstract":"The investigation of environmental radioactivity level is an important basic work\u0000 of ecological environment protection. It can provide basic data and scientific basis\u0000 for the evaluation of radioactive environment quality and the formulation of radiation\u0000 safety regulations and standards. Based on many years of practical experience of environmental\u0000 radioactivity level investigation, combined with relevant regulations and standards,\u0000 this paper summarizes the common investigation methods in the investigation and research\u0000 of environmental radioactivity level at home and abroad, summarizes a set of environmental\u0000 radioactivity level investigation scheme with strong applicability, and gives detailed\u0000 suggestions on the ideas, methods, technical routes and other key points of the investigation\u0000 scheme. The research results of this paper can provide a reference for the preparation\u0000 of environmental radioactive level investigation scheme.\u0000 摘要： 环境放射性水平调查是生态环境保护的一项重要基础工作, 它能为评价放射性环境质量、制定辐射安全法规和 标准等提供基础资料和科学依据。本文以多年的环境放射性水平调查实践经验为基础,\u0000 结合相关的法规标准, 总结了 国内外环境放射性水平调查研宄中常用的调查方法, 归纳出一套适用性较强的环境放射性水平调查方案, 对调查方案 编制的思路与方法、技术路线等要点给出了详细建议。本研宄成果可以为环境放射性水平调查方案的编制提供参考。","PeriodicalId":58844,"journal":{"name":"中国辐射卫生","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44892188","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}
Pub Date : 2021-04-01DOI: 10.13491/J.ISSN.1004-714X.2021.02.014
W. Xiaofang, Miao Quan, Zhao Haijun, LI Shaoyin, Li Ning
More than 90% of artificial irradiation comes from medical irradiation. New radiation technologies are constantly emerging in the medical field, bringing benefits to patients. At the same time, the harm of medical irradiation has attracted more and more attention. There are many problems in the supervision and management of radiation health in medical institutions, such as many standards and specifications involved in radiation health in medical institutions, uneven professional ability of personnel in primary health supervision institutions, inadequate implementation of the main responsibility for the safety of radiation diagnosis and treatment in medical and health institutions, and non-standard service of radiation health technical service institutions, etc. In view of the above problems, the implementation plan of standardization of radiation health supervision, radiation diagnosis and treatment behavior, and radiation technical service behavior has been set. After the pilot operation, the effect is obvious. 摘要： 人工照射 90% 以上来自于医疗照射, 辐射新型技术在医学领域不断出现, 给患者带来福音的同时, 医疗照射带 来危害越来越引起关注。由于医疗机构放射卫生涉及标准规范多、基层卫生监督机构人员业务能力参差不齐、医疗卫 生机构放射诊疗安全的主体责任落实不到位, 放射卫生技术服务机构服务不规范, 影响了医疗机构放射卫生监督管理 效果。针对上述存在的问题, 设定了放射卫生监督规范化, 放射诊疗行为规范化、放射技术服务行为规范化实施方案, 经过试点运行, 实效明显。
{"title":"Practice and experience of standardized management of radiation hygiene in medical institutions","authors":"W. Xiaofang, Miao Quan, Zhao Haijun, LI Shaoyin, Li Ning","doi":"10.13491/J.ISSN.1004-714X.2021.02.014","DOIUrl":"https://doi.org/10.13491/J.ISSN.1004-714X.2021.02.014","url":null,"abstract":"More than 90% of artificial irradiation comes from medical irradiation. New radiation\u0000 technologies are constantly emerging in the medical field, bringing benefits to patients.\u0000 At the same time, the harm of medical irradiation has attracted more and more attention.\u0000 There are many problems in the supervision and management of radiation health in medical\u0000 institutions, such as many standards and specifications involved in radiation health\u0000 in medical institutions, uneven professional ability of personnel in primary health\u0000 supervision institutions, inadequate implementation of the main responsibility for\u0000 the safety of radiation diagnosis and treatment in medical and health institutions,\u0000 and non-standard service of radiation health technical service institutions, etc.\u0000 In view of the above problems, the implementation plan of standardization of radiation\u0000 health supervision, radiation diagnosis and treatment behavior, and radiation technical\u0000 service behavior has been set. After the pilot operation, the effect is obvious.\u0000 摘要： 人工照射 90% 以上来自于医疗照射, 辐射新型技术在医学领域不断出现, 给患者带来福音的同时, 医疗照射带 来危害越来越引起关注。由于医疗机构放射卫生涉及标准规范多、基层卫生监督机构人员业务能力参差不齐、医疗卫\u0000 生机构放射诊疗安全的主体责任落实不到位, 放射卫生技术服务机构服务不规范, 影响了医疗机构放射卫生监督管理 效果。针对上述存在的问题, 设定了放射卫生监督规范化,\u0000 放射诊疗行为规范化、放射技术服务行为规范化实施方案, 经过试点运行, 实效明显。","PeriodicalId":58844,"journal":{"name":"中国辐射卫生","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43847475","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}
Pub Date : 2021-04-01DOI: 10.13491/J.ISSN.1004-714X.2021.02.006
Z. Yanling, Luo Zhiping, Bi YuanJie, Guo Jinsen, Wang Huan
Objective To investigate the effects of particle size, wind speed and dumping velocity on aerosol concentration distribution during powder dumping in a reprocessing plant. Methods CeO 2 powder was selected as the substitute material of PuO 2. FLUENT software was used to calculate the pouring process of CeO 2 powder under different operation conditions. Then the aerosol concentration distribution under different dumping speeds was measured by particle size spectrometer to verify the accuracy of simulation results. Results The particles with small particle size are more likely to be separated from the mainstream area by the drag force of the surrounding gas, and the radius of the diffusion range also increases with the decrease of the particle size. 2) When the ventilation speed is less than 1 m/s, the dust lifting can be reduced and the concentration of dust particles in the chamber can be reduced to a certain extent. 3) In the process of powder dumping, the spoon is rotated anticlockwise at a speed of 100° in 2~3 s, and less dust aerosol is produced on the right side of the tray. Conclusion When operating the powder particles with smaller particle size, more attention should be paid to the monitoring of aerosol at different positions; the change of air inlet velocity makes the flow field in glove box more complex, and the volume fraction of dust particles is related to the size and location of vortex formed by airflow. The greater the wind speed, the greater the impact on the powder dumping process. The experimental results are basically consistent with the simulation results, and the results show that the lower the dumping speed, the smaller the aerosol concentration near the tray. 摘要： 目的 考察粒径、风速和倾倒速度对后处理厂粉末倾倒过程产生的气溶胶浓度分布的影响。 方法 选择 CeO 2 粉末作为 PuO 2 替代材料, 用 FLUENT 软件对不同操作条件下 CeO 2 粉末倾倒过程进行数值计算, 再利用粒径谱 仪对不同倾倒速度下的气溶胶浓度分布进行测量, 验证模拟结果准确性。 结果 小粒径的颗粒更可能受周围气体的 曳力影响而从主流区域脱离出来形成散射粉尘, 其扩散范围的半径也随着粒径的减小而扩大。通风速度在 1 m/s 以下可以减少操作过程粉尘的扬起, 在一定程度上降低箱室内粉尘颗粒的浓度。粉末倾倒过程, 以 2~3 s 将勺子逆时 针旋转 100° 的速度倾倒粉末在托盘右侧产生的粉尘气溶胶较少。 结论 在对粒径较小的粉末颗粒进行操作时, 不同 位置气溶胶的监测应该引起更多的关注;进风速度的变化使得手套箱内的流场变得复杂, 粉尘颗粒的体积分数与气流 形成涡流的大小和涡流位置有关, 风速越大, 对粉末倾倒过程的影响越大;实验结果与模拟结果基本相符, 较慢的倾倒 速度在托盘附近处产生的气溶胶颗粒较少。
Objective To invest the effects of particle size, wind speed and dumping velocity on aerosol concentration distribution during powder dumping in a reprocessing plant Methods CeO 2 powder was selected as the substitute material of PuO 2 FLUENT software was used to calculate the pooling process of CeO 2 powder under different operation conditions Then the aerosol concentration distribution under different dumping speeds was measured by particle size spectrometer to verify the accuracy of simulation results Results The particles with small particle size are more like to be separated from the main stream area by the drag force of the surrounding gas, and the radius of the diffusion range also increases with the decrease of the particle size 2) When the exploitation speed is less than 1 m/s, the cost lifting can be reduced and the concentration of cost particles in the chamber can be reduced to a certain extent 3) In the process of powder dumping, the spoon is rotated anticlockwise at a speed of 100 ° in 2-3 seconds, and less due aerosol is produced on the right side of the track Conclusion When operating the powder particles with smaller particle size, more attention should be paid to the monitoring of aerosol at different positions; The change of air inlet velocity makes the flow field in glove box more complex, and the volume fraction of cost particles is related to the size and location of vortex formed by airflow The greater the wind speed, the greater the impact on the powder dumping process The experimental results are basically consistent with the simulation results, and the results show that lower the dumping speed, the smaller the aerosol concentration near the track Abstract: Objective: To investigate the effects of particle size, wind speed, and dumping speed on the concentration distribution of aerosols generated during the powder dumping process in a post-treatment plant. The method selects CeO2 powder as a substitute material for PuO2, and uses FLUENT software to numerically calculate the dumping process of CeO2 powder under different operating conditions. Then, a particle size spectrometer is used to measure the aerosol concentration distribution at different dumping speeds to verify the accuracy of the simulation results. As a result, small particles are more likely to detach from the mainstream region and form scattered dust due to the drag force of the surrounding gas, and the radius of their diffusion range also expands with the decrease of particle size. Ventilation speed below 1 m/s can reduce the raising of dust during operation and to some extent reduce the concentration of dust particles inside the box. During the powder pouring process, rotate the spoon counterclockwise at a speed of 100 ° for 2-3 seconds to pour the powder, resulting in less dust aerosols on the right side of the tray. Conclusion: When operating on smaller powder particles, monitoring of aerosols at different locations should attract more attention; The chan
{"title":"Study on the distribution characteristics of aerosol produced by powder dumping in glove box","authors":"Z. Yanling, Luo Zhiping, Bi YuanJie, Guo Jinsen, Wang Huan","doi":"10.13491/J.ISSN.1004-714X.2021.02.006","DOIUrl":"https://doi.org/10.13491/J.ISSN.1004-714X.2021.02.006","url":null,"abstract":"Objective To investigate the effects of particle size, wind speed and dumping velocity on aerosol\u0000 concentration distribution during powder dumping in a reprocessing plant.\u0000 Methods CeO\u0000 2 powder was selected as the substitute material of PuO\u0000 2. FLUENT software was used to calculate the pouring process of CeO\u0000 2 powder under different operation conditions. Then the aerosol concentration distribution\u0000 under different dumping speeds was measured by particle size spectrometer to verify\u0000 the accuracy of simulation results.\u0000 Results The particles with small particle size are more likely to be separated from the mainstream\u0000 area by the drag force of the surrounding gas, and the radius of the diffusion range\u0000 also increases with the decrease of the particle size. 2) When the ventilation speed\u0000 is less than 1 m/s, the dust lifting can be reduced and the concentration of dust\u0000 particles in the chamber can be reduced to a certain extent. 3) In the process of\u0000 powder dumping, the spoon is rotated anticlockwise at a speed of 100° in 2~3 s, and\u0000 less dust aerosol is produced on the right side of the tray.\u0000 Conclusion When operating the powder particles with smaller particle size, more attention should\u0000 be paid to the monitoring of aerosol at different positions; the change of air inlet\u0000 velocity makes the flow field in glove box more complex, and the volume fraction of\u0000 dust particles is related to the size and location of vortex formed by airflow. The\u0000 greater the wind speed, the greater the impact on the powder dumping process. The\u0000 experimental results are basically consistent with the simulation results, and the\u0000 results show that the lower the dumping speed, the smaller the aerosol concentration\u0000 near the tray.\u0000 摘要： 目的 考察粒径、风速和倾倒速度对后处理厂粉末倾倒过程产生的气溶胶浓度分布的影响。\u0000 方法 选择 CeO\u0000 2 粉末作为 PuO\u0000 2 替代材料, 用 FLUENT 软件对不同操作条件下 CeO\u0000 2 粉末倾倒过程进行数值计算, 再利用粒径谱 仪对不同倾倒速度下的气溶胶浓度分布进行测量, 验证模拟结果准确性。\u0000 结果 小粒径的颗粒更可能受周围气体的 曳力影响而从主流区域脱离出来形成散射粉尘, 其扩散范围的半径也随着粒径的减小而扩大。通风速度在 1 m/s 以下可以减少操作过程粉尘的扬起,\u0000 在一定程度上降低箱室内粉尘颗粒的浓度。粉末倾倒过程, 以 2~3 s 将勺子逆时 针旋转 100° 的速度倾倒粉末在托盘右侧产生的粉尘气溶胶较少。\u0000 结论 在对粒径较小的粉末颗粒进行操作时, 不同 位置气溶胶的监测应该引起更多的关注;进风速度的变化使得手套箱内的流场变得复杂, 粉尘颗粒的体积分数与气流 形成涡流的大小和涡流位置有关,\u0000 风速越大, 对粉末倾倒过程的影响越大;实验结果与模拟结果基本相符, 较慢的倾倒 速度在托盘附近处产生的气溶胶颗粒较少。","PeriodicalId":58844,"journal":{"name":"中国辐射卫生","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44222711","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}
Pub Date : 2021-04-01DOI: 10.13491/J.ISSN.1004-714X.2021.02.018
Deng Xiaoqin, Liang Chunyang, Yang Yongqin, Chen Li, Wang Yangyang
This review summarizes the basic situation and characteristics of nuclear technology utilization and radiation safety supervision in Sichuan Province, analyzed the main problems of radiation safety supervision, put forward the corresponding countermeasures and suggestions, and provided reference for improving the radiation safety supervision ability of the whole province. 摘要： 本文概述了四川省核技术利用及辐射安全监管的基本情况和特点, 对全省辐射安全监管中存在的能力不足、手 段单一及辐射安全主体责任落实不够等主要问题进行了分析, 并提出了针对性的对策建议, 为进一步提升全省辐射安 全监管能力提供参考。
This review summarizes the basic situation and characteristics of nuclear technology utilization and radiation safety supervision in Sichuan Province, analyzed the main problems of radiation safety supervision, put forward the corresponding counter measures and suggestions, and provided reference for improving the radiation safety supervision ability of the whole province Abstract: This article provides an overview of the basic situation and characteristics of nuclear technology utilization and radiation safety supervision in Sichuan Province. It analyzes the main problems existing in the province's radiation safety supervision, such as insufficient capacity, single means, and insufficient implementation of radiation safety main responsibilities. Targeted countermeasures and suggestions are proposed to provide reference for further improving the province's radiation safety supervision capacity.
{"title":"Study on radiation safety supervision countermeasures of nuclear technology utilization in Sichuan province","authors":"Deng Xiaoqin, Liang Chunyang, Yang Yongqin, Chen Li, Wang Yangyang","doi":"10.13491/J.ISSN.1004-714X.2021.02.018","DOIUrl":"https://doi.org/10.13491/J.ISSN.1004-714X.2021.02.018","url":null,"abstract":"This review summarizes the basic situation and characteristics of nuclear technology\u0000 utilization and radiation safety supervision in Sichuan Province, analyzed the main\u0000 problems of radiation safety supervision, put forward the corresponding countermeasures\u0000 and suggestions, and provided reference for improving the radiation safety supervision\u0000 ability of the whole province.\u0000 摘要： 本文概述了四川省核技术利用及辐射安全监管的基本情况和特点, 对全省辐射安全监管中存在的能力不足、手 段单一及辐射安全主体责任落实不够等主要问题进行了分析, 并提出了针对性的对策建议,\u0000 为进一步提升全省辐射安 全监管能力提供参考。","PeriodicalId":58844,"journal":{"name":"中国辐射卫生","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46691827","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}
Pub Date : 2021-04-01DOI: 10.13491/J.ISSN.1004-714X.2021.02.007
Cao Qinjian, Xia Sanqiang, He Meng, Llu Liye, X. Yunshi, Li Xiaodun, Jiao Yan
Objective Based on the lanthanum bromide scintillator detector, the calculation method of G( E) function was developed to measure the air absorbed dose rate. Methods Firstly, the gamma energy spectrumof the lanthanum bromide detector were simulated and the response functions with different energies were determined with Monte Carlo simulation method. Then, the G( E) function was calculated by the least square method. Finally, the air absorbed dose rate measured by the lanthanum bromide detector using G( E) function conversion method was compared with the theoretical calculation value based on the point source experiments. Results The experimental verification results showed that the relative deviation between thecalculated value with G( E) function and the theoretical calculation value wasmostly controlled within ± 6%, which verified the accuracy of G( E) function. Conclusion The results showed that the method of G( E) function could be applied to calculate the gamma radiation dose rate based on the in-situ the gamma spectrum with LaBr 3 detector. 摘要： 目的 针对溴化镧闪烁体探测器, 开展了 G( E) 函数的计算方法研宄, 最终实现了空气吸收剂量率的测量。 方法 首先, 基于蒙特卡罗模拟计算方法, 模拟计算出溴化镧探测器的 γ 能谱, 给出不同能量的响应函数;然后, 利用 最小二乘法计算得到了 G( E) 函数;最后, 利用标准点源实验, 将溴化镧探测器利用 G( E) 函数转换测量得到的空气吸 收剂量率与理论计算值进行了比较。 结果 实验验证结果表明, 基于 G( E) 函数得到的空气吸收剂量率与理论计算值 的相对偏差控制在 ± 6% 以内, 验证了 G( E) 函数的准确性。 结论 基于 γ 谱-剂量转换方法, 就地 γ 谱仪可应用于辐射 剂量的测量。
Objective Based on the lanthanum bromide scintillator detector, the calculation method of G (E) function was developed to measure the air absorbed dose rate Methods First, the gamma energy spectrum of the lanthanum bromide detector was simulated and the response functions with different energies were determined with Monte Carlo simulation method Then, the G (E) function was calculated by the least square method Finally, the air borne do rate measured by the lanthanum bromide detector using G (E) function conversion method was compared with the theoretical calculation value based on the point source experiments Results The experimental verification results were shown that the relative deviation between the calculated value with G (E) function and the theoretical calculation value was controlled within ± 6%, which verified the accuracy of G (E) function Conclusion The results showed that the method of G (E) function could be applied to calculate the gamma radiation dose rate based on the in situ gamma spectrum with LaBr 3 detector Abstract: A study was conducted on the calculation method of G (E) function for lanthanum bromide scintillator detectors, ultimately achieving the measurement of air absorbed dose rate. Firstly, based on the Monte Carlo simulation calculation method, the performance of the lanthanum bromide detector is simulated and calculated γ Energy spectrum, providing response functions for different energies; Then, the G (E) function was calculated using the least squares method; Finally, using standard point source experiments, the air absorbed dose rate measured by the lanthanum bromide detector using G (E) function conversion was compared with the theoretical calculated value. The experimental verification results show that the relative deviation between the air absorbed dose rate obtained based on the G (E) function and the theoretical calculation value is controlled within ± 6%, which verifies the accuracy of the G (E) function. Conclusion based on γ Spectral dose conversion method, in situ γ Spectrometers can be used for measuring radiation dose.
{"title":"The measurement method of gamma ray air absorbed dose rate based on LaBr 3 (Ce) detector","authors":"Cao Qinjian, Xia Sanqiang, He Meng, Llu Liye, X. Yunshi, Li Xiaodun, Jiao Yan","doi":"10.13491/J.ISSN.1004-714X.2021.02.007","DOIUrl":"https://doi.org/10.13491/J.ISSN.1004-714X.2021.02.007","url":null,"abstract":"Objective Based on the lanthanum bromide scintillator detector, the calculation method of G(\u0000 E) function was developed to measure the air absorbed dose rate.\u0000 Methods Firstly, the gamma energy spectrumof the lanthanum bromide detector were simulated\u0000 and the response functions with different energies were determined with Monte Carlo\u0000 simulation method. Then, the G(\u0000 E) function was calculated by the least square method. Finally, the air absorbed dose\u0000 rate measured by the lanthanum bromide detector using G(\u0000 E) function conversion method was compared with the theoretical calculation value based\u0000 on the point source experiments.\u0000 Results The experimental verification results showed that the relative deviation between\u0000 thecalculated value with G(\u0000 E) function and the theoretical calculation value wasmostly controlled within ± 6%,\u0000 which verified the accuracy of G(\u0000 E) function.\u0000 Conclusion The results showed that the method of G(\u0000 E) function could be applied to calculate the gamma radiation dose rate based on the\u0000 in-situ the gamma spectrum with LaBr\u0000 3 detector.\u0000 摘要： 目的 针对溴化镧闪烁体探测器, 开展了 G(\u0000 E) 函数的计算方法研宄, 最终实现了空气吸收剂量率的测量。 方法 首先, 基于蒙特卡罗模拟计算方法, 模拟计算出溴化镧探测器的 γ 能谱, 给出不同能量的响应函数;然后, 利用 最小二乘法计算得到了 G(\u0000 E) 函数;最后, 利用标准点源实验, 将溴化镧探测器利用 G(\u0000 E) 函数转换测量得到的空气吸 收剂量率与理论计算值进行了比较。\u0000 结果 实验验证结果表明, 基于 G(\u0000 E) 函数得到的空气吸收剂量率与理论计算值 的相对偏差控制在 ± 6% 以内, 验证了 G(\u0000 E) 函数的准确性。\u0000 结论 基于 γ 谱-剂量转换方法, 就地 γ 谱仪可应用于辐射 剂量的测量。","PeriodicalId":58844,"journal":{"name":"中国辐射卫生","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47188376","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}
Pub Date : 2021-04-01DOI: 10.13491/J.ISSN.1004-714X.2021.02.001
Feng Zechen, Ma Yongzhong, W. Hongfang, Su Yaru, Zhang Zhibin, Lou Yun
Objective To study the output dose of external beam radiotherapy in Beijing and analyze the cause of output dose deviation. Guidance is given on the selection of measurement methods, calculation formulas and parameters. Methods During 2020, the output doses of medical electron accelerators, tomotherapy, cyberknife, and γ-knife were measured based on the water absorbed dose calibration factor combined with the requirements in the IAEA TRS398 and TRS483 reports, and low-energy X-rays were measured based on the air kerma calibration factor combined with the requirements in the AAPM protocal. The output dose was measured and compared with the preset irradiation value. Results A total of 59 external beam radiation therapy equipments’s output dose were investigated. 2 of the 49 accelerators’s absolute value of relative deviation between the system indication value and the measurement exceeded 3%; the deviation of other external beam radiotherapy equipments was less than 3%. Conclusion A unified method and multi-party quality control can ensure the accuracy of the output dose. In the routine operation of the equipment, the hospital should strictly implement periodic inspections to ensure accurate and reliable radiotherapy. 摘要： 目的 调查北京地方所属外照射放射治疗设备输出剂量的情况, 分析输出剂量相对偏差原因, 明确测量方法、 计算公式及参数的选取。 方法 2020 年期间, 采用水中吸收剂量校准因子结合国际原子能机构 (IAEA) TRS398 和 TRS483 号报告中的要求对医用电子加速器、螺旋断层放射治疗装置、机械臂放射治疗装置、 γ 射线立体定向放射治疗 系统的输出剂量进行测量, 采用空气比释动能校准因子结合 AAPM 方案中的要求对低能 X 射线治疗机的输出剂量进 行测量, 并与预置照射值进行比较分析输出剂量相对偏差。 结果共调查了 59 台外照射放射治疗设备的输出剂量, 49 台医用电子加速器中 2 台输出剂量相对偏差绝对值超过 3%; 其他外照射放射治疗设备的输出剂量相对偏差绝对值 均小于 3%。 结论 统一明确的测量方法和多方的质量控制检测可确保放射治疗设备输出剂量的准确, 在设备常规运 行中医院应严格执行周期性检验保证实施精确可靠的放射治疗。
Objective To study the output dose of external beam radiation in Beijing and analyze the cause of output dose deviation Guidance is given on the selection of measurement methods, calculation formulas and parameters Methods During 2020, the output doses of medical electron accelerators, tomotherapy, cyberknife, and γ- Know were measured based on the water absorbed dose calibration factor combined with the requirements in the IAEA TRS398 and TRS483 reports, and low energy X-rays were measured based on the air kernel calibration factor combined with the requirements in the AAPM protocol The output did was measured and compared with the preset radiation value Results A total of 59 external beam radiation therapy equipment's output did not have been invested 2 of the 49 accelerators' absolute value of relative deviation between the system indication value and the measurement exceeded 3%; The deviation of other external beam radiation equipment was less than 3% Conclusion A unified method and multi party quality control can ensure the accuracy of the output dose In the routing operation of the equipment, the hospital should strictly implement periodic inspections to ensure accuracy and related radiation Abstract: Objective: To investigate the output dose of external radiation therapy equipment in Beijing, analyze the reasons for the relative deviation of output dose, and clarify the selection of measurement methods, calculation formulas, and parameters. During the period of 2020, the calibration factor for absorbed dose in water was used in conjunction with the requirements of the International Atomic Energy Agency (IAEA) reports TRS398 and TRS483 for medical electron accelerators, spiral tomography radiotherapy devices, robotic arm radiotherapy devices γ The output dose of the X-ray stereotactic radiotherapy system is measured, using an air specific release energy calibration factor combined with the requirements of the AAPM scheme to measure the output dose of the low-energy X-ray therapy machine, and comparing and analyzing the relative deviation of the output dose with the preset exposure value. The results showed that a total of 59 external radiation therapy equipment were investigated for their output doses, and 2 out of 49 medical electron accelerators had relative deviation absolute values of output doses exceeding 3%; The absolute deviation of the output dose of other external radiation therapy equipment is less than 3%. Conclusion: A unified and clear measurement method and multi-party quality control testing can ensure the accuracy of the output dose of radiation therapy equipment. Traditional Chinese medicine hospitals should strictly implement periodic testing during the routine operation of the equipment to ensure the implementation of accurate and reliable radiation therapy.
{"title":"Output dose investigation and analysis of external beam radiotherapy in Beijing","authors":"Feng Zechen, Ma Yongzhong, W. Hongfang, Su Yaru, Zhang Zhibin, Lou Yun","doi":"10.13491/J.ISSN.1004-714X.2021.02.001","DOIUrl":"https://doi.org/10.13491/J.ISSN.1004-714X.2021.02.001","url":null,"abstract":"Objective To study the output dose of external beam radiotherapy in Beijing and analyze the\u0000 cause of output dose deviation. Guidance is given on the selection of measurement\u0000 methods, calculation formulas and parameters.\u0000 Methods During 2020, the output doses of medical electron accelerators, tomotherapy, cyberknife,\u0000 and γ-knife were measured based on the water absorbed dose calibration factor combined\u0000 with the requirements in the IAEA TRS398 and TRS483 reports, and low-energy X-rays\u0000 were measured based on the air kerma calibration factor combined with the requirements\u0000 in the AAPM protocal. The output dose was measured and compared with the preset irradiation\u0000 value.\u0000 Results A total of 59 external beam radiation therapy equipments’s output dose were investigated.\u0000 2 of the 49 accelerators’s absolute value of relative deviation between the system\u0000 indication value and the measurement exceeded 3%; the deviation of other external\u0000 beam radiotherapy equipments was less than 3%.\u0000 Conclusion A unified method and multi-party quality control can ensure the accuracy of the output\u0000 dose. In the routine operation of the equipment, the hospital should strictly implement\u0000 periodic inspections to ensure accurate and reliable radiotherapy.\u0000 摘要： 目的 调查北京地方所属外照射放射治疗设备输出剂量的情况, 分析输出剂量相对偏差原因, 明确测量方法、 计算公式及参数的选取。\u0000 方法 2020 年期间, 采用水中吸收剂量校准因子结合国际原子能机构 (IAEA) TRS398 和 TRS483 号报告中的要求对医用电子加速器、螺旋断层放射治疗装置、机械臂放射治疗装置、\u0000 γ 射线立体定向放射治疗 系统的输出剂量进行测量, 采用空气比释动能校准因子结合 AAPM 方案中的要求对低能 X 射线治疗机的输出剂量进 行测量, 并与预置照射值进行比较分析输出剂量相对偏差。\u0000 结果共调查了 59 台外照射放射治疗设备的输出剂量, 49 台医用电子加速器中 2 台输出剂量相对偏差绝对值超过 3%; 其他外照射放射治疗设备的输出剂量相对偏差绝对值\u0000 均小于 3%。\u0000 结论 统一明确的测量方法和多方的质量控制检测可确保放射治疗设备输出剂量的准确, 在设备常规运 行中医院应严格执行周期性检验保证实施精确可靠的放射治疗。","PeriodicalId":58844,"journal":{"name":"中国辐射卫生","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43266819","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}
Pub Date : 2021-04-01DOI: 10.13491/J.ISSN.1004-714X.2021.02.003
Shen Aiguo, Y. Junqing, Dong Zhenjun, Feng Dongying, Du Xingli, Shen Lijun, Liu Guoqiang
Objective To further strengthen the management of radiological health technical service institutions, standardize their technical service behaviors, and explore the supervision countermeasures for radiological health and technical service institutions. Methods The radiological health technical service institutions status questionnaires s were designed to survey the basic situation, professionals and technical personnel, the equipment configuration, testing items and workload of service institutions. Results By the end of 2019, there were 23 radiological health technical service institutions in Hebei province, including 8 disease control and occupational prevention institutions (accounting for 34.8%) and 15 third-party institutions (accounting for 65.2%); The distribution of regional agencies were unbalanced; There were 223 professional and technical personnel, of which 29.6% were senior technical professionals, 29.6% were intermediate technical professionals and 40.8% were other professionals. 58.8% had a bachelor’s degree or above, and 41.2% had a college degree or below; The majors of professionals were relatively scattered, with only 6.44% of radiological health, 5.15% of physics-related majors, and 51.07% of medical-related majors. Other majors involve chemical pharmacy, environmental engineering, public relations planning, food, English, accounting and other majors. The professional technical responsible person had no part-time job. The institution were totally equipped with 308 sets of radiation protection detectors and 172 sets of phantoms, basically in line with the configuration requirements; All quality control system documents such as quality management manuals, procedural documents, operating procedures, and work instructions have been established; All test items applied by laboratory measurement certification have passed; Conclusion The CDC institutions were gradually shrinking, the private institutions were gradually increasing and the nature of the institutions was gradually diversified. The allocation of regional resources was unbalanced. It is suggested to strengthen the training on the theoretical basis and professional skills of professionals in testing and evaluation. Increasing on-site practical training is a more important and effective way. It is recommended to strengthen the training of basic-level health administrative departments and supervisory agencies and improve the sense of responsibility of supervisors. 摘要： 目的 进一步加强对放射卫生技术服务机构的管理, 规范其服务行为, 探索对放射卫生技术服务机构的监管对 策。 方法设计调查表, 对服务机构的基本情况、专业技术人员、设备配置及开展检测项目、工作量等进行了调查。 结果至 2019 年底, 我省共有放射卫生技术服务机构 23家, 其中疾控和职防院所类8家, 占 34.8%, 第三方（民营)机 构类 15 家, 占 65.2%; 各区域机构分布不均衡;共有专业技术人员 223名, 其中高级技术人员占29.6%, 中级技术人员 占 29.6%, 其他人员占 40.8%; 本科及以上学历人员占 58.8%, 大专及以下学历的人员占 41.2%; 专业技术人员所学专 业相对分散, 放射卫生专业占 6.44%, 物理相关专业占了 5.15%, 医学相关专业占 51.07%, 其它专业涉及化工制药、环 境工程、公关策划、食品、英语、会计等专业；专业技术负责人无兼职情况;机构共配有放射防护检测仪仪器 308 台 (套), 模体 172 套, 基本符合配置要求; 23 家机构均建立了质量管理手册、程序性文件、操作规程和作业指导
Objective To further strengthen the management of radiological health technical service institutions, standardize their technical service behaviors, and explore the supervision counter measures for radiological health and technical service institutions Methods The radiological health technical service institutions status questionnaires were designed to survey the basic situation, professionals and technical personnel, the equipment configuration, testing items and workload of service institutions Results By the end of 2019, there were 23 radiological health technical service institutions in Hebei province, including 8 disease control and occupational prevention institutions (accounting for 34.8%) and 15 third party institutions (accounting for 65.2%); The distribution of regional agencies were unbalanced; There were 223 professional and technical personnel, of which 29.6% were senior technical professionals, 29.6% were intermediate technical professionals, and 40.8% were other professionals 58.8% had a mentor's degree or above, and 41.2% had a college degree or below; The majors of professionals were relatively scarred, with only 6.44% of radiological health, 5.15% of physics related majors, and 51.07% of medical related majors Other major involved chemical pharmacy, environmental engineering, public relationships planning, food, English, accounting, and other major The professional technical responsible person has no part time job The institution was completely equipped with 308 sets of radiation protection detectors and 172 sets of phantoms, basically in line with the configuration requirements; All quality control system documents such as quality management manuals, procedural documents, operating procedures, and work instructions have been established; All test items applied by laboratory measurement certificate have been passed; Conclusion The CDC institutions were gradually shrinking, the private institutions were gradually increasing and the nature of the institutions was gradually diversified The allocation of regional resources was unbalanced It is suggested to strengthen the training on the theoretical basis and professional skills of professionals in testing and evaluation Increasing on site practical training is a more important and effective way It is recommended to strengthen the training of basic level health administrative departments and supervisory agencies and improve the sense of responsibility of supervisors Abstract: Objective: To further strengthen the management of radiation health technology service institutions, standardize their service behavior, and explore regulatory strategies for radiation health technology service institutions. A survey questionnaire was designed to investigate the basic situation, professional and technical personnel, equipment configuration, testing projects, and workload of the service institution. As of the end of 2019, there were a total of 23 radiation health technology service institutions i
{"title":"Investigation and analysis on the status of radiological health technical service institutions in Hebei province","authors":"Shen Aiguo, Y. Junqing, Dong Zhenjun, Feng Dongying, Du Xingli, Shen Lijun, Liu Guoqiang","doi":"10.13491/J.ISSN.1004-714X.2021.02.003","DOIUrl":"https://doi.org/10.13491/J.ISSN.1004-714X.2021.02.003","url":null,"abstract":"Objective To further strengthen the management of radiological health technical service institutions,\u0000 standardize their technical service behaviors, and explore the supervision countermeasures\u0000 for radiological health and technical service institutions.\u0000 Methods The radiological health technical service institutions status questionnaires s were\u0000 designed to survey the basic situation, professionals and technical personnel, the\u0000 equipment configuration, testing items and workload of service institutions.\u0000 Results By the end of 2019, there were 23 radiological health technical service institutions\u0000 in Hebei province, including 8 disease control and occupational prevention institutions\u0000 (accounting for 34.8%) and 15 third-party institutions (accounting for 65.2%); The\u0000 distribution of regional agencies were unbalanced; There were 223 professional and\u0000 technical personnel, of which 29.6% were senior technical professionals, 29.6% were\u0000 intermediate technical professionals and 40.8% were other professionals. 58.8% had\u0000 a bachelor’s degree or above, and 41.2% had a college degree or below; The majors\u0000 of professionals were relatively scattered, with only 6.44% of radiological health,\u0000 5.15% of physics-related majors, and 51.07% of medical-related majors. Other majors\u0000 involve chemical pharmacy, environmental engineering, public relations planning, food,\u0000 English, accounting and other majors. The professional technical responsible person\u0000 had no part-time job. The institution were totally equipped with 308 sets of radiation\u0000 protection detectors and 172 sets of phantoms, basically in line with the configuration\u0000 requirements; All quality control system documents such as quality management manuals,\u0000 procedural documents, operating procedures, and work instructions have been established;\u0000 All test items applied by laboratory measurement certification have passed;\u0000 Conclusion The CDC institutions were gradually shrinking, the private institutions were gradually\u0000 increasing and the nature of the institutions was gradually diversified. The allocation\u0000 of regional resources was unbalanced. It is suggested to strengthen the training on\u0000 the theoretical basis and professional skills of professionals in testing and evaluation.\u0000 Increasing on-site practical training is a more important and effective way. It is\u0000 recommended to strengthen the training of basic-level health administrative departments\u0000 and supervisory agencies and improve the sense of responsibility of supervisors.\u0000 摘要： 目的 进一步加强对放射卫生技术服务机构的管理, 规范其服务行为, 探索对放射卫生技术服务机构的监管对 策。\u0000 方法设计调查表, 对服务机构的基本情况、专业技术人员、设备配置及开展检测项目、工作量等进行了调查。 结果至 2019 年底, 我省共有放射卫生技术服务机构 23家, 其中疾控和职防院所类8家, 占 34.8%, 第三方（民营)机 构类 15 家, 占 65.2%; 各区域机构分布不均衡;共有专业技术人员\u0000 223名, 其中高级技术人员占29.6%, 中级技术人员 占 29.6%, 其他人员占 40.8%; 本科及以上学历人员占 58.8%, 大专及以下学历的人员占 41.2%;\u0000 专业技术人员所学专 业相对分散, 放射卫生专业占 6.44%, 物理相关专业占了 5.15%, 医学相关专业占 51.07%, 其它专业涉及化工制药、环 境工程、公关策划、食品、英语、会计等专业；专业技术负责人无兼职情况;机构共配有放射防护检测仪仪器\u0000 308 台 (套), 模体 172 套, 基本符合配置要求; 23 家机构均建立了质量管理手册、程序性文件、操作规程和作业指导","PeriodicalId":58844,"journal":{"name":"中国辐射卫生","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46273542","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}
Pub Date : 2021-04-01DOI: 10.13491/J.ISSN.1004-714X.2021.02.019
JU Jinxin, Xueying Ru, Chen Erdong
According to the requirements of the instructions for the preparation of health standards of Regulations on The Drafting And Review of Health Standards, the drafting and matters needing attention of each part of instructions for the preparation of health standards were analyzed and discussed, and the suggestions on instructions for the preparation of health standards were put forward, so as to provide references for the compilation of instructions for the preparation of health standards.Instructions for the preparation of health standards should fully reflect the whole process of standard compilation and be consistent with the standard text. The compilation of each part should be detailed and appropriate. In order to analyze the relationship with relevant domestic documents and other standards, existing documents and standards should be listed as comprehensively as possible. According to the different adoption of standards and different requirements, the comparative analysis with international standards should be discussed. The basis of main technical contents should be mainly discussed, and the basis for determining technical indicators should be fully detailed and clear. Attention should be paid to the compilation of instructions for the preparation of health standards, which should be treated as standard text and play an important role in instructions for the preparation of health standards. 摘要： 根据《卫生健康标准起草和审查管理规定》中对编制说明的要求, 分析探讨卫生健康标准编制说明各部分内容 的编写及注意事项, 提出编写建议, 为卫生健康标准编制说明的编写提供借鉴和参考。卫生健康标准编制说明应完整 体现标准编制全过程, 并与标准文本对应一致。各部分内容的编写应详略得当；与国内相关文件和其他标准的关系分 析, 应尽可能全面列出现有文件和标准;与国际标准的对比分析, 根据不同的采标情况按不同的要求论述;主要技术内 容依据应重点论述, 技术指标确定依据应充分详实、叙述清楚。应重视卫生健康标准编制说明的编写, 与标准文本等 同对待, 发挥编制说明的重要作用。
{"title":"Discussion on the compilation of instructions for the preparation of health standards","authors":"JU Jinxin, Xueying Ru, Chen Erdong","doi":"10.13491/J.ISSN.1004-714X.2021.02.019","DOIUrl":"https://doi.org/10.13491/J.ISSN.1004-714X.2021.02.019","url":null,"abstract":"According to the requirements of the instructions for the preparation of health standards\u0000 of Regulations on The Drafting And Review of Health Standards, the drafting and matters needing attention of each part of instructions for the\u0000 preparation of health standards were analyzed and discussed, and the suggestions on\u0000 instructions for the preparation of health standards were put forward, so as to provide\u0000 references for the compilation of instructions for the preparation of health standards.Instructions\u0000 for the preparation of health standards should fully reflect the whole process of\u0000 standard compilation and be consistent with the standard text. The compilation of\u0000 each part should be detailed and appropriate. In order to analyze the relationship\u0000 with relevant domestic documents and other standards, existing documents and standards\u0000 should be listed as comprehensively as possible. According to the different adoption\u0000 of standards and different requirements, the comparative analysis with international\u0000 standards should be discussed. The basis of main technical contents should be mainly\u0000 discussed, and the basis for determining technical indicators should be fully detailed\u0000 and clear. Attention should be paid to the compilation of instructions for the preparation\u0000 of health standards, which should be treated as standard text and play an important\u0000 role in instructions for the preparation of health standards.\u0000 摘要： 根据《卫生健康标准起草和审查管理规定》中对编制说明的要求, 分析探讨卫生健康标准编制说明各部分内容 的编写及注意事项, 提出编写建议, 为卫生健康标准编制说明的编写提供借鉴和参考。卫生健康标准编制说明应完整\u0000 体现标准编制全过程, 并与标准文本对应一致。各部分内容的编写应详略得当；与国内相关文件和其他标准的关系分 析, 应尽可能全面列出现有文件和标准;与国际标准的对比分析,\u0000 根据不同的采标情况按不同的要求论述;主要技术内 容依据应重点论述, 技术指标确定依据应充分详实、叙述清楚。应重视卫生健康标准编制说明的编写, 与标准文本等 同对待,\u0000 发挥编制说明的重要作用。","PeriodicalId":58844,"journal":{"name":"中国辐射卫生","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47615744","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}
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