通过有规则的布置子野解决全中枢放疗射野衔接和剂量冷热点

目的 掌握2016年度福建省放射治疗应用基本情况。方法 采用统一设计的调查表,通过普查的方法搜集全省放射治疗单位的放射治疗及其配套设备的种类与数量、放射治疗工作人员数以及放射治疗质量控制工作开展情况,统计26家医院的放射治疗患者和门诊量等数据;通过相关性和多重线性回归分析建立模型来估算全省的放射治疗患者总数。结果 2016年福建省有32家放射治疗单位,放射治疗设备62台套,模拟定位机33台,放射治疗计划系统（TPS）57套,放射治疗工作人员762名,可搜集到的26家医院的放射治疗患者共计15156人。根据多元线性回归模型得到医用电子加速器的应用频度与门急诊和住院量,放射治疗工作人员数,加速器设备数呈正相关（r=0.311、0.893、0.956,P<0.05）;后装治疗的应用频度与门急诊和住院量、放射治疗工作人员数、后装设备数呈正相关（r=0.307、0.966、0.988,P<0.05）。通过估算得到福建省2016年度放射治疗应用频度为0.54例/千人口。经调查各单位基本都能按照规定开展加速器输出剂量校准,但晨检仪、井型电离室等放射治疗质控设备的配置明显不足。结论 近几年我省的放射治疗发展较快,规范、加强应用过程中的质量控制和监督应当作为将来我省放射治疗管理的关注重点。

To solve beam junctions and eliminate dose cold and hotspots in craniospinal irradiation by regular arrangement of segments

Objective To ascertain the basic situation of radiotherapy in Fujian in 2016. Methods Based on the unified questionnaire, the types and quantity of radiotherapy and its corollary equipment, the number of radiotherapy staff and the work for quality control were surveyed in the radiotherapy units in the whole province, and the data on patients undergoing radiotherapy and other types of patients were collected from 26 hospitals. The total number of radiotherapy patients in the whole province was estimated by the correlation analysis and multiple linear regression analysis. Results Radiotherapy was performed in a total of 32 hospitals in Fujian province in 2016. Among them, there were 62 sets of radiotherapy equipment, 33 sets of the simulators, 57 sets of treatment planning systems and 762 staff. The total number of 15156 radiotherapy patients in 26 hospital were available for the survey. Multiple linear regression models showed that the frequency of application of medical electron accelerator were positively correlated with number of outpatients, emergency patients and inpatients, number of radiotherapy staff, number of electron accelerators (r=0.311, 0.893, 0.956, P<0.05). It also showed that the frequency of aterloading brachytherapy were positively correlated with number of outpatients, emergency patients and inpatients, number of radiotherapy staff, number of aterloading brachytherapy units (r=0.307, 0.966, 0.988, P<0.05). The frequency of radiotherapy was 0.54 patients per 1000 population in Fujian in 2016. The delivered dose calibration of accelerators was performed in all hosptitals involved in line with the relevant regulations, but the number of quality control equipment for radiotherapy was insufficient, such as the QA beam checker or well-type ionization chamber. Conclusions In recent years, the rapid development of radiotherapy has been seen in Fujian province. The radiotherapy management should be focused on standardernized and improved quality control and regulation in future.