立体定向放射治疗设备安全性检测评价方案及案例分析
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摘要
目的:评价立体定向放射治疗设备的安全性检测,保障立体定向放射治疗设备的安全使用。方法:根据国家相关标准制定立体定向放射治疗设备安全性检测步骤和评价方法,分析评价5种不同品牌的立体定向放射治疗设备的机械精度、输出剂量和射野输出均匀性等指标。结果:经对5种立体定向放射治疗设备检测,其等中心精度、光射野一致性、射野输出均匀性以及机架角度改变情况下的X射线输出剂量存在明显差异;而治疗床、治疗头及机架机械精度、输出剂量以及不同剂量率下X射线输出剂量差异不明显。结论:制定立体定向放射治疗设备安全性检测评价方案,对立体定向放射治疗设备进行安全性检测,可为立体定向放射治疗设备的安全性能提供保障。
Objective: To evaluate the safety detection of stereotactic radiotherapy equipment and ensure the safe application of this kind of equipment. Methods: According to the relevant national standards to formulate the procedure and evaluation method of safety detection of stereotactic radiotherapy equipment, as well as to analyze and evaluate series indexes included mechanical accuracy, output dose and uniformity of field output of stereotactic radiotherapy equipments of 5 kinds of brands. Results: Through detected the five kinds of stereotactic radiotherapy equipments, there were obvious differences in isocentric accuracy, consistency of optical field, uniformity of field output, and the output dose of X-ray when the frame angle was changed. While, there were no significant difference in mechanical accuracy and output dose of treatment bed, treatment head and rack, as well as output dose of X-ray under different dosage rate. Conclusion: The formulation of evaluation scheme of safety detection of stereotactic radiotherapy equipment can implement safety detection for this kind of equipment and can provide guarantee for safe performance of this kind of equipment.
Objective: To evaluate the safety detection of stereotactic radiotherapy equipment and ensure the safe application of this kind of equipment. Methods: According to the relevant national standards to formulate the procedure and evaluation method of safety detection of stereotactic radiotherapy equipment, as well as to analyze and evaluate series indexes included mechanical accuracy, output dose and uniformity of field output of stereotactic radiotherapy equipments of 5 kinds of brands. Results: Through detected the five kinds of stereotactic radiotherapy equipments, there were obvious differences in isocentric accuracy, consistency of optical field, uniformity of field output, and the output dose of X-ray when the frame angle was changed. While, there were no significant difference in mechanical accuracy and output dose of treatment bed, treatment head and rack, as well as output dose of X-ray under different dosage rate. Conclusion: The formulation of evaluation scheme of safety detection of stereotactic radiotherapy equipment can implement safety detection for this kind of equipment and can provide guarantee for safe performance of this kind of equipment.
引文
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[2]唐璠.肿瘤患者放射治疗的精确定位和质量控制[J].医疗装备,2018,31(19):23-24.
[3]国家标准化管理委员会,国家质量监督检验检疫总局.医用电气设备第2部分:能量为1 MeV至50 MeV电子加速器安全通用要求:GB 9706.5-2008[S].国家质量监督检验检疫总局,2008-12-15.
[4]Klein EE,Hanley J,Bayouth J,et al.Task Group 142 report:quality assurance of medical accelerators[J].Medical Physics,2009,36(9):4197.
[5]中国国家标准化管理委员会,国家质量监督检验检疫总局.医用电气设备第1部分:安全通用要求:GB9706.15-2008[S].国家质量监督检验检疫总局,2008-12-15.
[6]中国国家标准化管理委员会,国家质量监督检验检疫总局.医用电子加速器性能和试验方法:GB15213-2016[S].国家质量监督检验检疫总局,2016-06-14.
[7]国家技术监督局.医用电子加速器性能和试验方法:GB15213-94[S].国家技术监督局,1994-09-24.
[8]中国国家标准化管理委员会,国家质量监督检验检疫总局.医用电子加速器试验和周期检测规程:GBT19046-2013[S].国家质量监督检验检疫总局,2013-08-01.
[9]胡杰,陶建民,孙光荣.医用直线加速器等中心的质量控制和质量保证[J].中国医疗器械杂志,2007,31(3):213-215.
[10]胡逸民.肿瘤放射物理学[M].北京:原子能出版社,2003.
[11]邓小武,钟强荣.放射治疗设备与技术的最新发展和应用[J].分子诊断与治疗杂志,2002,14(4):8-13.
[12]张春光,张焜毅,张俊广,等.使用EPID装置调整MLC的灯光野与射线野一致性[J].中国医学装备,2007,4(9):44-46.
[13]胡逸民,张红志,戴建荣.肿瘤放射物理学[M].北京:原子能出版社,1999.
[14]戴建荣,胡逸民.X线立体定向治疗靶点位置精确度分析[J].中华放射肿瘤学杂志,1996(2):37-40.
[15]王颖,于金明.放射治疗中质量保证和质量控制及其重要性[J].重庆医学,2015,44(34):4753-4754.