Establishment of daily quality assurance program and analysis of dosimetric characteristics’ longterm stability for mobile intraoperative radiation therapy accelerator

汪隽琦; 马金利; 胡伟刚; 孙力宁

doi:10.3969/j.issn.1007-3969.2014.01.009

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Establishment of daily quality assurance program and analysis of dosimetric characteristics’ longterm stability for mobile intraoperative radiation therapy accelerator

更新时间：2025-12-31

- Establishment of daily quality assurance program and analysis of dosimetric characteristics’ longterm stability for mobile intraoperative radiation therapy accelerator
- China Oncology Vol. 24, Issue 1, Pages: 52-56(2014)
- 作者机构：
  
  复旦大学附属肿瘤医院放疗科，复旦大学上海医学院肿瘤学系,上海,200032
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.1007-3969.2014.01.009
  CLC：
- Published Online：14 February 2014，
  
  Published：14 February 2014
- 稿件说明：
移动端阅览
汪隽琦,马金利,胡伟刚,孙力宁. 移动式电子束术中放疗系统日常质量保证程序的建立及剂量参数稳定性分析[J]. 中国癌症杂志, 2014, 24(1): 52-56.

汪隽琦, 马金利, 胡伟刚, et al. Establishment of daily quality assurance program and analysis of dosimetric characteristics’ longterm stability for mobile intraoperative radiation therapy accelerator[J]. China Oncology, 2014, 24(1): 52-56.
汪隽琦,马金利,胡伟刚,孙力宁. 移动式电子束术中放疗系统日常质量保证程序的建立及剂量参数稳定性分析[J]. 中国癌症杂志, 2014, 24(1): 52-56. DOI： 10.3969/j.issn.1007-3969.2014.01.009.

汪隽琦, 马金利, 胡伟刚, et al. Establishment of daily quality assurance program and analysis of dosimetric characteristics’ longterm stability for mobile intraoperative radiation therapy accelerator[J]. China Oncology, 2014, 24(1): 52-56. DOI： 10.3969/j.issn.1007-3969.2014.01.009.

摘要

背景与目的：目前移动式电子束术中放疗已成为多种恶性肿瘤重要的辅助治疗手段，本研究旨在建立该系统的日常质量保证(quality assurance，QA)程序并评价其剂量参数的稳定性。方法：QA程序包括安全性及功能性和能量指标及输出剂量的测试，并对2年来质控数据进行分析，评价剂量参数的稳定性。结果：安全性和功能性的测试结果均正常；4、6、9和12 MeV电子束的能量指标分别为(0.666±0.015)mm、(0.839±0.009)mm、(0.781±0.010)mm和(0.724±0.009)mm，输出剂量误差分别为(0.511±0.671)%、(0.278±0.516)%、(0.368±0.532)%和(0.382±0.912)%，均符合相应标准且无随时间变化的趋势。结论：建立的日常QA程序适合于术中放疗系统，且该系统自身的稳定性能满足临床使用要求。

Abstract

Background and purpose: Currently

intraoperative radiation therapy (IORT) has become the adjuvant therapy of cancer. The study was to establish the daily quality assurance (QA) program and analyze dosimetric characteristics’ long-term stability for mobile IORT accelerator. Methods: The QA program of this study included two parts: safety and functionality and energy and output. The two years’ QA datasets were acquired and analyzed to investigate the stability of energy and output. Results: All safety and functionality tests passed on a daily basis. The energy index was (0.666±0.015)mm

(0.839±0.009)mm

(0.781±0.010)mm

(0.724±0.009)mm and the output dose error was (0.511 ± 0.671)%

(0.278 ± 0.516)%

(0.368 ± 0.532)%

(0.382 ± 0.912)% for all energy

respectively. There was no significant time trend in the dosimetric characteristics. Conclusion: The daily QA program is suitable for mobile IORT accelerator. The long-term stability is acceptable for IORT in clinical use.

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