| 引用本文： |
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丁艳秋,林敏,吴伟明.丙氨酸应用于辐射治疗水平的剂量学性能研究[J].广西科学,2006,13(2):135-138. [点击复制]
- DING Yan-qiu,LIN Min,WU Wei-ming.Research on Dosimetry Characteristics of Alanine Dosimeter Used for the Therapy-level Dose Range[J].Guangxi Sciences,2006,13(2):135-138. [点击复制]
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| 摘要: |
| 研究自制的丙氨酸剂量计应用于辐射治疗水平吸收剂量测量的剂量测量重复性、剂量率依赖性、剂量响应线性。利用电子直线加速器产生的6MV X射线辐照丙氨酸剂量计,测得其剂量测量的重复性为2.6%(1σ);剂量率范围为1~6Gy/min时,剂量响应变化为1.9%(1σ);利用钴治疗机发射的γ射线,照射剂量范围为(1~10Gy),测得ESR响应值随吸收剂量变化的线性相关系数为0.9996。丙氨酸剂量计的合成标准不确定度为3.3%,能满足辐射治疗水平剂量测量的要求,但剂量测量的重复性有待改进。 |
| 关键词: 丙氨酸剂量计 辐射治疗水平 剂量学 性能 |
| DOI： |
| 投稿时间：2005-12-07修订日期：2006-01-23 |
| 基金项目: |
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| Research on Dosimetry Characteristics of Alanine Dosimeter Used for the Therapy-level Dose Range |
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DING Yan-qiu1,2, LIN Min1, WU Wei-ming2
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| (1.Radiometrology Center, China Institute of Atomic Energy(CIAE), Beijing, 102413, China;2.College of Physics Science and Technology, Guangxi University, Nanning, Guangxi, 530004, China) |
| Abstract: |
| The basic characteristics, including reproducibility of dose measurement, dependence of dose rate and linear dose response, on radiotherapy level dosimetry of alanine dosimeter manufactured by CIAE are studied.The results are 2.6% (1σ) for reproducibility of dose measurement, 1.9% (1σ) for the variation of dose rate.The linear relation coefficient for the dose response is 0.9996.The combined standard uncertainty of the alanine dosimeter for radiotherapy dose level is 3.3% and has the potentian to be used for radiotherapy dose measurement.But it also shows that reproducibility of dose measurement needs to be improved in the future. |
| Key words: alanine radiotherapy level dosimetry characteristics |
