| 程金生,路吉龙,李开宝.IAEA剂量实用规范与我国“放疗剂量学规定”的比较研究[J].中华放射医学与防护杂志,2004,24(2):160-162.CHENG Jin-sheng,LU Ji-long,LI Kai-bao.Comparison of IAEA dosimetry code of practice with China radiotherapy dosimetry code issued in 1984[J].Chin J Radiol Med Prot,2004,24(2):160-162 |
| IAEA剂量实用规范与我国“放疗剂量学规定”的比较研究 |
| Comparison of IAEA dosimetry code of practice with China radiotherapy dosimetry code issued in 1984 |
| 投稿时间：2008-08-20 |
| DOI： |
| 中文关键词: 放射治疗 吸收剂量 电离室 能量 比较 |
| 英文关键词:Radiotherapy Absorbed dose Ionization chamber Energy Comparison |
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| 中文摘要: |
| 目的 研究用于放射治疗剂量测定的国际原子能机构(IAEA)第277号技术报告《光子束和电子束吸收剂量的确定》国际实用规范和我国1984年国家计量局和卫生部颁布的基于ICRU23号技术报告的《关于肿瘤放射治疗剂量学的若干规定》之间的差异。方法 用理论计算和实验测量2种方法比较了不同的电离室在测量60Coγ射线和3种能量的高能X射线水中吸收剂量所得结果。结果 大部分常用的电离室在不同的光子能量下使用两种方法所测的结果差异小于1%,只有1个电离室的结果大于1%,并小于1.5%。结论 现在放射治疗对剂量有更高的精度要求,所以我们建议尽量采用IAEA国际实用规范。 |
| 英文摘要: |
| Objective To study the difference between the two dosimetry protocols: IAEA Technical Report Series No. 277, Absorbed Dose Determination in Photon and Electron Beams, an international Code of Practice and China Radiotherapy Dosimetry Code issued by China Ministry of Health and Bureau of Metrology in 1984. Methods Theoretical calculation and experimental measurement were used to compare the differences results of absorbed dose from 4 high energy photon beams. Results For most conventional ionization chambers, the difference in results was within 1%, but the difference was close to 1. 5% for one ionization chamber. Conclusion Subject to the two dosimetry codes difference in measured absorbed dose is within 1. 5%. It is better to follow the new IAEA dosimetry protocol in China. |
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