| Cui Yong,Liu Baochen,Chen Zhongxing,Guo Junqiao,Luo Suming,He Zhijian,Yuan Jilong.Verification of dose parameters under reference and non-reference conditions for radiotherapy in Liaoning province[J].Chinese Journal of Radiological Medicine and Protection,2014,34(6):456-460 |
| Verification of dose parameters under reference and non-reference conditions for radiotherapy in Liaoning province |
| Received:November 25, 2013 |
| DOI：10.3760/cma.j.issn.0254-5098.2014.06.015 |
| KeyWords:TLD Reference and non-reference conditions Finger ionization chamber Plane parallel ionization chambers Photon beams Electron beams |
| FundProject:IAEA基金资助项目（11916/R0）；卫生行业科研专项（201002009） |
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| Abstract:: |
| Objective To verify the reliability of dose parameters of radiotherapy under reference and non-reference conditions by using TLD. Methods Dose parameters were verified by using TLDs under reference and non-reference conditions, including the maximum dose in axel of 5 electron beams with energy of 9 MeV and the variations of dose by depth, source-skin distance, exposure field and 45° wedge for 10 photon beams with energy of 6 MV in 5 hospitals. Results The average relative deviation of 6 MV photon beam measured between TLDs and finger ionization chambers were 4.45%, within ±7% as required by IAEA. The average relative deviation of 9 MeV electron beam measured between TLDs and plane parallel chambers were 2.45%, within ±5% was required by IAEA. Conclusions Measuring dosimetric parameters by using TLDs under reference and non-reference conditions was reliable and feasible. |
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