| 程金生,袁继龙,李明生.主动式点扫描质子重离子加速器质量检测研究[J].中华放射医学与防护杂志,2016,36(8):621-625.Cheng Jinsheng,Yuan Jilong,Li Mingsheng.Research on quality testing for active spot scanning proton and heavy ion accelerator[J].Chin J Radiol Med Prot,2016,36(8):621-625 |
| 主动式点扫描质子重离子加速器质量检测研究 |
| Research on quality testing for active spot scanning proton and heavy ion accelerator |
| 投稿时间：2015-09-29 |
| DOI：10.3760/cma.j.issn.0254-5098.2016.08.014 |
| 中文关键词: 质子重离子加速器 主动式点扫描 质量检测 |
| 英文关键词:Proton and heavy ion accelerator Active spot scanning Quality test |
| 基金项目:国际原子能机构国际合作项目（CPR6006） |
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| 中文摘要: |
| 目的 对主动式点扫描质子重离子加速器剂量传输系统进行质量检测，为相关设备质量检测研究提供参考。方法 在4个治疗室中，分别采用0.6 cc指型电离室和辐射胶片测量质子重离子加速器在每间治疗室的输出剂量重复性、剂量线性、剂量日稳定性、深度剂量分布、束流扫描位置偏差和射野的一致性。结果 4个治疗室分别对应的4个终端的剂量重复性变异系数均<1.5%，剂量线性最大偏差均<2%，剂量日稳定性偏差均<2%，深度剂量分布稳定性均在2%之内，束流扫描位置偏差均<1 mm，射野一致性中射野大小偏差均<2 mm，射野平坦度均<±5%。结论 本研究涉及的主动式点扫描质子重离子加速器质量检测的各项指标均符合国际电工委员会（IEC）相关标准草案的要求。 |
| 英文摘要: |
| Objective To study the quality testing of dose delivery system of the active spot scanning proton and heavy ion accelerator, in order to provide the reference for the quality control of related equipment.Methods In the four therapy rooms, both 0.6 cc chambers and Gafchromic EBT3 films were used, respectively, to test the accelerator for dose reproducibility, dose linearity, dose stability, depth dose distribution, beam scanning position deviation and radiation field uniformity in each therapy room. Results Dose reproducibility variation coefficients are all less than 1.5%, dose linearity's maximum deviations less than 2%, dose stability's deviations less than 2%, depth dose distribution stability within 2%, beam scanning position deviation less than 1 mm, consistency of irradiation field's deviation less than 2 mm, and flatness within ±5%. Conclusions The indicators about quality testing for the active spot scanning proton and heavy ion accelerator are all in line with the requirements of IEC standards draft. |
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