| Yuan Jilong,Li Mingsheng,Cheng Jinsheng.Quality control research of active spot scanning proton and heavy ion accelerator's radiation field uniformity[J].Chinese Journal of Radiological Medicine and Protection,2016,36(8):626-629 |
| Quality control research of active spot scanning proton and heavy ion accelerator's radiation field uniformity |
| Received:September 29, 2015 |
| DOI：10.3760/cma.j.issn.0254-5098.2016.08.014 |
| KeyWords:Proton and heavy ion accelerator Active spot scanning Radiation field uniformity |
| FundProject:国际原子能机构国际合作项目（CPR6006） |
| Author Name | Affiliation | E-mail | | Yuan Jilong | Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China | | | Li Mingsheng | Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China | | | Cheng Jinsheng | Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China | chengjs3393@163.com |
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| Abstract:: |
| Objective To develop the method for testing the consistency of irradiation field produced by the active spot scanning proton and heavy ion accelerator. Methods Calibration of the EBT3 films were carried out with the calibrated ion beam to establish the dose calibration curve. According to the different proton and carbon ion energies (proton:94.29, 150.68, 212.62 MeV; carbon ion:175.99, 283.43, 412.54 MeV/u), EBT3 films were located in the solid water phantoms in each therapy room, respectively. Finally, the irradiated EBT3 films were scanned and the radiation field size's deviation and flatness were analyzed. Results In different conditions, radiation field size's deviations were all less than 2 mm and the flatness parameters were all controlled below the 5%. Conclusions EBT3 films can be used to test the active spot scanning proton and heavy ion accelerator's radiation field uniformity. |
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