| 袁继龙,李明生,程金生.利用EBT3胶片测量主动式点扫描质子重离子放疗设备照射野一致性研究[J].中华放射医学与防护杂志,2016,36(8):626-629.Yuan Jilong,Li Mingsheng,Cheng Jinsheng.Quality control research of active spot scanning proton and heavy ion accelerator's radiation field uniformity[J].Chin J Radiol Med Prot,2016,36(8):626-629 |
| 利用EBT3胶片测量主动式点扫描质子重离子放疗设备照射野一致性研究 |
| Quality control research of active spot scanning proton and heavy ion accelerator's radiation field uniformity |
| 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 照射野一致性 |
| 英文关键词:Proton and heavy ion accelerator Active spot scanning Radiation field uniformity |
| 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 研究主动式点扫描质子重离子加速器所形成照射野的一致性的检测方法。方法 在标定过的离子束流下进行EBT3胶片刻度，建立EBT3胶片的剂量刻度曲线，然后在4个治疗室中，EBT3胶片放置于固体水模体中进行照射，胶片位置针对质子和碳离子不同能量（质子：94.29、150.68和212.62 MeV；碳离子：175.99、283.43和412.54 MeV/u）前后放置不同厚度的固体水模体插板，最后扫描EBT3胶片图像，分析照射野剂量分布大小和规定照射野大小的差异及平坦度。结果 4个治疗室，不同条件下照射野一致性检测的照射野大小均<2 mm，平坦度均控制在5%之内。结论 EBT3胶片可以检测主动式点扫描质子重离子加速器的照射野一致性。 |
| 英文摘要: |
| 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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