Proton therapy dosimetry using the scintillation of the silica fibers
Proton therapy dosimetry using the scintillation of the silica fibers
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DOI：
10.1364/ol.42.000847
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发表时间：
2017-02-15
期刊：
影响因子：
3.6
通讯作者：
Finlay, Jarod C.
中科院分区：
文献类型：
--
作者：
Darafsheh, Arash;Taleei, Reza;Finlay, Jarod C.
我们研究了使用裸石英玻璃纤维闪烁测量质子治疗剂量的可行性。用能量为 100-225 MeV 的质子束照射的模拟组织模型中不同深度处的光纤发射光谱在 460 和 650 nm 处显示出两个不同的峰，其性质与二氧化硅点缺陷有关。我们的实验结果和蒙特卡罗模拟表明。切伦科夫辐射不能解释这种现象。我们表明，650 nm 处的峰值强度与质子剂量相关，电离猝灭的影响最小，而 460 nm 处的强度峰值低于辐射剂量。 (C) 2017年美国光学学会
We investigate the feasibility of proton therapy dose measurement by using scintillation of a bare silica glass fiber. The emission spectra of the optical fiber at various depths in tissue-mimicking phantoms, irradiated with proton beams of energies 100-225 MeV show two distinct peaks at 460 and 650 nm whose nature is connected with the silica point defects. Our experimental results and Monte Carlo simulation showed that the. Cerenkov radiation cannot be responsible for such a phenomenon. We showed that the intensity of the peak at 650 nm correlates with the proton dose with a minimal effect of ionization quenching, while the intensity peak at 460 nm under-reports the radiation dose. (C) 2017 Optical Society of America