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arXiv 1608.08068physics.med-ph
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粒子治疗应用的二次辐射测量:PMMA靶中$^4$ He离子束产生的核碎裂

Secondary radiation measurements for particle therapy applications: nuclear fragmentation produced by $^4$He ion beams in a PMMA target

M. Marafini, R. Paramatti, D. Pinci, G. Battistoni, F. Collamati, E. De Lucia, R. Faccini, P. M. Frallicciardi, C. Mancini-Terracciano, I. Mattei, S. Muraro, L.… 展开作者

M. Marafini, R. Paramatti, D. Pinci, G. Battistoni, F. Collamati, E. De Lucia, R. Faccini, P. M. Frallicciardi, C. Mancini-Terracciano, I. Mattei, S. Muraro, L. Piersanti, M. Rovituso, A. Rucinski, A. Russomando, A. Sarti, A. Sciubba, E. Solfaroli Camillocci, M. Toppi, G. Traini, C. Voena, V. Patera

摘要:

目前,由于轻离子束增强的相对生物有效性和高空间选择性,利用轻离子束对肿瘤进行粒子治疗的兴趣越来越大。特别是通过使用$^4$ He射弹获得了有希望的结果。与使用质子进行的治疗不同,束离子在与患者体内的原子核相互作用时可以经历碎裂过程。本文报道了在海德堡离子束治疗中心进行的测量结果。本文首次从不同角度测量了102、125和145 MeV/u的$^4$ He离子束轰击聚甲基丙烯酸甲酯靶产生的碎片质子、氘子和氚子的绝对通量和能谱。考虑到为临床常规中$^4$ He射束的临床使用而开发的治疗计划软件的必要优化和审查以及Monte Carlo算法预测的相对基准,所获得的结果尤其相关。

英文摘要:

Nowadays there is a growing interest in Particle Therapy treatments exploiting light ion beams against tumors due to their enhanced Relative Biological Effectiveness and high space selectivity. In particular promising results are obtained by the use of $^4$He projectiles. Unlike the treatments performed using protons, the beam ions can undergo a fragmentation process when interacting with the atomic nuclei in the patient body. In this paper the results of measurements performed at the Heidelberg Ion-Beam Therapy center are reported. For the first time the absolute fluxes and the energy spectra of the fragments - protons, deuterons, and tritons - produced by $^4$He ion beams of 102, 125 and 145 MeV/u energies on a poly-methyl methacrylate target were evaluated at different angles. The obtained results are particularly relevant in view of the necessary optimization and review of the Treatment Planning Software being developed for clinical use of $^4$He beams in clinical routine and the relative benchmarking of Monte Carlo algorithm predictions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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