Abstract
The aim of this study is to compare dose enhancement of various agents, nanoparticles and chemotherapy drugs for neutron capture therapy. A 252Cf source was simulated to obtain its dosimetric parameters, including air kerma strength, dose rate constant, radial dose function and total dose rates. These results were compared with previously published data. Using 252Cf as a neutron source, the in-tumour dose enhancements in the presence of atomic 10B, 157Gd and 33S agents; 10B, 157Gd, 33S nanoparticles; and Bortezomib and Amifostine chemotherapy drugs were calculated and compared in neutron capture therapy. Monte Carlo code MCNPX was used for simulation of the 252Cf source, a soft tissue phantom, and a tumour containing each capture agent. Dose enhancement for 100, 200 and 500 ppm of the mentioned media was calculated. Calculated dosimetric parameters of the 252Cf source were in agreement with previously published values. In comparison to other agents, maximum dose enhancement factor was obtained for 500 ppm of atomic 10B agent and 10B nanoparticles, equal to 1.06 and 1.08, respectively. Additionally, Bortezomib showed a considerable dose enhancement level. From a dose enhancement point of view, media containing 10B are the best agents in neutron capture therapy. Bortezomib is a chemotherapy drug containing boron and can be proposed as an agent in boron neutron capture therapy. However, it should be noted that other physical, chemical and medical criteria should be considered in comparing the mentioned agents before their clinical use in neutron capture therapy.
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The authors would like to appreciate Iran National Science Foundation (INSF) for financial support of this work.
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Khosroabadi, M., Ghorbani, M., Rahmani, F. et al. Neutron capture therapy: a comparison between dose enhancement of various agents, nanoparticles and chemotherapy drugs. Australas Phys Eng Sci Med 37, 541–549 (2014). https://doi.org/10.1007/s13246-014-0284-7
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DOI: https://doi.org/10.1007/s13246-014-0284-7