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"GDR in radiotherapy treatment fields with 18 MV accelerators"
R.R. Martín-Landrove, J. Dávila, H.R. Vega-Carrillo, M.T. Barrera, A.J. Kreiner, F. Pino, H. Barros, E.D. Greaves and L. Sajo-Bohus
Proc. of the "14th International Conference on Nuclear Reaction Mechanisms" (NRM 2015), Villa Monastero, Varenna, Italy, June 15-19, 2015. Ed. A. Ferrari, T. Kawano, M. Chadwick, F. Cerutti and P. Schoofs
CERN-Proceedings-2015-001, CERN, Geneva (2015) 369-376
ISBN: 978-92-9083-418-2 (paperback)
978-92-9083-419-9 (on-line)
Giant dipole photo-nuclear reactions generated during Linac radiotherapy are of concern due to the undesirable neutron dose delivered to patients. Nuclear track methodology provides an estimation of gradients of photo-neutrons fields in radiotherapy treatments for 18 MV linear accelerators and it revealed an unexpected behaviour around isocenter. Enhancement effects are observed on absorbed dose due to both scattered photo-neutrons and (γ,n) reactions. Thermal neutrons can give a dose boost if the tumour is loaded with 10B and a new BNCT approach combined with the standard photon field is proposed.
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