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Updated: May 5, 2026

Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies
Published on: February 6, 2019
Neutron H*(10) inside a proton therapy facility: comparison between Monte Carlo simulations and WENDI-2 measurements
V De Smet1, F Stichelbaut2, T Vanaudenhove3
1Institut de Recherche de l'Institut Supérieur Industriel de Bruxelles, Département Nucléaire, Rue Royale 150, 1000 Bruxelles, Belgium Université Libre de Bruxelles, Interuniversity Institute for High Energies, Boulevard du Triomphe 2, 1050 Bruxelles, Belgium desmet@isib.be.
Abstract:
Inside an IBA proton therapy centre, secondary neutrons are produced due to nuclear interactions of the proton beam with matter mainly inside the cyclotron, the beam line, the treatment nozzle and the patient. Accurate measurements of the neutron ambient dose equivalent H*(10) in such a facility require the use of a detector that has a good sensitivity for neutrons ranging from thermal energies up to 230 MeV, such as for instance the WENDI-2 detector. WENDI-2 measurements have been performed at the Westdeutsches Protonentherapiezentrum Essen, at several positions around the cyclotron room and around a gantry treatment room operated in two different beam delivery modes: Pencil Beam Scanning and Double Scattering. These measurements are compared with Monte Carlo simulation results for the neutron H*(10) obtained with MCNPX 2.5.0 and GEANT4 9.6.
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