Development of novel neutron camera to estimate secondary particle dose for safe proton therapy

L. Tagawa, J. Kataoka, K. Sueoka, K. Fujieda, T. Kurihara, M. Arimoto, S. Mochizuki, T. Maruhashi, T. Toshito, M. Kimura, T. Inaniwa

Research output: Contribution to journalReview article

1 Citation (Scopus)

Abstract

Proton therapy causes less damage to healthy tissue compared to other radiation therapies; however, the possible damage caused by secondary, fast neutrons is almost unknown. In some simulations, neutron dose amounts to 10% of the proton dose; therefore, a real-time visualization of the neutron dose is needed. We have developed a neutron camera that can visualize the direction and intensity of fast neutron sources. The camera consists of eight units of a plastic scintillator (EJ-299-34) coupled with a compact PMT (R9880U). We demonstrate that a 252Cf neutron source is correctly imaged with an angular resolution of 15.5 deg (FWHM). In addition, fast neutrons emitted from the brass block irradiated by 70 MeV were successfully monitored in real time. Finally, we present our prospects for future clinical applications.

Original languageEnglish
Pages (from-to)31-33
Number of pages3
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume936
DOIs
Publication statusPublished - 2019 Aug 21

Keywords

  • Dose estimation
  • Fast neutron
  • Proton therapy
  • Pulse shape discrimination
  • Time of flight

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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