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

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

    Research output: Contribution to journalArticle

    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.

    Fingerprint

    fast neutrons
    therapy
    Neutrons
    Protons
    Cameras
    cameras
    neutron sources
    neutrons
    dosage
    protons
    estimates
    Neutron sources
    damage
    brasses
    angular resolution
    scintillation counters
    radiation therapy
    plastics
    Radiotherapy
    Brass

    Keywords

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

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics
    • Instrumentation

    Cite this

    Development of novel neutron camera to estimate secondary particle dose for safe proton therapy. / Tagawa, L.; Kataoka, Jun; Sueoka, K.; Fujieda, K.; Kurihara, T.; Arimoto, M.; Mochizuki, S.; Maruhashi, T.; Toshito, T.; Kimura, M.; Inaniwa, T.

    In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 01.01.2018.

    Research output: Contribution to journalArticle

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    title = "Development of novel neutron camera to estimate secondary particle dose for safe proton therapy",
    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.",
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    author = "L. Tagawa and Jun Kataoka and K. Sueoka and K. Fujieda and T. Kurihara and M. Arimoto and S. Mochizuki and T. Maruhashi and T. Toshito and M. Kimura and T. Inaniwa",
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    AU - Tagawa, L.

    AU - Kataoka, Jun

    AU - Sueoka, K.

    AU - Fujieda, K.

    AU - Kurihara, T.

    AU - Arimoto, M.

    AU - Mochizuki, S.

    AU - Maruhashi, T.

    AU - Toshito, T.

    AU - Kimura, M.

    AU - Inaniwa, T.

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    AB - 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.

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    KW - Fast neutron

    KW - Proton therapy

    KW - Pulse shape discrimination

    KW - Time of flight

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