Evaluation of the performance limit of MPPC for ToF-PET

Takayuki Tsujikawa, Jun Kataoka, Takahiro Ambe, Takuya Fujita, Yota Kurei, Goro Sato, Hirolazu Ikeda

    研究成果: Conference contribution

    抜粋

    In recent years, multi-pixel photon counters (MPPCs) have been actively studied for use in a module for such next-generation PET systems as MRI-PET, DoI-PET, and ToF-PET scanners. In particular, Time of Flight (ToF) measurement is a challenging approach to identify the position of a γ-ray source, according to differences in the arrival times of annihilation γ rays after positron decay. Several simulations suggest a substantial improvement in the signal-to-noise ratio of PET images when using ToF information. However, ToF-PET performance is determined by the time resolution of a γ-ray sensor (including scintillators, photo-sensors and readout electronics) as a whole, thus making it often difficult to achieve ToF resolution as good as 500 ps (FWHM) in actual PET systems. This paper describes our development of a new method of ToF measurement using MPPC-based scintillation detectors. We showed that our method effectively reduces the contamination of dark noise, and minimizes the effects of time walk and timing jitter. The best ToF resolution of 213 ps (FWHM) was achieved by coupling 3×3×10 mm3 Ce:LYSO crystal with a 3×3 mm2 pixel detector. We conclude by commenting on our ultra-fast ASIC for 16-ch MPPC readout as pertaining to future applications in MPPC-PET scanners with ToF measurement capability.

    元の言語English
    ホスト出版物のタイトル2014 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014
    出版者Institute of Electrical and Electronics Engineers Inc.
    ISBN(電子版)9781479960972
    DOI
    出版物ステータスPublished - 2016 3 10
    イベントIEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014 - Seattle, United States
    継続期間: 2014 11 82014 11 15

    出版物シリーズ

    名前2014 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014

    Other

    OtherIEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014
    United States
    Seattle
    期間14/11/814/11/15

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics
    • Radiology Nuclear Medicine and imaging

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  • これを引用

    Tsujikawa, T., Kataoka, J., Ambe, T., Fujita, T., Kurei, Y., Sato, G., & Ikeda, H. (2016). Evaluation of the performance limit of MPPC for ToF-PET. : 2014 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014 [7430884] (2014 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2014). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/NSSMIC.2014.7430884