Qualification test of a MPPC-based PET module for future MRI-PET scanners

Y. Kurei, Jun Kataoka, T. Kato, T. Fujita, H. Funamoto, T. Tsujikawa, S. Yamamoto

    Research output: Contribution to journalArticle

    2 Citations (Scopus)

    Abstract

    We have developed a high-resolution, compact Positron Emission Tomography (PET) module for future use in MRI-PET scanners. The module consists of large-area, 4×4 ch MPPC arrays (Hamamatsu S11827-3344MG) optically coupled with Ce:LYSO scintillators fabricated into 12×12 matrices of 1×1 mm2 pixels. At this stage, a pair of module and coincidence circuits was assembled into an experimental prototype gantry arranged in a ring of 90 mm in diameter to form the MPPC-based PET system. The PET detector ring was then positioned around the RF coil of the 4.7 T MRI system. We took an image of a point 22Na source under fast spin echo (FSE) and gradient echo (GE), in order to measure interference between the MPPC-based PET and the MRI. We only found a slight degradation in the spatial resolution of the PET image from 1.63 to 1.70 mm (FWHM; x-direction), or 1.48-1.55 mm (FWHM; y-direction) when operating with the MRI, while the signal-to-noise ratio (SNR) of the MRI image was only degraded by 5%. These results encouraged us to develop a more advanced version of the MRI-PET gantry with eight MPPC-based PET modules, whose detailed design and first qualification test are also presented in this paper.

    Original languageEnglish
    Pages (from-to)275-279
    Number of pages5
    JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
    Volume765
    DOIs
    Publication statusPublished - 2014 Nov 21

    Fingerprint

    Positron emission tomography
    qualifications
    Magnetic resonance imaging
    scanners
    positrons
    tomography
    modules
    gantry cranes
    Full width at half maximum
    echoes
    Coincidence circuits
    coincidence circuits
    rings
    Phosphors
    point sources
    scintillation counters
    Signal to noise ratio
    signal to noise ratios
    coils
    spatial resolution

    Keywords

    • Magnetic Resonance Imaging (MRI)
    • Multi-Pixel Photon Counter (MPPC)
    • Positron Emission Tomography (PET)

    ASJC Scopus subject areas

    • Instrumentation
    • Nuclear and High Energy Physics

    Cite this

    Qualification test of a MPPC-based PET module for future MRI-PET scanners. / Kurei, Y.; Kataoka, Jun; Kato, T.; Fujita, T.; Funamoto, H.; Tsujikawa, T.; Yamamoto, S.

    In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 765, 21.11.2014, p. 275-279.

    Research output: Contribution to journalArticle

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