Development of a MPPC-based prototype gantry for future MRI-PET scanners

Y. Kurei, Jun Kataoka, T. Kato, T. Fujita, T. Ohshima, T. Taya, S. Yamamoto

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    We have developed a high spatial resolution, compact Positron Emission Tomography (PET) module designed for small animals and intended for use in magnetic resonance imaging (MRI) systems. This module consists of large-area, 4×4 ch MPPC arrays (S11830-3344MF; Hamamatsu Photonics K.K.) optically coupled with Ce-doped (Lu,Y)2(SiO4)O (Ce:LYSO) scintillators fabricated into 16 × 16 matrices of 0.5 ×0.5 mm2 pixels. We set the temperature sensor (LM73CIMK-0; National Semiconductor Corp.) at the rear of the MPPC acceptance surface, and apply optimum voltage to maintain the gain. The eight MPPC-based PET modules and coincidence circuits were assembled into a gantry arranged in a ring 90 mm in diameter to form the MPPC-based PET system. We have developed two types PET gantry: one made of non-magnetic metal and the other made of acrylonitrile butadiene styrene (ABS) resins. The PET gantry was 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 the interference between the MPPC-based PET and MRI. The spatial resolution of PET imaging in a transaxial plane of about 1 mm (FWHM) was achieved in all cases. Operating with PET made of ABS has no effect on MR images, while operating with PET made of non-magnetic metal has a significant detrimental effect on MR images. This paper describes our quantitative evaluations of PET images and MR images, and presents a more advanced version of the gantry for future MRI/DOI-PET systems.

    Original languageEnglish
    Article numberC12052
    JournalJournal of Instrumentation
    Volume9
    Issue number12
    DOIs
    Publication statusPublished - 2014 Dec 23

    Fingerprint

    Positron Emission Tomography
    gantry cranes
    Positron emission tomography
    Magnetic Resonance Imaging
    Magnetic resonance
    Scanner
    scanners
    magnetic resonance
    positrons
    tomography
    prototypes
    Prototype
    Imaging techniques
    acrylonitriles
    modules
    butadiene
    styrenes
    Imaging System
    Spatial Resolution
    Imaging systems

    Keywords

    • Gamma camera, SPECT, PET PET/CT, coronary CT angiography (CTA)
    • Photon detectors for UV, visible and IR photons (solid-state) (PIN diodes, APDs, Si-PMTs, G-APDs, CCDs, EBCCDs, EMCCDs etc)

    ASJC Scopus subject areas

    • Instrumentation
    • Mathematical Physics

    Cite this

    Development of a MPPC-based prototype gantry for future MRI-PET scanners. / Kurei, Y.; Kataoka, Jun; Kato, T.; Fujita, T.; Ohshima, T.; Taya, T.; Yamamoto, S.

    In: Journal of Instrumentation, Vol. 9, No. 12, C12052, 23.12.2014.

    Research output: Contribution to journalArticle

    Kurei, Y. ; Kataoka, Jun ; Kato, T. ; Fujita, T. ; Ohshima, T. ; Taya, T. ; Yamamoto, S. / Development of a MPPC-based prototype gantry for future MRI-PET scanners. In: Journal of Instrumentation. 2014 ; Vol. 9, No. 12.
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