Development of a high resolution gamma camera system using finely grooved GAGG scintillator

Seiichi Yamamoto, Jun Kataoka, Tsubasa Oshima, Yoshimune Ogata, Tadashi Watabe, Hayato Ikeda, Yasukazu Kanai, Jun Hatazawa

    Research output: Contribution to journalArticle

    11 Citations (Scopus)

    Abstract

    High resolution gamma cameras require small pixel scintillator blocks with high light output. However, manufacturing a small pixel scintillator block is difficult when the pixel size becomes small. To solve this limitation, we developed a high resolution gamma camera system using a finely grooved Ce-doped Gd3Al2Ga3O12 (GAGG) plate. Our gamma camera's detector consists of a 1-mm-thick finely grooved GAGG plate that is optically coupled to a 1-in. position sensitive photomultiplier tube (PSPMT). The grooved GAGG plate has 0.2×0.2 mm pixels with 0.05-mm wide slits (between the pixels) that were manufactured using a dicing saw. We used a Hamamatsu PSPMT with a 1-in. square high quantum efficiency (HQE) PSPMT (R8900-100-C12). The energy resolution for the Co-57 gamma photons (122 keV) was 18.5% FWHM. The intrinsic spatial resolution was estimated to be 0.7-mm FWHM. With a 0.5-mm diameter pinhole collimator mounted to its front, we achieved a high resolution, small field-of-view gamma camera. The system spatial resolution for the Co-57 gamma photons was 1.0-mm FWHM, and the sensitivity was 0.0025%, 10 mm from the collimator surface. The Tc-99m HMDP administered mouse images showed the fine structures of the mouse body's parts. Our developed high resolution small pixel GAGG gamma camera is promising for such small animal imaging.

    Original languageEnglish
    Pages (from-to)28-33
    Number of pages6
    JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
    Volume821
    DOIs
    Publication statusPublished - 2016 Jun 11

    Fingerprint

    Phosphors
    scintillation counters
    Pixels
    Cameras
    pixels
    cameras
    high resolution
    Photomultipliers
    photomultiplier tubes
    Full width at half maximum
    collimators
    mice
    Photons
    spatial resolution
    photons
    pinholes
    Quantum efficiency
    field of view
    slits
    animals

    Keywords

    • GAGG
    • Gamma camera
    • Grooved
    • High resolution
    • PSPMT

    ASJC Scopus subject areas

    • Instrumentation
    • Nuclear and High Energy Physics

    Cite this

    Development of a high resolution gamma camera system using finely grooved GAGG scintillator. / Yamamoto, Seiichi; Kataoka, Jun; Oshima, Tsubasa; Ogata, Yoshimune; Watabe, Tadashi; Ikeda, Hayato; Kanai, Yasukazu; Hatazawa, Jun.

    In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 821, 11.06.2016, p. 28-33.

    Research output: Contribution to journalArticle

    Yamamoto, Seiichi ; Kataoka, Jun ; Oshima, Tsubasa ; Ogata, Yoshimune ; Watabe, Tadashi ; Ikeda, Hayato ; Kanai, Yasukazu ; Hatazawa, Jun. / Development of a high resolution gamma camera system using finely grooved GAGG scintillator. In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2016 ; Vol. 821. pp. 28-33.
    @article{b6bf55aee9084b95b687a652fe8274dd,
    title = "Development of a high resolution gamma camera system using finely grooved GAGG scintillator",
    abstract = "High resolution gamma cameras require small pixel scintillator blocks with high light output. However, manufacturing a small pixel scintillator block is difficult when the pixel size becomes small. To solve this limitation, we developed a high resolution gamma camera system using a finely grooved Ce-doped Gd3Al2Ga3O12 (GAGG) plate. Our gamma camera's detector consists of a 1-mm-thick finely grooved GAGG plate that is optically coupled to a 1-in. position sensitive photomultiplier tube (PSPMT). The grooved GAGG plate has 0.2×0.2 mm pixels with 0.05-mm wide slits (between the pixels) that were manufactured using a dicing saw. We used a Hamamatsu PSPMT with a 1-in. square high quantum efficiency (HQE) PSPMT (R8900-100-C12). The energy resolution for the Co-57 gamma photons (122 keV) was 18.5{\%} FWHM. The intrinsic spatial resolution was estimated to be 0.7-mm FWHM. With a 0.5-mm diameter pinhole collimator mounted to its front, we achieved a high resolution, small field-of-view gamma camera. The system spatial resolution for the Co-57 gamma photons was 1.0-mm FWHM, and the sensitivity was 0.0025{\%}, 10 mm from the collimator surface. The Tc-99m HMDP administered mouse images showed the fine structures of the mouse body's parts. Our developed high resolution small pixel GAGG gamma camera is promising for such small animal imaging.",
    keywords = "GAGG, Gamma camera, Grooved, High resolution, PSPMT",
    author = "Seiichi Yamamoto and Jun Kataoka and Tsubasa Oshima and Yoshimune Ogata and Tadashi Watabe and Hayato Ikeda and Yasukazu Kanai and Jun Hatazawa",
    year = "2016",
    month = "6",
    day = "11",
    doi = "10.1016/j.nima.2016.03.060",
    language = "English",
    volume = "821",
    pages = "28--33",
    journal = "Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment",
    issn = "0168-9002",
    publisher = "Elsevier",

    }

    TY - JOUR

    T1 - Development of a high resolution gamma camera system using finely grooved GAGG scintillator

    AU - Yamamoto, Seiichi

    AU - Kataoka, Jun

    AU - Oshima, Tsubasa

    AU - Ogata, Yoshimune

    AU - Watabe, Tadashi

    AU - Ikeda, Hayato

    AU - Kanai, Yasukazu

    AU - Hatazawa, Jun

    PY - 2016/6/11

    Y1 - 2016/6/11

    N2 - High resolution gamma cameras require small pixel scintillator blocks with high light output. However, manufacturing a small pixel scintillator block is difficult when the pixel size becomes small. To solve this limitation, we developed a high resolution gamma camera system using a finely grooved Ce-doped Gd3Al2Ga3O12 (GAGG) plate. Our gamma camera's detector consists of a 1-mm-thick finely grooved GAGG plate that is optically coupled to a 1-in. position sensitive photomultiplier tube (PSPMT). The grooved GAGG plate has 0.2×0.2 mm pixels with 0.05-mm wide slits (between the pixels) that were manufactured using a dicing saw. We used a Hamamatsu PSPMT with a 1-in. square high quantum efficiency (HQE) PSPMT (R8900-100-C12). The energy resolution for the Co-57 gamma photons (122 keV) was 18.5% FWHM. The intrinsic spatial resolution was estimated to be 0.7-mm FWHM. With a 0.5-mm diameter pinhole collimator mounted to its front, we achieved a high resolution, small field-of-view gamma camera. The system spatial resolution for the Co-57 gamma photons was 1.0-mm FWHM, and the sensitivity was 0.0025%, 10 mm from the collimator surface. The Tc-99m HMDP administered mouse images showed the fine structures of the mouse body's parts. Our developed high resolution small pixel GAGG gamma camera is promising for such small animal imaging.

    AB - High resolution gamma cameras require small pixel scintillator blocks with high light output. However, manufacturing a small pixel scintillator block is difficult when the pixel size becomes small. To solve this limitation, we developed a high resolution gamma camera system using a finely grooved Ce-doped Gd3Al2Ga3O12 (GAGG) plate. Our gamma camera's detector consists of a 1-mm-thick finely grooved GAGG plate that is optically coupled to a 1-in. position sensitive photomultiplier tube (PSPMT). The grooved GAGG plate has 0.2×0.2 mm pixels with 0.05-mm wide slits (between the pixels) that were manufactured using a dicing saw. We used a Hamamatsu PSPMT with a 1-in. square high quantum efficiency (HQE) PSPMT (R8900-100-C12). The energy resolution for the Co-57 gamma photons (122 keV) was 18.5% FWHM. The intrinsic spatial resolution was estimated to be 0.7-mm FWHM. With a 0.5-mm diameter pinhole collimator mounted to its front, we achieved a high resolution, small field-of-view gamma camera. The system spatial resolution for the Co-57 gamma photons was 1.0-mm FWHM, and the sensitivity was 0.0025%, 10 mm from the collimator surface. The Tc-99m HMDP administered mouse images showed the fine structures of the mouse body's parts. Our developed high resolution small pixel GAGG gamma camera is promising for such small animal imaging.

    KW - GAGG

    KW - Gamma camera

    KW - Grooved

    KW - High resolution

    KW - PSPMT

    UR - http://www.scopus.com/inward/record.url?scp=84961773440&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=84961773440&partnerID=8YFLogxK

    U2 - 10.1016/j.nima.2016.03.060

    DO - 10.1016/j.nima.2016.03.060

    M3 - Article

    VL - 821

    SP - 28

    EP - 33

    JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

    JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

    SN - 0168-9002

    ER -