Development of high-precision color gamma-ray image sensor based on TSV-MPPC and diced scintillator arrays

Tsubasa Oshima; Jun Kataoka; Aya Kishimoto; Takuya Fujita; Yota Kurei; Toru Nishiyama; Seiichi Yamamoto; Koichi Ogawa

doi:10.1109/NSSMIC.2015.7582079

Development of high-precision color gamma-ray image sensor based on TSV-MPPC and diced scintillator arrays

Tsubasa Oshima, Jun Kataoka, Aya Kishimoto, Takuya Fujita, Yota Kurei, Toru Nishiyama, Seiichi Yamamoto, Koichi Ogawa

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

We developed a high-precision color gamma-ray image sensor with fine spatial resolution that is cost-effective, widely applicable, and very sensitive by using a diced cerium-doped Gd₃Al₂ Ga₃O₁₂ (Ce:GAGG) scintillator array coupled with a 3.0 × 3.0 mm²/pixel 8 × 8 MPPC-array. The proposed image sensor can measure the energy of individual X-ray photons transmitted through an object. The pixel size of the Ce:GAGG scintillator array is 0.2 mm, and the pixels are separated by 50-μm-wide micro-grooves. The image sensor has a size of 20 × 20 mm² and thickness of 1.0 mm, and it achieved an excellent spatial resolution of 0.3-0.4 mm and energy resolutions of 12% and 18% (FWHM) for 122 and 59.5 keV gamma-rays, respectively. We conducted an experiment to determine the local effective atomic number of metals by using dual-energy gamma-ray sources. In addition, we developed a color-composite image using mixed images taken at three energies (31, 59.5, and 88 keV).

Original language	English
Title of host publication	2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781467398626
DOIs	https://doi.org/10.1109/NSSMIC.2015.7582079
Publication status	Published - 2016 Oct 3
Event	2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015 - San Diego, United States Duration: 2015 Oct 31 → 2015 Nov 7

Other

Other	2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015
Country/Territory	United States
City	San Diego
Period	15/10/31 → 15/11/7

Keywords

Ce
FPD
GAGG
MPPC

ASJC Scopus subject areas

Nuclear and High Energy Physics
Radiology Nuclear Medicine and imaging
Instrumentation

Access to Document

10.1109/NSSMIC.2015.7582079

Cite this

Oshima, T., Kataoka, J., Kishimoto, A., Fujita, T., Kurei, Y., Nishiyama, T., Yamamoto, S., & Ogawa, K. (2016). Development of high-precision color gamma-ray image sensor based on TSV-MPPC and diced scintillator arrays. In 2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015 Article 7582079 Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/NSSMIC.2015.7582079

Development of high-precision color gamma-ray image sensor based on TSV-MPPC and diced scintillator arrays. / Oshima, Tsubasa; Kataoka, Jun; Kishimoto, Aya et al.
2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015. Institute of Electrical and Electronics Engineers Inc., 2016. 7582079.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Oshima, T, Kataoka, J, Kishimoto, A, Fujita, T, Kurei, Y, Nishiyama, T, Yamamoto, S & Ogawa, K 2016, Development of high-precision color gamma-ray image sensor based on TSV-MPPC and diced scintillator arrays. in 2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015., 7582079, Institute of Electrical and Electronics Engineers Inc., 2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015, San Diego, United States, 15/10/31. https://doi.org/10.1109/NSSMIC.2015.7582079

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abstract = "We developed a high-precision color gamma-ray image sensor with fine spatial resolution that is cost-effective, widely applicable, and very sensitive by using a diced cerium-doped Gd3Al2 Ga3O12 (Ce:GAGG) scintillator array coupled with a 3.0 × 3.0 mm2/pixel 8 × 8 MPPC-array. The proposed image sensor can measure the energy of individual X-ray photons transmitted through an object. The pixel size of the Ce:GAGG scintillator array is 0.2 mm, and the pixels are separated by 50-μm-wide micro-grooves. The image sensor has a size of 20 × 20 mm2 and thickness of 1.0 mm, and it achieved an excellent spatial resolution of 0.3-0.4 mm and energy resolutions of 12% and 18% (FWHM) for 122 and 59.5 keV gamma-rays, respectively. We conducted an experiment to determine the local effective atomic number of metals by using dual-energy gamma-ray sources. In addition, we developed a color-composite image using mixed images taken at three energies (31, 59.5, and 88 keV).",

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AU - Kurei, Yota

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AB - We developed a high-precision color gamma-ray image sensor with fine spatial resolution that is cost-effective, widely applicable, and very sensitive by using a diced cerium-doped Gd3Al2 Ga3O12 (Ce:GAGG) scintillator array coupled with a 3.0 × 3.0 mm2/pixel 8 × 8 MPPC-array. The proposed image sensor can measure the energy of individual X-ray photons transmitted through an object. The pixel size of the Ce:GAGG scintillator array is 0.2 mm, and the pixels are separated by 50-μm-wide micro-grooves. The image sensor has a size of 20 × 20 mm2 and thickness of 1.0 mm, and it achieved an excellent spatial resolution of 0.3-0.4 mm and energy resolutions of 12% and 18% (FWHM) for 122 and 59.5 keV gamma-rays, respectively. We conducted an experiment to determine the local effective atomic number of metals by using dual-energy gamma-ray sources. In addition, we developed a color-composite image using mixed images taken at three energies (31, 59.5, and 88 keV).

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Development of high-precision color gamma-ray image sensor based on TSV-MPPC and diced scintillator arrays

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Keywords

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