抄録
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).
本文言語 | English |
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ホスト出版物のタイトル | 2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015 |
出版社 | Institute of Electrical and Electronics Engineers Inc. |
ISBN(電子版) | 9781467398626 |
DOI | |
出版ステータス | Published - 2016 10月 3 |
イベント | 2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015 - San Diego, United States 継続期間: 2015 10月 31 → 2015 11月 7 |
Other
Other | 2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015 |
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国/地域 | United States |
City | San Diego |
Period | 15/10/31 → 15/11/7 |
ASJC Scopus subject areas
- 核物理学および高エネルギー物理学
- 放射線学、核医学およびイメージング
- 器械工学