Possibility analysis of a GSO PET/SPECT detector

Seiichi Yamamoto*


研究成果: Paper査読


Light output of GSO is about twice of that of BGO. In addition, GSO does not contain any natural radioisotope. Thus, GSO may be a possible material for a detector that can be used for annihilation photons (511keV gamma photons) and gamma photons for SPECT. In addition, it may be able to be used for a block detector for PET/SPECT system such as hybrid gamma camera. For this purpose, I measured the energy response of GSO for gamma photons for PET (511keV) and SPECT (122keV). We also fabricated GSO block detector and measured the position response. The energy resolution were 9.9% FWHM and 19.5% FWHM for 511keV and 122keV gamma photons, respectively. Though the GSO block of 8 × 8 matrix was perfectly resolved in 2 dimensional distributions for 511keV gamma photons, the block was not resolved for 122keV gamma photons. The GSO block of 6 × 6 was almost resolved for 122keV gamma photons. These results indicated that GSO is suitable for PET/SPECT detectors for a non-imaging radiation detector if the energy resolution of around 20% FWHM is accepted for SPECT application. For the PET/SPECT block detector application, the block was limited in 6 × 6 matrix that may limit the cost effectiveness of The system. Thus, it is suggested that GSO block detector is suitable for PET only application.

出版ステータスPublished - 2000
イベント2000 IEEE Nuclear Science Symposium Conference Record - Lyon, France
継続期間: 2000 10月 152000 10月 20


Conference2000 IEEE Nuclear Science Symposium Conference Record

ASJC Scopus subject areas

  • 放射線
  • 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


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