Investigation of solid-state photomultipliers for positron emission tomography scanners

Jae Sung Lee, Mikiko Ito, Kwang Souk Sim, Byungsik Hong, Kyung Sei Lee, Jamil Muhammad, June Tak Rhee, Geon Song Lee, Kwang Suk Park, In Chan Song, Seong Jong Hong

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


Solid-state devices to detect photons are under active research and development because they, unlike photomultiplier tubes (PMT), can be used under high-magnetic-field and radio-frequency environments, such as in magnetic resonance imaging (MRI) scanners. In addition, some of the solid-state devices have a higher particle detection efficiency and only a slightly less gain than PMTs, currently the first choice to detect photons in positron emission tomography (PET) scanners. We have tested solid-state photomultipliers (SSPM) among several different solid-state devices in the market. This paper describes the test methods and the characteristics of SSPMs with an emphasis on use in PET scanners. We obtained a 25 % energy resolution and a 4.5-ns time resolution with 22Na and lutetium yttrium oxyorthosilicate (LYSO), both full-width at half maximum (FWHM). The number of fired mini-cells and the amplification factor were, respectively, estimated to be 154 ± 37 for 22Na and (3.8 ± 0.9) × 105. Even though SSPM-LYSO couplings resulted in worse performances than PMT-LYSO couplings, the solid-state devices have good potential for use in the PET scanners, especially in combined PET/MRI scanners because the new solid-state devices appear to have better characteristics, such as a higher quantum efficiency and a larger number of mini-cells, than the tested SSPMs.

Original languageEnglish
Pages (from-to)1332-1339
Number of pages8
JournalJournal of the Korean Physical Society
Issue number5
Publication statusPublished - 2007 May


  • Energy resolution
  • LYSO
  • MRI
  • PET
  • Solid-state photomultiplier
  • Time resolution

ASJC Scopus subject areas

  • General Physics and Astronomy


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