A high efficiency pixelated detector for small animal PET

Vivek V. Nagarkar, Sameer V. Tipnis, Kanai Shah, Irina Shestakova, Simon R Cherry

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


We report on the development of a new high efficiency detector for small animal PET. The detector is based on a monolithic block of LSO pixelated using laser ablation technique. The laser processing allows pixelation with very narrow, 70 μm wide, inter-pixel gaps resulting in a substantially enhanced sensitivity when the detectors are operated in coincidence mode. This paper presents the first results of a detector module fabricated using this approach. Preliminary imaging data at 511 keV obtained by coupling the pixelated LSO to a position sensitive photomultiplier tube (PSPMT) and a position sensitive avalanche photodiode (PSAPD) are presented.

Original languageEnglish (US)
Pages (from-to)801-804
Number of pages4
JournalIEEE Transactions on Nuclear Science
Issue number3 II
StatePublished - Jun 2004


  • Lutetium oxyorthosilicate (ISO)
  • Positron emission tomography (PET)
  • Scintillators
  • Small animal imaging

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Nuclear Energy and Engineering


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