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Avalanche photodiodes in scintillation detection for high resolution PET

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5 Author(s)
M. Kapusta ; Soltan Inst. for Nucl. Studies, Swierk-Otwock, Poland ; M. Moszynski ; M. Balcerzyk ; K. Lesniewski
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Several scintillation detectors containing LSO, YAP, and BGO crystals coupled to 5 mm in diameter beveled-edge large area avalanche photodiodes (LAAPD) were studied. These configurations were chosen to address requirements of high-resolution positron emission tomography (PET). The number of electron-hole pairs, the energy resolution for 511 keV γ-rays, detection efficiency, and timing properties were measured in various configurations to establish best operating conditions for these detectors. The obtained results point towards a possibility of replacing photomultiplier tubes (PMT) in PET with LAAPDs, leading potentially to more compact, reliable, and accurate systems

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IEEE Transactions on Nuclear Science  (Volume:47 ,  Issue: 6 )