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Pulse pileup events degrade the signal-to-noise ratio (SNR) of nuclear medicine data. When such events occur in multiplexed detectors, they cause spatial misposition, energy spectrum distortion and degraded timing resolution, which leads to image artifacts. Pulse pileup is pronounced in PETbox4, a bench top PET scanner dedicated to high sensitivity and high resolution imaging of mice. In that system,...
A phoswich depth of interaction (DOI) detector composed by two layers of scintillator arrays (LYSO and BGO) has been proposed. To use this design for building practical systems, a tapered multiple-element glass lightguide is necessary to couple the scintillator arrays to a PSPMT. The complete individual detector module offers an overall dimension of 52×52 mm2 that matches the external dimensions of...
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