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Although GAPD has been reported to provide good performance as a PET photosensor, it has significant temperature-dependent gain variations causing the drifting of photo-peaks and hence deteriorating the detection sensitivity. Therefore, it is necessary to develop a realtime photo-peak searching method to ensure to apply proper energy window and to sustain uniform sensitivity. This study presented...
In a PET detector using pixelated scintillator, a 511 keV annihilation photon incident on a pixel might deposit part of its energy and could be almost simultaneously detected in several adjacent pixels. These inter-crystal scattered events are typically considered invalid events in PET if their energies are not within the energy window. The purpose of this study is to develop a new position decoder...
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