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Communication
A Wiener filter based crystal identification (CI) algorithm achieving excellent discrimination accuracy (~98%) was recently proposed for identifying LYSO and LGSO crystals in phoswich detectors coupled to an Avalanche Photodiode. Such detectors are used in the LabPET™, an all-digital positron emission tomography (PET) scanner for small animal imaging recently developed in Sherbrooke. This algorithm was based on evaluating the scintillation decay constant and gain (a1 and b0 parameters, respectively) of events sampled at 45 MSPS and discriminating crystals by thresholding the a1 spectra. The input gain was not considered in the CI process even if it must be computed. We …
