ARMAX-RLS Parameter-Estimation Crystal Identification in Phoswich PET Detectors

  title={ARMAX-RLS Parameter-Estimation Crystal Identification in Phoswich PET Detectors},
  author={J.-B. Michaud and Catherine M. Pepin and Roger Lecomte and R{\'e}jean Fontaine},
  journal={IEEE Transactions on Nuclear Science},
Some Positron Emission Tomography (PET) scanners achieve improved resolution or Depth-Of-Interaction (DOI) measurement using avalanche photodiode-based phoswich detectors, with different challenges (noise limitation) than traditional photomultiplier tubes (space limitation). DOI measurement is necessary in small-animal PET for parallax mitigation, while side-by-side phoswich detectors improve resolution without an equal increase in electronics complexity. Future improvements in scanner… 
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