Maximum-Likelihood Methods for Processing Signals From Gamma-Ray Detectors.

Maximum-Likelihood Methods for Processing Signals From Gamma-Ray Detectors.
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DOI:
10.1109/tns.2009.2015308
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发表时间:
2009-06-01
影响因子:
1.8
通讯作者:
Furenlid LR
Furenlid LR
中科院分区:
工程技术3区
文献类型:
--
作者:
Barrett HH;Hunter WC;Miller BW;Moore SK;Chen Y;Furenlid LR

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In any gamma-ray detector, each event produces electrical signals on one or more circuit elements. From these signals, we may wish to determine the presence of an interaction; whether multiple interactions occurred; the spatial coordinates in two or three dimensions of at least the primary interaction; or the total energy deposited in that interaction. We may also want to compute listmode probabilities for tomographic reconstruction. Maximum-likelihood methods provide a rigorous and in some senses optimal approach to extracting this information, and the associated Fisher information matrix provides a way of quantifying and optimizing the information conveyed by the detector. This paper will review the principles of likelihood methods as applied to gamma-ray detectors and illustrate their power with recent results from the Center for Gamma-ray Imaging.
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