Optimal and sub-optimal post-detection timing estimators for PET
- Michigan Univ., Ann Arbor, MI (USA). Dept. of Electrical Engineering and Computer Science
- Michigan Univ., Ann Arbor, MI (USA). Div. of Nuclear Medicine
In this paper the authors derive linear and non-linear approximations to the post-detection likelihood function for scintillator interaction time in nuclear particle detection systems. The likelihood function is the optimal statistic for performing detection and estimation of scintillator events and event times. The authors derive the likelihood function approximations from a statistical model for the post-detection waveform which is common in the optical communications literature and takes account of finite detector bandwidth, random gains, and thermal noise. They then present preliminary simulation results for the associated approximate maximum likelihood timing estimators which indicate that significant MSE improvements may be achieved for low post-detection signal-to-noise ratio.
- OSTI ID:
- 6607422
- Report Number(s):
- CONF-900143-; CODEN: IETNA; TRN: 90-031666
- Journal Information:
- IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (USA), Vol. 37:2; Conference: Institute for Electronic and Electrical Engineers (IEEE) nuclear science symposium, San Francisco, CA (USA), 15-19 Jan 1990; ISSN 0018-9499
- Country of Publication:
- United States
- Language:
- English
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IMAGE SCANNERS
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POSITRON COMPUTED TOMOGRAPHY
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NONLINEAR PROBLEMS
SIGNAL-TO-NOISE RATIO
COMPUTERIZED TOMOGRAPHY
DIAGNOSTIC TECHNIQUES
EMISSION COMPUTED TOMOGRAPHY
NUMERICAL SOLUTION
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