Impact of fano factor on position and energy estimation in scintillation detectors

Vaibhav Bora, Harrison H Barrett, Abhinav K. Jha, Eric W Clarkson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The Fano factor for an integer-valued random variable is defined as the ratio of its variance to its mean. Light from various scintillation crystals has been reported to have Fano factors from sub-Poisson (Fano factor < 1), Poisson (Fano factor = 1) to super-Poisson (Fano factor > 1). For a given mean, a smaller Fano factor implies a smaller variance and thus less noise. We investigate if lower noise in the scintillation light results in better spatial and energy resolution in a scintillation imaging detector. The impact of Fano factor on estimation of position of interaction and energy deposited in simple gamma-camera geometries is estimated by calculating the Cramér-Rao bound. The calculated Cramér-Rao bound is quantitatively validated by estimating the variance of the maximum likelihood estimator.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume8854
DOIs
StatePublished - 2013
EventPenetrating Radiation Systems and Applications XIV - San Diego, CA, United States
Duration: Aug 28 2013Aug 28 2013

Other

OtherPenetrating Radiation Systems and Applications XIV
CountryUnited States
CitySan Diego, CA
Period8/28/138/28/13

Fingerprint

Scintillation counters
Scintillation
scintillation
Detector
detectors
Energy
Random variables
Maximum likelihood
energy
Cameras
random variables
Detectors
Imaging techniques
Crystals
Geometry
estimators
Maximum Likelihood Estimator
low noise
integers
Siméon Denis Poisson

Keywords

  • Energy Estimation
  • Fano factor
  • Position Estimation
  • Scintillators

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Bora, V., Barrett, H. H., Jha, A. K., & Clarkson, E. W. (2013). Impact of fano factor on position and energy estimation in scintillation detectors. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 8854). [885405] https://doi.org/10.1117/12.2033642

Impact of fano factor on position and energy estimation in scintillation detectors. / Bora, Vaibhav; Barrett, Harrison H; Jha, Abhinav K.; Clarkson, Eric W.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8854 2013. 885405.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Bora, V, Barrett, HH, Jha, AK & Clarkson, EW 2013, Impact of fano factor on position and energy estimation in scintillation detectors. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 8854, 885405, Penetrating Radiation Systems and Applications XIV, San Diego, CA, United States, 8/28/13. https://doi.org/10.1117/12.2033642
Bora V, Barrett HH, Jha AK, Clarkson EW. Impact of fano factor on position and energy estimation in scintillation detectors. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8854. 2013. 885405 https://doi.org/10.1117/12.2033642
Bora, Vaibhav ; Barrett, Harrison H ; Jha, Abhinav K. ; Clarkson, Eric W. / Impact of fano factor on position and energy estimation in scintillation detectors. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8854 2013.
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