Influence of sensor arrangements and scintillator crystal properties on the 3D precision of monolithic scintillation detectors in PET

Peter Ojala, Abdelkader Bousselham, Lars Eriksson, Anders Brahme, Christian Bohm

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

3 Citations (Scopus)

Abstract

This paper reports the characterization and comparison of different sensor configurations for monolithic scintillation crystals via the calculation of a figure of a merit based on statistical (Fischer) information. The optimal precision of maximum likelihood determinations of interaction positions, i.e. where annihilation photons are absorbed in a monolithic (LSO) crystal, is approximated throughout a crystal block via Fischer information (related to the width of the maximum likelihood distribution) evaluated at a grid of points. Realistic positions and thus realistic distributions of points of interaction are estimated by applying a maximum likelihood algorithm to Monte Carlo data. The algorithm was based on pattern recognition using a Monte Carlo generated lookup table and the least square method. The precision of this method is compared with the optimal (Cramer-Rao) limit for selected points.

Original languageEnglish
Title of host publicationIEEE Nuclear Science Symposium Conference Record
Pages3018-3021
Number of pages4
Volume5
DOIs
Publication statusPublished - 1 Dec 2005
Externally publishedYes
EventNuclear Science Symposium Conference Record, 2005 IEEE - , Puerto Rico
Duration: 23 Oct 200529 Oct 2005

Other

OtherNuclear Science Symposium Conference Record, 2005 IEEE
CountryPuerto Rico
Period23/10/0529/10/05

    Fingerprint

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Industrial and Manufacturing Engineering

Cite this

Ojala, P., Bousselham, A., Eriksson, L., Brahme, A., & Bohm, C. (2005). Influence of sensor arrangements and scintillator crystal properties on the 3D precision of monolithic scintillation detectors in PET. In IEEE Nuclear Science Symposium Conference Record (Vol. 5, pp. 3018-3021). [1596966] https://doi.org/10.1109/NSSMIC.2005.1596966