The effects of incorrect modeling on noise and resolution properties of ML-EM images

D. W. Wilson, H. H. Barrett

Research output: Contribution to conferencePaper

Abstract

The effects of incorrect compensation for collimator blur in single-photon emission computed tomography (SPECT) images are studied in terms of the noise and resolution properties of the reconstructed images. Qualitative analysis of reconstructions of the Hoffman brain phantom show the counterintuitive behavior of longer noise correlations for high-pass filtered images. These qualitative observations are confirmed with more quantitative noise measures. However, the signal-to-noise ratio, in terms of the noise-equivalent quanta, remains largely unchanged. We conclude that the compensation model affects SPECT image properties, though the effect on human task performance remains to be studied.

Original languageEnglish (US)
Pages15/299-15/303
StatePublished - Dec 1 2000
Event2000 IEEE Nuclear Science Symposium Conference Record - Lyon, France
Duration: Oct 15 2000Oct 20 2000

Other

Other2000 IEEE Nuclear Science Symposium Conference Record
CountryFrance
CityLyon
Period10/15/0010/20/00

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Industrial and Manufacturing Engineering

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