Deconvolution scatter compensation for thallium-201 fan-beam cardiac SPECT

Jia Li, Benjamin M.W. Tsui, Eric C. Frey, Grant T. Gullberg

Research output: Contribution to conferencePaperpeer-review

Abstract

Scatter radiation is a large fraction of the measured projection data in Tl-201 SPECT and has significant effect on the reconstructed images. We investigated both pre- and post-filter implementations of the deconvolution scatter compensation method and several methods of estimating the scatter-to-primary ratio and scatter point response function using the attenuation map. For comparison, we also extended the dual energy window scatter compensation with a method to accurately estimate the k factor used. Both scatter compensation methods were assessed using a thorax phantom and Monte Carlo simulations. Quantitative accuracy of higher than 90% is achieved for both the prefilter implementation of the deconvolution method and the dual energy window method with an accurately determined k factor. Among the two, the deconvolution method has slightly less noise in the reconstructed image.

Original languageEnglish (US)
Pages1175-1179
Number of pages5
StatePublished - 1995
Externally publishedYes
EventProceedings of the 1995 IEEE Nuclear Science Symposium and Medical Imaging Conference. Part 1 (of 3) - San Francisco, CA, USA
Duration: Oct 21 1995Oct 28 1995

Other

OtherProceedings of the 1995 IEEE Nuclear Science Symposium and Medical Imaging Conference. Part 1 (of 3)
CitySan Francisco, CA, USA
Period10/21/9510/28/95

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging

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