Interactions of collimation, sampling and filtering on spect spatial resolution

Benjamin M.W. Tsui

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


The major factors which affect the spatial resolution of single-photon emission computer tomography (SPECT) include collimation, sampling and filtering. A theoretical formulation is presented to describe the relationship between these factors and their effects on the projection data. Numerical calculations were made using commercially available SPECT systems and imaging parameters. The results provide an important guide for proper selection of the collimator-detector design, the imaging and the reconstruction parameters to avoid unnecessary spatial resolution degradation and aliasing artifacts in the reconstructed image. In addition, the understanding will help in the fair evaluation of different SPECT systems under specific imaging conditions.

Original languageEnglish (US)
Pages (from-to)527-532
Number of pages6
JournalIEEE Transactions on Nuclear Science
Issue number1
StatePublished - Feb 1984
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Electrical and Electronic Engineering


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