IMPLEMENTATION OF SIMULTANEOUS ATTENUATION AND DETECTOR RESPONSE CORRECTION IN SPECT.

Benjamin Tsui, Hong Bin Hu, David R. Gilland

Research output: Contribution to journalArticle

Abstract

Simultaneous correction of nonuniform attenuation and detector response was implemented in single-photon-emission computed tomography (SPECT) image reconstruction. A ray-driven projector-backprojector that exactly models attenuation in the reconstructed image slice and the spatially variant detector response was developed and used in the iterative maximum-likelihood algorithm for the correction. A computer-generated heart-lung phantom was used in simulation studies to compare the simultaneous correction method with an intrinsic attenuation correction method using a smoothing filter, and intrinsic attenuation correction method using a deconvolution filter, and a modified Chang attenuation correction method using a nonuniform attenuation distribution. The results demonstrate that the present method provides more-accurate quantitation and superior image quality.

Original languageEnglish (US)
JournalIEEE Transactions on Nuclear Science
Volume35
Issue number1
DOIs
StatePublished - Feb 1987
Externally publishedYes

Fingerprint

Single photon emission computed tomography
tomography
attenuation
Detectors
detectors
photons
Deconvolution
Image reconstruction
Image quality
Maximum likelihood
filters
projectors
image reconstruction
smoothing
lungs
rays

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Nuclear Energy and Engineering

Cite this

IMPLEMENTATION OF SIMULTANEOUS ATTENUATION AND DETECTOR RESPONSE CORRECTION IN SPECT. / Tsui, Benjamin; Hu, Hong Bin; Gilland, David R.

In: IEEE Transactions on Nuclear Science, Vol. 35, No. 1, 02.1987.

Research output: Contribution to journalArticle

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