Title: Iterative reconstruction for helical CT: a simulation study
Authors: Nuyts, Johan ×
De Man, Bruno
Dupont, Patrick
Defrise, M
Suetens, Paul
Mortelmans, Luc #
Issue Date: Apr-1998
Series Title: Physics in medicine and biology vol:43 issue:4 pages:729-737
Abstract: Iterative reconstruction algorithms for helical CT are presented. The algorithms are derived from two-dimensional reconstruction algorithms, by adapting the projector/backprojector to the helical orbit of the source, and by constraining the axial frequencies with a Gaussian sieve. Simulations have been carried out and the performance of the iterative algorithms is compared to that of filtered backprojection of synthetic (interpolated) two-dimensional sinograms. The iterative algorithms produce superior bias-noise curves. Axial resolution is superior, but disturbing edge-artefacts are introduced.
ISSN: 0031-9155
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Nuclear Medicine & Molecular Imaging
Electrical Engineering - miscellaneous
ESAT - PSI, Processing Speech and Images
Research Group Experimental Neurology
Laboratory for Cognitive Neurology
× corresponding author
# (joint) last author

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