Effects of Distorted PET Projection Data on the Reconstructed Image Using Different Reconstruction Algorithms View Full Text


Ontology type: schema:Chapter     


Chapter Info

DATE

1995

AUTHORS

Josef Doll , Hermann J. Ostertag , Matthias E. Bellemann , Peter Schmidlin , Wolfgang K. Kübler , Ludwig G. Strauss , Walter J. Lorenz

ABSTRACT

In a simulation study, the effects of multiplicative and additive distortions of the projection data on the reconstructed image quality and quantitation capability were investigated. Three different reconstruction algorithms were compared: (i) filtered back-projection (FBP), (ii) an iterative method with multiplicative correction term (ML-EM), and (iii) an iterative method with additive correction term (AR-AC). Distortions were uniformly applied to all projections with projection angles ranging from 72° through 108°. Multiplicative distortion factors ranged from 0.5 to 1.4, additive distortions were −30% to +30%. The reconstructed images and activity concentrations were not affected by the multiplicative distortions if ML-EM was applied, whereas additive distortions were best tolerated when FBP or AR-AC were used for image reconstruction. More... »

PAGES

85-90

Book

TITLE

Radioactive Isotopes in Clinical Medicine and Research

ISBN

978-3-0348-7342-0
978-3-0348-7340-6

Author Affiliations

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/978-3-0348-7340-6_13

DOI

http://dx.doi.org/10.1007/978-3-0348-7340-6_13

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1008045792


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