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Proceedings Paper

Using correlated CT images in compensation for attenuation in PET (positron emission tomography) image reconstruction
Author(s): Xiaolin Yu; Chin-Tu Chen; R. Bartlett; Charles A. Pelizzari; Caesar Ordonez
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Paper Abstract

Applying structural information from x-ray computed tomograghy (CT) to image reconstruction in positron emission tomography (PET) for compensation of the effect of photon attenuation can provide improved quality of the reconstructed PET images. CT and PET scans can be registered precisely using a surface-matching technique. Anatomical maps are then obtained by reslicing the CT images along the PET image planes. Attenuation coefficient maps for the corresponding PET images can be derived from the anatomical maps by considering the difference in photon energies observed in CT and in PET. These attenuation coefficient maps are reprojected to produce a set of attenuation correction factors for each projection profile. PET images reconstructed using these attenuation correction factors exhibit significant reduction in noise. 1.

Paper Details

Date Published: 1 March 1991
PDF: 3 pages
Proc. SPIE 1396, Applications of Optical Engineering: Proceedings of OE/Midwest '90, (1 March 1991); doi: 10.1117/12.47738
Show Author Affiliations
Xiaolin Yu, Univ. of Chicago (United States)
Chin-Tu Chen, Univ. of Chicago (United States)
R. Bartlett, Univ. of Chicago (United States)
Charles A. Pelizzari, Univ. of Chicago (United States)
Caesar Ordonez, Univ. of Chicago (United States)


Published in SPIE Proceedings Vol. 1396:
Applications of Optical Engineering: Proceedings of OE/Midwest '90
Rudolph P. Guzik; Hans E. Eppinger; Richard E. Gillespie; Mary Kathryn Dubiel; James E. Pearson, Editor(s)

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