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1 March 1991 Using correlated CT images in compensation for attenuation in PET (positron emission tomography) image reconstruction
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Proceedings Volume 1396, Applications of Optical Engineering: Proceedings of OE/Midwest '90; (1991) https://doi.org/10.1117/12.47738
Event: Applications of Optical Engineering: Proceedings of OE/Midwest '90, 1990, Rosemont, IL, United States
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.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Xiaolin Yu, Chin-Tu Chen, R. Bartlett, Charles A. Pelizzari, and Caesar Ordonez "Using correlated CT images in compensation for attenuation in PET (positron emission tomography) image reconstruction", Proc. SPIE 1396, Applications of Optical Engineering: Proceedings of OE/Midwest '90, (1 March 1991); https://doi.org/10.1117/12.47738
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