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A novel energy mapping approach for CT-based attenuation correction in PET.

Teimourian, B
Zafarghandi, M Shamsaie
Ghafarian, P
Ghadiri, H
Published in Medical Physics. 2012, vol. 39, no. 4, p. 2078-89
Abstract Dual-energy CT (DECT) is arguably the most accurate energy mapping technique in CT-based attenuation correction (CTAC) implemented on hybrid PET/CT systems. However, this approach is not attractive for clinical use owing to increased patient dose. The authors propose a novel energy mapping approach referred to as virtual DECT (VDECT) taking advantage of the DECT formulation but using CT data acquired at a single energy (kV(P)). For this purpose, the CT image acquired at one energy is used to generate the CT image at a second energy using calculated kV(P) conversion curves derived from phantom studies.
Keywords AlgorithmsArtifactsHumansImage Enhancement/methodsImage Interpretation, Computer-Assisted/methodsLung/anatomy & histology/radiographyPhantoms, ImagingPositron-Emission Tomography/methodsReproducibility of ResultsSensitivity and SpecificitySubtraction TechniqueTomography, X-Ray Computed/methods
PMID: 22482629
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Article (Published version) (1.8 MB) - public document Free access
Research group Imagerie Médicale (TEP et TEMP) (542)
Project FNS: 31003A-135576
(ISO format)
TEIMOURIAN, B et al. A novel energy mapping approach for CT-based attenuation correction in PET. In: Medical Physics, 2012, vol. 39, n° 4, p. 2078-89. https://archive-ouverte.unige.ch/unige:30802

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Deposited on : 2013-10-29

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