Detection Efficiency Modeling and Joint Activity and Attenuation Reconstruction in Non-TOF 3-D PET From Multiple-Energy Window Data

Ludovica Brusaferri,Elise C. Emond,Alexandre Bousse,Robert Twyman,Alexander C. Whitehead,David Atkinson,Sébastien Ourselin,Brian F. Hutton,Simon Arridge,Kris Thielemans

IEEE Transactions on Radiation and Plasma Medical Sciences（2022）

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摘要

Emission-based attenuation correction (AC) methods offer the possibility of overcoming quantification errors induced by conventional MR-based approaches in PET and Magnetic Resonance (MR) (PET/MR) imaging. However, the joint problem of determining AC and the activity of interest is strongly ill-posed in non-time-of-flight (TOF) PET. This can be improved by exploiting the extra information arising ...

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关键词

Positron emission tomography,Attenuation,Detectors,Biomedical imaging,Image reconstruction,Monte Carlo methods,Imaging

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