Plasma radiometabolite correction in dynamic PET studies: Insights on the available modeling approaches

Author:

Tonietto Matteo1,Rizzo Gaia1,Veronese Mattia2,Fujita Masahiro3,Zoghbi Sami S3,Zanotti-Fregonara Paolo34,Bertoldo Alessandra1

Affiliation:

1. Department of Information Engineering, University of Padova, Padova, Italy

2. Department of Neuroimaging, IoPPN, King’s College London, London, UK

3. Molecular Imaging Branch, National Institute of Mental Health, Bethesda, MD, USA

4. INCIA UMR-CNRS 5287, Université de Bordeaux, Bordeaux, France

Abstract

Full kinetic modeling of dynamic PET images requires the measurement of radioligand concentrations in the arterial plasma. The unchanged parent radioligand must, however, be separated from its radiometabolites by chromatographic methods. Thus, only few samples can usually be analyzed and the resulting measurements are often noisy. Therefore, the measurements must be fitted with a mathematical model. This work presents a comprehensive analysis of the different models proposed in the literature to describe the plasma parent fraction (PPf) and of the alternative approaches for radiometabolite correction. Finally, we used a dataset of [11C]PBR28 brain PET data as a case study to guide the reader through the PPf model selection process.

Publisher

SAGE Publications

Subject

Cardiology and Cardiovascular Medicine,Clinical Neurology,Neurology

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