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PET Quantification in Neuropsychiatry

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PET and SPECT in Psychiatry

Abstract

PET quantification in neuropsychiatry focuses on the quantification of dynamic brain PET data. Starting from the basics of dynamic PET imaging, different methodologies are presented to extract time-dependent activity concentration for specific brain regions, both manually and automatically. The latter methodology uses predefined VOI templates and has the advantage of being operator independent. Once time-activity curves are available for the brain regions of interest, kinetic modeling is described using different compartmental models. These compartments represent the different states of the radiotracer such as the bound state. This way, the PET signal of specifically tracer can be separated from tracer that is free or nonspecifically bound. In this context, quantitative endpoints such as distribution volume and binding potential are discussed. Next to compartment modeling, graphical analysis techniques for reversible and irreversible tracer kinetics are discussed. These techniques are computational efficient and therefore suitable for creating parametric image data. These parametric image data allow voxel-wise statistical comparison of dynamic PET data. In terms of different options for the input function which is needed for tracer kinetic modeling, we discuss different possibilities including a reference tissue model. Finally, we elaborate on the advantages and limitations of a bolus/constant infusion approach to quantify tracer uptake under steady-state conditions.

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Correspondence to Michel Koole .

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© 2014 Springer-Verlag Berlin Heidelberg

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Koole, M., Casteels, C., Van Laere, K. (2014). PET Quantification in Neuropsychiatry. In: Dierckx, R., Otte, A., de Vries, E., van Waarde, A., den Boer, J. (eds) PET and SPECT in Psychiatry. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-40384-2_2

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  • DOI: https://doi.org/10.1007/978-3-642-40384-2_2

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-40383-5

  • Online ISBN: 978-3-642-40384-2

  • eBook Packages: MedicineMedicine (R0)

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