La maladie de Parkinson au Canada (serveur d'exploration)

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Voxel-based imaging of translocator protein 18kDa (TSPO) in high-resolution PET

Identifieur interne : 001345 ( Ncbi/Checkpoint ); précédent : 001344; suivant : 001346

Voxel-based imaging of translocator protein 18kDa (TSPO) in high-resolution PET

Auteurs : Ji Hyun Ko [Canada] ; Yuko Koshimori [Canada] ; Romina Mizrahi [Canada] ; Pablo Rusjan [Canada] ; Alan A. Wilson [Canada] ; Anthony E. Lang [Canada] ; Sylvain Houle [Canada] ; Antonio P. Strafella [Canada]

Source :

RBID : PMC:3587822

Abstract

In vivo imaging of translocator protein 18 kDa (TSPO) has received significant attention as potential biomarker of microglia activation. Several radioligands have been designed with improved properties. Our group recently developed an 18F-labeled TSPO ligand, [18F]-FEPPA, and confirmed its reliability with a 2-tissue compartment model. Here, we extended, in a group of healthy subjects, its suitability for use in voxel-based analysis with the newly proposed graphical analysis approach, Relative-Equilibrium-Gjedde-Patlak (REGP) plot. The REGP plot successfully replicated the total distribution volumes estimated by the 2-tissue compartment model. We also showed its proof-of-concept in a patient with possible meningioma showing increased [18F]-FEPPA total distribution volume.


Url:
DOI: 10.1038/jcbfm.2012.203
PubMed: 23281426
PubMed Central: 3587822


Affiliations:


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PMC:3587822

Le document en format XML

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<italic>In vivo</italic>
imaging of translocator protein 18 kDa (TSPO) has received significant attention as potential biomarker of microglia activation. Several radioligands have been designed with improved properties. Our group recently developed an
<sup>18</sup>
F-labeled TSPO ligand, [
<sup>18</sup>
F]-FEPPA, and confirmed its reliability with a 2-tissue compartment model. Here, we extended, in a group of healthy subjects, its suitability for use in voxel-based analysis with the newly proposed graphical analysis approach, Relative-Equilibrium-Gjedde-Patlak (REGP) plot. The REGP plot successfully replicated the total distribution volumes estimated by the 2-tissue compartment model. We also showed its proof-of-concept in a patient with possible meningioma showing increased [
<sup>18</sup>
F]-FEPPA total distribution volume.</p>
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