Titre
PET Molecular Imaging of Hypoxia in Ischemic Stroke: An Update.
Type
article
Institution
UNIL/CHUV/Unisanté + institutions partenaires
Périodique
Auteur(s)
Baskin, A.
Auteure/Auteur
Buchegger, F.
Auteure/Auteur
Seimbille, Y.
Auteure/Auteur
Ratib, O.
Auteure/Auteur
Garibotto, V.
Auteure/Auteur
Liens vers les personnes
Liens vers les unités
ISSN
1875-6212
Statut éditorial
Publié
Date de publication
2015
Volume
13
Numéro
2
Première page
209
Dernière page/numéro d’article
217
Peer-reviewed
Oui
Langue
anglais
Notes
Publication types: Journal Article ; Review
Publication Status: ppublish
Publication Status: ppublish
Résumé
Hypoxia, a condition of insufficient oxygen availability to support metabolism, occurs when the vascular supply is interrupted, as in stroke. The identification of the hypoxic and viable tissue in stroke as compared with irreversible lesions (necrosis) has relevant implications for the treatment of ischemic stroke. Traditionally, imaging by positron emission tomography (PET), using 15O-based radiotracers, allowed the measurement of perfusion and oxygen extraction in stroke, providing important insights in its pathophysiology. However, these multitracer evaluations are of limited applicability in clinical settings. More recently, specific tracers have been developed, which accumulate with an inverse relationship to oxygen concentration and thus allow visualizing the hypoxic tissue non invasively. These belong to two main groups: nitroimidazoles, and among these the 18F-Fluoroimidazole (18F-FMISO) is the most widely used, and the copper-based tracers, represented mainly by Cu-ATSM. While these tracers have been at first developed and tested in order to image hypoxia in tumors, they have also shown promising results in stroke models and preliminary clinical studies in patients with cardiovascular disorders, allowing the detection of hypoxic tissue and the prediction of the extent of subsequent ischemia and clinical outcome. These tracers have therefore the potential to select an appropriate subgroup of patients who could benefit from a hypoxia-directed treatment and provide prognosis relevant imaging. The molecular imaging of hypoxia made important progress over the last decade and has a potential for integration into the diagnostic and therapeutic workup of patients with ischemic stroke.
Sujets
PID Serval
serval:BIB_00915753BA86
PMID
Date de création
2014-01-13T14:35:11.815Z
Date de création dans IRIS
2025-05-20T19:57:04Z