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Abstract #5254

Translational validation of a MRI-based CMRO2 mapping method for penumbra definition in acute ischemic stroke

Lucie Chalet1,2, Timothé Boutelier2, Thomas Christen3, Justine Debatisse4, Oceane Wateau5, Nicolas Costes6, Ines Merida6, Sophie Lancelot6,7, Christelle Leon1, Norbert Nighoghossian1,8, Yves Berthezene9,10, Omer Faruk Eker9,10, Tae-Hee Cho1,8, Emmanuelle Canet-Soulas1, and Laura Mechtouff1,8
1Univ Lyon, CarMeN Laboratory, INSERM, INRA, INSA Lyon, Universite Claude Bernard Lyon 1, Lyon, France, 2Olea Medical, La Ciotat, France, 3Univ. Grenoble Alpes, Inserm, U1216, Grenoble Institut Neurosciences, Grenoble, France, 4Institut des Sciences Cognitives Marc Jeannerod (ISCMJ), Unite Mixte de Recherche 5229 du Centre National de la Recherche Scientifique (CNRS), Bron, France, 5Cynbiose SAS, Marcy-L'Etoile, France, 6CERMEP - Imagerie du Vivant, Lyon, France, 7Hospices Civils of Lyon, Lyon, France, 8Stroke department, Hospices Civils of Lyon, Lyon, France, 9CREATIS, CNRS UMR-5220, INSERM U1206, Universite Lyon 1, INSA Lyon, Villeurbanne, France, 10Neuroradiology department, Hospices Civils of Lyon, Lyon, France

Synopsis

Keywords: Data Processing, Oxygenation, Oxygen MetabolismLatest challenges in acute ischemic stroke management involve tissue-based approaches to define a tailored ischemic penumbra to each patients. Oxygen metabolism imaging offers new perspectives to tackle these challenges. A fully automated pipeline was developed providing oxygen metabolism parameters from MRI acquisitions including advanced processing methods such as motion-correction, registration and bayesian-based deconvolution. The method was tested on an ischemia-reperfusion non-human primate model with simultaneous PET-MRI acquisitions providing gold-standard comparison of oxygen parameters. Results show strong similarities in ratio of penumbral tissues detected in the ischemic hemisphere between the two modalities and opens new perspectives of improvement in parameters definition.

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Keywords