title: Stroke: high-field magnetic resonance imaging.
abstract: Diagnostic modalities for the diagnosis of acute stroke have increased in number and quality. Magnetic resonance imaging has increasingly become a central tool for the management of patients with stroke. New sequences, such as diffusion and perfusion, provide insight into the infarcted core and the hypoperfused brain. The use of higher magnetic fields allows us to gain in signal strength, which can be used to improve imaging speed and/or resolution. Recent additional sequences allow perfusion without contrast and susceptibility-weighted imaging can help identify early bleeding. These new techniques should provide more information about the on going ischemic process.
authors.affiliation: Division of Neuroradiology, Department of Imaging and Medical Informatics, Geneva University Hospitals HUG, 4 rue Gabrielle-Perret-Gentil, 1211 Geneva, Switzerland. karl-olof.lovblad@hcuge.ch
authors.forename: Karl-Olof
authors.initials: KO
authors.lastname: Lövblad
authors.forename: Sven
authors.initials: S
authors.lastname: Haller
authors.forename: Vitor Mendes
authors.initials: VM
authors.lastname: Pereira
mesh_terms: D001921:Brain / Q000473:pathology*; D002545:Brain Ischemia / Q000150:complications* / Q000473:pathology*; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D020521:Stroke / Q000209:etiology* / Q000473:pathology*