Diffusion Magnetic Resonance ImagingMagnetic Resonance ImagingDiffusionDiffusion Tensor ImagingStrokeBrainImage Processing, Computer-AssistedBrain IschemiaMagnetic Resonance SpectroscopyMagnetic Resonance AngiographyCerebrovascular DisordersMagnetic Resonance Imaging, CineCerebral InfarctionFibrinolytic AgentsCerebral HemorrhageTissue Plasminogen ActivatorRisk FactorsAcute DiseaseIschemic Attack, TransientTime FactorsThrombolytic TherapyProspective StudiesTomography, X-Ray ComputedContrast MediaBrain InfarctionInfarction, Middle Cerebral ArteryTreatment OutcomePredictive Value of TestsIntracranial HemorrhagesFollow-Up StudiesReproducibility of ResultsGadolinium DTPAImage Interpretation, Computer-AssistedImage EnhancementBrain MappingSeverity of Illness IndexSensitivity and SpecificityIntracranial EmbolismCohort StudiesNuclear Magnetic Resonance, BiomolecularGadoliniumRetrospective StudiesIntracranial ThrombosisAnisotropyCerebrovascular CirculationCase-Control StudiesRecovery of FunctionCerebral AngiographyImaging, Three-DimensionalIntracranial ArteriosclerosisIncidenceSurface Plasmon ResonanceElectron Spin Resonance SpectroscopyFacilitated DiffusionReperfusionIntracranial Arterial DiseasesAnticoagulantsNeuroprotective AgentsRecurrenceAlgorithmsOxygenCerebral ArteriesFunctional LateralityCerebral CortexAge FactorsAtrial FibrillationPrognosisParesisNerve Fibers, MyelinatedOdds RatioEcho-Planar ImagingComorbidityStroke, LacunarFluorescence Resonance Energy TransferStroke VolumeBrain EdemaCarotid StenosisMagnetic Resonance Imaging, InterventionalNeurologic ExaminationRegistriesRisk AssessmentRiskMultivariate AnalysisCerebral RevascularizationDiagnostic ImagingDisease Models, AnimalPlatelet Aggregation InhibitorsProtons