Diffusion Magnetic Resonance ImagingIschemic Attack, TransientBrain IschemiaStrokeCerebral InfarctionIntracranial EmbolismCerebrovascular DisordersMagnetic Resonance ImagingCarotid StenosisBrainEcho-Planar ImagingInfarction, Middle Cerebral ArteryIntracranial ThrombosisTime FactorsCerebrovascular CirculationTomography, X-Ray ComputedEndarterectomy, CarotidRisk FactorsProspective StudiesCerebral ArteriesCerebral AngiographyMagnetic Resonance AngiographyIntracranial Embolism and ThrombosisBrain InfarctionFollow-Up StudiesRetrospective StudiesPredictive Value of TestsCerebral HemorrhageTreatment OutcomeCarotid Artery, InternalCarotid Artery DiseasesCarotid ArteriesAcute DiseaseSensitivity and SpecificityStentsRecurrenceArterial Occlusive DiseasesNeurologic ExaminationIschemiaSeverity of Illness IndexFibrinolytic AgentsIncidenceUltrasonography, Doppler, TranscranialEarly DiagnosisEndarterectomyIntracranial ArteriosclerosisDiffusionPrognosisNeurologyImage Processing, Computer-AssistedMiddle Cerebral ArteryTissue Plasminogen ActivatorDisease Models, AnimalPostoperative ComplicationsAngioplasty, BalloonReproducibility of ResultsIntracranial Arterial DiseasesCohort StudiesAspirinMoyamoya DiseaseEmbolismCerebral CortexDelayed DiagnosisAmaurosis FugaxAnticoagulantsVertebrobasilar InsufficiencySecondary PreventionReperfusionDementia, VascularPlatelet Aggregation InhibitorsBrain EdemaRats, WistarPrenatal DiagnosisDisease ProgressionRats, Sprague-DawleyAge FactorsRisk AssessmentImage EnhancementNeuroprotective AgentsAtrial FibrillationMultivariate AnalysisMigraine DisordersRiskInfarction, Posterior Cerebral ArteryThrombolytic TherapyFiltrationRecovery of Function