Cerebral AngiographyCerebral ArteriesCerebral InfarctionCerebral PalsyCerebrovascular CirculationMiddle Cerebral ArteryBrainInfarction, Middle Cerebral ArteryCoronary AngiographyMalaria, CerebralCerebral VeinsBrain IschemiaTomography, X-Ray ComputedAngiographyCerebral HemorrhageIntracranial AneurysmSubarachnoid HemorrhageMagnetic Resonance AngiographyIschemic Attack, TransientAngiography, Digital SubtractionMagnetic Resonance ImagingVasospasm, IntracranialBlood Flow VelocityCerebrovascular DisordersIntracranial Arteriovenous MalformationsCerebral RevascularizationTreatment OutcomeTime FactorsAnterior Cerebral ArteryCerebral Amyloid AngiopathyEmbolization, TherapeuticFollow-Up StudiesPosterior Cerebral ArteryFluorescein AngiographyArterial Occlusive DiseasesCerebral VentriclesBrain EdemaStentsVertebral ArteryAneurysm, RupturedArteriovenous FistulaIntracranial Embolism and ThrombosisChest PainMicrovascular AnginaRetrospective StudiesBrain DiseasesStrokePredictive Value of TestsTomography, Emission-Computed, Single-PhotonProspective StudiesCoronary StenosisDominance, CerebralRegional Blood FlowAneurysm, FalseIntracranial PressureConstriction, PathologicPulmonary EmbolismCerebrum