Cerebral AngiographyTranscranial Magnetic StimulationUltrasonography, Doppler, TranscranialAngiographyMagnetic Resonance AngiographyCerebral ArteriesAngiography, Digital SubtractionCoronary AngiographyIntracranial AneurysmTomography, X-Ray ComputedCerebral InfarctionSubarachnoid HemorrhageCerebrovascular CirculationIntracranial Arteriovenous MalformationsMiddle Cerebral ArteryEvoked Potentials, MotorCircle of WillisCerebral VeinsCarotid Artery, InternalVertebral ArteryCerebrovascular DisordersMagnetic Resonance ImagingCranial SinusesIschemic Attack, TransientPosterior Cerebral ArteryCerebral HemorrhageMoyamoya DiseaseIntracranial Embolism and ThrombosisBrain IschemiaBlood Flow VelocityObserver VariationAneurysm, RupturedBasilar ArteryCentral Nervous System Vascular MalformationsReproducibility of ResultsCerebral Arterial DiseasesVasospasm, IntracranialMotor CortexIntracranial EmbolismBrainArterial Occlusive DiseasesSuperficial Back MusclesCarotid StenosisCerebral RevascularizationSensitivity and SpecificityTreatment OutcomeEmbolization, TherapeuticAnterior Cerebral ArteryFluorescein AngiographyContrast MediaCarotid Artery DiseasesVertebrobasilar InsufficiencyProspective StudiesVasculitis, Central Nervous SystemCerebral PalsyTime FactorsCraniotomyIntracranial ArteriosclerosisCollateral CirculationEchoencephalographyEndarterectomySinus Thrombosis, IntracranialCarotid ArteriesNeurosurgical ProceduresArteriovenous FistulaRetrospective StudiesStrokeBlindness, CorticalNeurologic ExaminationInfarction, Middle Cerebral ArteryEpilepsy, Tonic-ClonicFollow-Up StudiesArteriovenous MalformationsConstriction, PathologicHematoma, SubduralPredictive Value of TestsUltrasonographyCranial Fossa, AnteriorEndarterectomy, CarotidCarotid-Cavernous Sinus FistulaSurgical InstrumentsCavernous SinusVertebral Artery DissectionHeadacheFunctional LateralityMalaria, CerebralCarotid Artery ThrombosisTemporal ArteriesHematoma, Subdural, IntracranialIntracranial HemorrhagesPyramidal TractsComaLateral Medullary SyndromeRadionuclide AngiographyAneurysm, InfectedHematomaElectromyographyRemission, SpontaneousIntraoperative ComplicationsImaging, Three-Dimensional