Brain InfarctionStroke, LacunarCerebral InfarctionLeukoaraiosisMagnetic Resonance ImagingRisk FactorsInfarctionBrain IschemiaMyocardial InfarctionCerebrovascular DisordersStrokeBrainAsymptomatic DiseasesIntracranial Embolism and ThrombosisHyperhomocysteinemiaIschemic Attack, TransientInfarction, Middle Cerebral ArteryIntracranial EmbolismProspective StudiesTime FactorsIncidenceBrain ChemistryBrain EdemaIntracranial ArteriosclerosisCerebrovascular CirculationTomography, X-Ray ComputedBrain InjuriesCohort StudiesCerebral HemorrhageBrain NeoplasmsAcute DiseaseNetherlandsCerebral ArteriesBrain MappingFollow-Up StudiesDisease Models, AnimalNeuroprotective AgentsCognition DisordersCerebral AngiographyCase-Control StudiesTreatment OutcomeElectrocardiographyRiskHypertensionRecurrenceRisk AssessmentMagnetic Resonance AngiographyDiffusion Magnetic Resonance ImagingRats, Sprague-DawleyPredictive Value of TestsJapan