Mechanical ThrombolysisIschemiaThrombectomyTreatment OutcomeCerebral RevascularizationStentsVertebrobasilar InsufficiencyInfarction, Middle Cerebral ArteryCerebral AngiographyDental Restoration, PermanentEndovascular ProceduresBrain IschemiaStrokeIntracranial AneurysmRegional Blood FlowBlood Flow VelocityDevice ApprovalFlow CytometryDental Restoration FailureRetrospective StudiesEquipment DesignIntrauterine DevicesDental AmalgamEquipment Safety