Carotid BodyCarotid Body TumorCarotid ArteriesTomography, X-Ray ComputedChemoreceptor CellsCarotid StenosisCarotid Artery DiseasesCarotid SinusEndarterectomy, CarotidCarotid Artery, InternalCarotid Artery, CommonTomographyAnoxiaSodium CyanidePositron-Emission TomographyTomography, Optical CoherenceCarotid Artery, ExternalParaganglia, NonchromaffinTomography, Emission-ComputedGlossopharyngeal NerveTomography, Spiral ComputedCarotid Artery ThrombosisCarotid Artery InjuriesTomography, OpticalMultidetector Computed TomographyDenervationCarotid Intima-Media ThicknessRespirationTomography, Emission-Computed, Single-PhotonOxygenAortic BodiesHypercapniaCarbon DioxideCatsCone-Beam Computed TomographyElectron Microscope TomographyTunica IntimaTunica MediaDomperidonePulmonary VentilationTomography, X-RayHyperoxiaCarotid Artery, Internal, DissectionReflexFluorodeoxyglucose F18PressoreceptorsTomography Scanners, X-Ray ComputedTime FactorsEndarterectomyParaganglioma, Extra-AdrenalBlood PressureCatecholaminesImaging, Three-DimensionalSympathectomyCerebral AngiographyStentsUltrasonography, Doppler, DuplexMagnetic Resonance ImagingRats, Sprague-DawleyTreatment OutcomeCell HypoxiaTyrosine 3-MonooxygenaseSensitivity and SpecificityIschemic Attack, TransientCerebrovascular CirculationDopamineCyanidesAnimals, NewbornReproducibility of ResultsPredictive Value of TestsProspective StudiesUltimobranchial BodyGanglia, SensoryHydrogen SulfideRabbitsRetrospective StudiesStrokePartial PressureCerebrovascular DisordersPotassium Channels, Tandem Pore DomainRisk FactorsImage Processing, Computer-AssistedAngiographyMagnetic Resonance AngiographyVagotomyUltrasonographyAngioplastyPhrenic NerveHyperventilationArteriosclerosisSuperior Cervical GanglionParagangliomaRegional Blood FlowBrainDihydroxyphenylalanineRespiratory CenterFollow-Up StudiesApneaRespiratory MechanicsDogs