Tomography, X-Ray ComputedTomographyAirway RemodelingAirway ObstructionPositron-Emission TomographyAirway ResistanceTomography, Optical CoherenceTomography, Emission-ComputedTomography, Spiral ComputedTomography, OpticalMultidetector Computed TomographyBronchiTomography, Emission-Computed, Single-PhotonRespiratory SystemCone-Beam Computed TomographyElectron Microscope TomographyBronchial HyperreactivityLungAirway ManagementRespiratory MucosaAsthmaTomography, X-RayFluorodeoxyglucose F18Tomography Scanners, X-Ray ComputedBronchoconstrictionImaging, Three-DimensionalRespiratory HypersensitivityBronchoalveolar Lavage FluidBronchographyBronchial Provocation TestsLaryngeal MasksSensitivity and SpecificityContinuous Positive Airway PressureImage Processing, Computer-AssistedMucusIntubation, IntratrachealReproducibility of ResultsRespiratory MechanicsRespiratory Function TestsMuscle, SmoothBronchoscopyMagnetic Resonance ImagingX-Ray MicrotomographyEosinophilsForced Expiratory VolumeRadiographic Image Interpretation, Computer-AssistedMultimodal ImagingFluorine RadioisotopesPhantoms, ImagingEpithelial CellsRespiratory Physiological PhenomenaPredictive Value of TestsAdministration, InhalationTime FactorsTreatment OutcomeCystic FibrosisBronchitisRetrospective StudiesLung CompliancePharynxProspective StudiesDiagnostic ImagingPulmonary VentilationLarynxLung Volume MeasurementsAir PressureEquipment DesignInflammationRadiography, ThoracicDisease Models, AnimalFour-Dimensional Computed TomographyBronchial DiseasesFiber Optic TechnologyHypersensitivityAerosolsRadiographic Image EnhancementContrast MediaInhalationBrainPneumoniaPositive-Pressure RespirationRadiography, AbdominalBronchiolesSputumMice, Inbred BALB CVital CapacityAlgorithmsCalcinosisPulmonary EosinophiliaAnatomy, Cross-SectionalEosinophiliaLung Diseases, ObstructiveBronchodilator AgentsPulmonary Disease, Chronic ObstructiveSpirometryMucociliary ClearanceHistamineMacula LuteaPulmonary EmphysemaLung Diseases