Positron-Emission TomographyOtoacoustic Emissions, SpontaneousTomography, Emission-ComputedVehicle EmissionsFluorodeoxyglucose F18RadiopharmaceuticalsTomography, Emission-Computed, Single-PhotonFluorine RadioisotopesGreenhouse EffectSpectrometry, FluorescenceCarbon FootprintAir PollutantsMethaneMultimodal ImagingTomography, X-Ray ComputedCarbon RadioisotopesAtmosphereBrainVolatilizationPentanesFluorescent DyesEnvironmental MonitoringFluorescenceGasolineFossil FuelsSensitivity and SpecificitySpectrometry, X-Ray EmissionLuminescenceMagnetic Resonance ImagingPower PlantsVolatile Organic CompoundsCoalLuminescent MeasurementsCerebrovascular CirculationNitrous OxideDenitrificationTime FactorsCarbon DioxideImage Processing, Computer-AssistedOrganotechnetium CompoundsManureGasesAir PollutionCochleaReproducibility of ResultsPhotonsEnergy-Generating ResourcesConservation of Energy ResourcesModels, TheoreticalNitrogen RadioisotopesRadioactive TracersDiagnostic ImagingRadioisotopesThallium RadioisotopesKineticsIncinerationCarbonDeoxyglucoseRacloprideCopper RadioisotopesParticulate MatterTechnetium Tc 99m ExametazimeHemiterpenesOximesGas, NaturalAmmoniaGlobal WarmingTechnetium Tc 99m SestamibiTemperatureTissue DistributionModels, BiologicalEar CanalIodine RadioisotopesPredictive Value of TestsMolecular Sequence DataAlgorithmsSoilMolecular ImagingAcoustic Impedance TestsPhantoms, ImagingAgricultureFertilizersHeartHydrocarbonsTryptophanMyocardial Perfusion ImagingEnergy TransferQuantum DotsSpectrum AnalysisMicroscopy, FluorescencePerceptual DistortionPolycyclic Hydrocarbons, AromaticSemiconductorsIofetamineGallium RadioisotopesHousehold ArticlesCoronary CirculationAir Pollutants, OccupationalLuminescent AgentsFluorescence Polarization