PetsPositron-Emission TomographyRadiopharmaceuticalsFluorodeoxyglucose F18Tomography, Emission-ComputedFluorine RadioisotopesMultimodal ImagingTomography, X-Ray ComputedSubtraction TechniqueSensitivity and SpecificityCopper RadioisotopesOxygen RadioisotopesRadioactive TracersBrainImage Processing, Computer-AssistedAnimals, DomesticRadiochemistryMagnetic Resonance ImagingTissue DistributionNitrogen RadioisotopesReproducibility of ResultsImage Interpretation, Computer-AssistedDihydroxyphenylalanineWhole-Body CountingPhantoms, ImagingGallium RadioisotopesDogsTime FactorsZoonosesSpecies SpecificityImage EnhancementArtifactsDideoxynucleosidesMetabolic Clearance RateRacloprideDeoxyglucoseMolecular Sequence DataNuclear MedicineRubidium RadioisotopesPan troglodytesDisease Models, AnimalTomography, Emission-Computed, Single-PhotonIsotope LabelingNeoplasmsDog DiseasesPapioHominidaeThiosemicarbazonesCerebrovascular CirculationModels, BiologicalMacaca mulattaLutetiumGermaniumOrganometallic CompoundsReference ValuesAlgorithmsGamma CamerasRadioisotopesHeterocyclic Compounds, 1-RingNeoplasm StagingFeasibility StudiesPhylogenyBrain MappingGlucoseBase SequenceLung NeoplasmsHeartCatsMisonidazoleImaging, Three-DimensionalAmino Acid SequenceMolecular ImagingIodine RadioisotopesBromine RadioisotopesMice, Inbred C57BLRetrospective StudiesReceptors, Dopamine D2Muscle, SkeletalDisease ReservoirsRegional Blood FlowMacaca fascicularisMutationFecesDiagnostic ImagingCat DiseasesSequence Analysis, DNAAnalysis of VarianceDose-Response Relationship, DrugAgingAniline CompoundsTreatment OutcomeContrast MediaSalicylamidesFlumazenilCoronary CirculationPredictive Value of TestsLiverSwinePhenotypeCross-Over Studies