PetsPositron-Emission TomographyFluorodeoxyglucose F18RadiopharmaceuticalsTomography, Emission-ComputedFluorine RadioisotopesMultimodal ImagingTomography, X-Ray ComputedSubtraction TechniqueOxygen RadioisotopesAnimals, DomesticCopper RadioisotopesSensitivity and SpecificityRaccoon DogsRadioactive TracersRadiochemistryReproducibility of ResultsImage Processing, Computer-AssistedNitrogen RadioisotopesBrainImage Interpretation, Computer-AssistedTissue DistributionDihydroxyphenylalaninePhantoms, ImagingGallium RadioisotopesWhole-Body CountingMagnetic Resonance ImagingBites and StingsCat DiseasesImage EnhancementDideoxynucleosidesArtifactsDeoxyglucoseRubidium RadioisotopesNuclear MedicineCoronary CirculationRacloprideCatsMetabolic Clearance RateHeartTime FactorsBonding, Human-PetTomography, Emission-Computed, Single-PhotonRadioisotopesIsotope LabelingGermaniumOrganometallic CompoundsLutetiumThiosemicarbazonesZoonosesDirofilaria immitisNeoplasmsHemodynamicsHeterocyclic Compounds, 1-RingGamma CamerasCerebrovascular CirculationNeoplasm StagingWolvesMisonidazoleFeasibility StudiesDirofilariasisLeishmania infantumRetrospective StudiesMyocardiumBromine RadioisotopesLung NeoplasmsIodine RadioisotopesHeart RateBlood PressureGlucoseAlgorithmsMolecular ImagingRabiesImaging, Three-DimensionalTreatment OutcomeDisease Models, AnimalPapioContrast MediaSpecies SpecificityAniline CompoundsSalicylamidesDogsAnesthesiaDiagnostic ImagingRegional Blood FlowFlumazenilTomography Scanners, X-Ray ComputedFlea InfestationsRespiratory-Gated Imaging TechniquesLymphatic MetastasisConsciousnessReceptors, Dopamine D2AmmoniaInjections, IntravenousPredictive Value of TestsTetrabenazineBrain NeoplasmsSilicatesPrognosisEuthanasia, Animal