PetsPositron-Emission TomographyFluorodeoxyglucose F18RadiopharmaceuticalsTomography, Emission-ComputedFluorine RadioisotopesCalciumMultimodal ImagingThapsigarginTomography, X-Ray ComputedSubtraction TechniqueInositol 1,4,5-TrisphosphateCalcium ChannelsCalcium SignalingAnimals, DomesticOxygen RadioisotopesSensitivity and SpecificityCopper RadioisotopesInositol 1,4,5-Trisphosphate ReceptorsCaffeineRaccoon DogsRadioactive TracersCommerceImage Processing, Computer-AssistedReproducibility of ResultsRyanodineTerpenesRadiochemistryBrainTime FactorsTissue DistributionNitrogen RadioisotopesCalcium-Transporting ATPasesFura-2Image Interpretation, Computer-AssistedDihydroxyphenylalanineMagnetic Resonance ImagingPhantoms, ImagingEgtazic AcidGallium RadioisotopesWhole-Body CountingFerritinsFood SupplyBites and StingsIronIonomycinHeartCat DiseasesDeoxyglucoseCatsImage EnhancementIntracellular FluidRubidium RadioisotopesDideoxynucleosidesRyanodine Receptor Calcium Release ChannelBoron CompoundsArtifactsChelating AgentsCoronary CirculationEndoplasmic ReticulumMetabolic Clearance RateNuclear MedicineRacloprideBiological TransportAniline CompoundsKineticsGlucoseCytosolCells, CulturedBonding, Human-PetMyocardiumTomography, Emission-Computed, Single-PhotonLiverHydroquinonesDose-Response Relationship, DrugEnzyme InhibitorsIndolesModels, BiologicalOrganometallic CompoundsRadioisotopesIsotope LabelingGermaniumZoonosesMembrane PotentialsTRPC Cation ChannelsLutetiumNeoplasmsDogsThiosemicarbazonesFluorescent DyesEstrenesHemodynamicsAlgorithmsNorepinephrineDirofilaria immitisRats, Sprague-DawleyHeterocyclic Compounds, 1-RingGamma CamerasPyrrolidinonesCerebrovascular Circulation