Positron-Emission TomographyTomography, Emission-ComputedFluorodeoxyglucose F18Tomography, X-Ray ComputedRadiopharmaceuticalsFluorine RadioisotopesMultimodal ImagingCarbon RadioisotopesOxygen RadioisotopesBrainTomographyTomography, Emission-Computed, Single-PhotonMagnetic Resonance ImagingRacloprideCopper RadioisotopesNitrogen RadioisotopesCerebrovascular CirculationTomography, Optical CoherenceRadioactive TracersSensitivity and SpecificityDeoxyglucoseImage Processing, Computer-AssistedTomography, Spiral ComputedDiagnostic ImagingTomography, OpticalTissue DistributionDihydroxyphenylalaninePredictive Value of TestsGallium RadioisotopesWhole Body ImagingReproducibility of ResultsMultidetector Computed TomographyRadioisotopesAniline CompoundsReceptors, Dopamine D2Rubidium RadioisotopesNeoplasm StagingBrain MappingMisonidazoleCoronary CirculationGlucoseCone-Beam Computed TomographyElectron Microscope TomographySalicylamidesFlumazenilLung NeoplasmsPapioMolecular ImagingRadiochemistryTetrabenazinePapio anubisPhantoms, ImagingProspective StudiesTreatment OutcomeRetrospective StudiesImaging, Three-DimensionalCorpus StriatumIsotope LabelingDideoxynucleosidesTime FactorsTomography, X-RayReceptors, Dopamine D3Tomography Scanners, X-Ray ComputedLymphatic MetastasisSolitary Pulmonary NoduleDopamine AntagonistsHeartRegional Blood FlowNortropanesHeterocyclic Compounds, 1-RingDipyridamoleCerebral CortexIncidental FindingsPrognosisMyocardial Perfusion ImagingDopamineContrast MediaAlzheimer DiseasePutamenSpiperoneDiprenorphineReference ValuesAlgorithmsCaudate NucleusFrontal LobeFollow-Up StudiesBlood VolumeImage EnhancementArabinofuranosyluracilFluorineNuclear MedicineNeoplasmsIodine RadioisotopesHodgkin DiseaseRadioligand AssaySubtraction TechniqueBenzothiazolesAutoradiographyArtifactsImage Interpretation, Computer-Assisted