Positron-Emission TomographyTomography, Emission-ComputedFluorodeoxyglucose F18RadiopharmaceuticalsTomography, X-Ray ComputedFluorine RadioisotopesMultimodal ImagingCarbon RadioisotopesOxygen RadioisotopesBrainMagnetic Resonance ImagingRacloprideTomography, Emission-Computed, Single-PhotonCopper RadioisotopesNitrogen RadioisotopesCerebrovascular CirculationRadioactive TracersDeoxyglucoseSensitivity and SpecificityImage Processing, Computer-AssistedDiagnostic ImagingTomographyTissue DistributionDihydroxyphenylalanineGallium RadioisotopesWhole Body ImagingPredictive Value of TestsRadioisotopesAniline CompoundsReceptors, Dopamine D2Reproducibility of ResultsRubidium RadioisotopesBrain MappingMisonidazoleNeoplasm StagingCoronary CirculationGlucoseSalicylamidesFlumazenilOtoacoustic Emissions, SpontaneousPapioTomography, Optical CoherenceLung NeoplasmsMolecular ImagingRadiochemistryTetrabenazinePapio anubisTomography, Spiral ComputedCorpus StriatumIsotope LabelingDideoxynucleosidesReceptors, Dopamine D3Prospective StudiesTreatment OutcomeLymphatic MetastasisTime FactorsPhantoms, ImagingNortropanesDopamine AntagonistsHeterocyclic Compounds, 1-RingRetrospective StudiesHeartRegional Blood FlowDipyridamoleSolitary Pulmonary NoduleCerebral CortexTomography, OpticalDopamineVehicle EmissionsAlzheimer DiseaseMyocardial Perfusion ImagingSpiperoneDiprenorphinePutamenPrognosisCaudate NucleusIncidental FindingsFrontal LobeReference ValuesBlood VolumeFluorineArabinofuranosyluracilImage Interpretation, Computer-AssistedNeoplasmsMultidetector Computed TomographyNuclear MedicineIodine RadioisotopesImaging, Three-DimensionalAmmoniaHodgkin DiseaseRadioligand AssayBenzothiazolesAlgorithmsAutoradiographyOrganometallic CompoundsTissue SurvivalOxygen ConsumptionThiazolesFollow-Up StudiesImage Enhancement