Positron-Emission TomographyTomography, Emission-ComputedFluorodeoxyglucose F18RadiopharmaceuticalsTomography, X-Ray ComputedFluorine RadioisotopesMultimodal ImagingCarbon RadioisotopesOxygen RadioisotopesBrainMagnetic Resonance ImagingRacloprideTomography, Emission-Computed, Single-PhotonNitrogen RadioisotopesCopper RadioisotopesCerebrovascular CirculationRadioactive TracersDeoxyglucoseSensitivity and SpecificityImage Processing, Computer-AssistedGamma CamerasDiagnostic ImagingTomographyTissue DistributionWhole Body ImagingRadioisotopesGallium RadioisotopesDihydroxyphenylalanineReproducibility of ResultsPredictive Value of TestsAniline CompoundsReceptors, Dopamine D2Rubidium RadioisotopesBrain MappingMisonidazoleNeoplasm StagingCoronary CirculationGlucoseSalicylamidesTomography, Optical CoherenceFlumazenilPapioRadionuclide ImagingMolecular ImagingLung NeoplasmsRadiochemistryTomography, Spiral ComputedTetrabenazinePapio anubisPhantoms, ImagingIsotope LabelingCorpus StriatumDideoxynucleosidesPhotographyTime FactorsReceptors, Dopamine D3Prospective StudiesHeartLymphatic MetastasisTreatment OutcomeDopamine AntagonistsRegional Blood FlowRetrospective StudiesNortropanesTomography, OpticalHeterocyclic Compounds, 1-RingDipyridamoleSolitary Pulmonary NoduleMyocardial Perfusion ImagingCerebral CortexDopamineIodine RadioisotopesNuclear MedicineImaging, Three-DimensionalImage Interpretation, Computer-AssistedAlzheimer DiseaseDiprenorphineSpiperonePutamenScintillation CountingPrognosisAlgorithmsTechnology, RadiologicIncidental FindingsCaudate NucleusImage EnhancementReference ValuesBlood VolumeFrontal LobeMultidetector Computed TomographyArabinofuranosyluracilNeoplasmsFluorineAutoradiographyHodgkin DiseaseRadioligand AssayContrast MediaArtifactsSubtraction TechniqueBenzothiazoles