Carbon RadioisotopesCarbonRadioisotopesZinc RadioisotopesRadioisotope Dilution TechniqueStrontium RadioisotopesCarbon DioxideIodine RadioisotopesBrain ChemistryKrypton RadioisotopesCarbon MonoxideNanotubes, CarbonIndium RadioisotopesBrain InjuriesSodium RadioisotopesBrain NeoplasmsRadioactivityBarium RadioisotopesRadionuclide ImagingYttrium RadioisotopesCarbon IsotopesTin RadioisotopesBrain MappingIron RadioisotopesPhosphorus RadioisotopesCopper RadioisotopesBeta ParticlesTechnetiumCarbon Monoxide PoisoningMercury RadioisotopesIsotope LabelingTechnetium Tc 99m Sulfur ColloidCesium IsotopesCerium RadioisotopesCobalt IsotopesHafniumGold RadioisotopesDiagnostic Techniques, RadioisotopeLead RadioisotopesBrainSulfur RadioisotopesZinc IsotopesRadiopharmaceuticalsCadmium RadioisotopesAstatineTissue DistributionBrain EdemaRadioimmunotherapyLutetiumRheniumBrain StemMagnetic Resonance ImagingSamariumBrain IschemiaSoil Pollutants, RadioactiveCarbon TetrachlorideBromine RadioisotopesScintillation CountingSubdural EffusionCalcium IsotopesSerum Albumin, Radio-IodinatedRadioactive WasteCarbon SequestrationRadiometric DatingCarbon DisulfideRuthenium RadioisotopesIsotopesTime FactorsTungstenAlpha ParticlesSelenium RadioisotopesHeterocyclic Compounds, 1-RingSodium Pertechnetate Tc 99mBrain AbscessPentetic AcidMethodsSpectrometry, GammaRadioisotope TeletherapyNuclear MedicineTechnetium Tc 99m PentetateRadiometryTritiumAutoradiographyRosaniline DyesRats, Sprague-DawleyKineticsNostoc communeWhole-Body CountingNeuronsCarbon Tetrachloride PoisoningHypoxia, BrainPotassium RadioisotopesOrganometallic CompoundsMolecular Sequence DataBlood-Brain BarrierCerebral CortexRadiation DosageIodohippuric AcidGlucoseIntestinal Absorption