Alzheimer DiseaseRadionuclide ImagingBrainTechnetiumMagnetic Resonance ImagingHematoma, SubduralBrain DiseasesBrain NeoplasmsBrain ChemistryBrain MappingTomography, X-Ray ComputedPsychoses, AlcoholicAmyloid beta-PeptidesHematoma, Epidural, CranialImage Processing, Computer-AssistedBrain InjuriesCerebral HemorrhageCerebrovascular DisordersBrain IschemiaCerebral CortexNeuropsychological TestsAmyloid beta-Protein Precursortau ProteinsNeurofibrillary TanglesCerebral InfarctionTime FactorsRadiopharmaceuticalsPositron-Emission TomographyTomography, Emission-Computed, Single-PhotonCerebrovascular CirculationPlaque, AmyloidReproducibility of ResultsImage Interpretation, Computer-AssistedRetrospective StudiesFunctional LateralityApolipoprotein E4AtrophyCognition DisordersBrain EdemaNeuronsBrain StemDementiaPredictive Value of TestsNeurofibrilsAmyloid Precursor Protein SecretasesPresenilin-1HippocampusAmyloidAgingBrain AbscessCognitionPeptide FragmentsDisease Models, AnimalDementia, VascularTreatment OutcomeBlood-Brain BarrierMild Cognitive ImpairmentMice, TransgenicNerve Tissue ProteinsApolipoproteins EFollow-Up StudiesHypoxia, BrainAge of OnsetSensitivity and SpecificityDisease ProgressionRisk FactorsMemory DisordersBrain InfarctionMolecular Sequence DataAutopsyPresenilin-2Case-Control StudiesRats, Sprague-DawleyProspective StudiesAge FactorsImmunohistochemistryBrain Damage, ChronicNerve DegenerationLewy Body DiseaseAspartic Acid EndopeptidasesCholinesterase InhibitorsMental Status ScheduleBiological MarkersAnalysis of VarianceLongitudinal StudiesAstrocytesNeurodegenerative DiseasesReference ValuesAniline CompoundsCohort StudiesTemporal LobeFrontal LobeAmino Acid SequenceSeverity of Illness IndexMutationFluorodeoxyglucose F18Genetic Predisposition to DiseaseMemantineMemoryGenotype