DiffusionPulmonary Gas ExchangeModels, BiologicalOxygen ConsumptionOxygenDiffusion Magnetic Resonance ImagingDiffusion Tensor ImagingFacilitated DiffusionAnisotropyNerve Fibers, MyelinatedDiffusion of InnovationFluorescence Recovery After PhotobleachingImage Processing, Computer-AssistedBrainReproducibility of ResultsAlgorithmsImage Interpretation, Computer-AssistedMobility LimitationDisk Diffusion Antimicrobial TestsImage EnhancementComputer SimulationMagnetic Resonance ImagingCorpus CallosumSensitivity and SpecificityTime FactorsDiffusion Chambers, CultureModels, Theoretical