DiffusionExtracellular SpaceDiffusion Magnetic Resonance ImagingDiffusion Tensor ImagingAnisotropyNerve Fibers, MyelinatedBrainFacilitated DiffusionModels, BiologicalComputer SimulationKineticsAlgorithmsTime FactorsImage Processing, Computer-AssistedBiological TransportCell MembraneMicroscopy, ElectronPhotobleachingMathematicsDiffusion of InnovationImage Interpretation, Computer-AssistedPotassiumFluorescence Recovery After PhotobleachingMagnetic Resonance ImagingReproducibility of ResultsImage Enhancement