Diffusion Magnetic Resonance ImagingMagnetic Resonance ImagingDiffusionDiffusion Tensor ImagingImage Processing, Computer-AssistedBrainMagnetic Resonance SpectroscopyMagnetic Resonance AngiographyMagnetic Resonance Imaging, CineContrast MediaGadolinium DTPABrain MappingImage Interpretation, Computer-AssistedNuclear Magnetic Resonance, BiomolecularGadoliniumImage EnhancementAnisotropyReproducibility of ResultsElectron Spin Resonance SpectroscopyImaging, Three-DimensionalSensitivity and SpecificitySurface Plasmon ResonanceFacilitated DiffusionFluorescence Resonance Energy TransferMagnetic Resonance Imaging, InterventionalAlgorithmsTomography, X-Ray ComputedOxygenTime FactorsProtonsNerve Fibers, Myelinated