Diffusion Magnetic Resonance ImagingMagnetic Resonance ImagingDiffusionDiffusion Tensor ImagingImage Processing, Computer-AssistedBrainMagnetic Resonance SpectroscopyMagnetic Resonance AngiographyMagnetic Resonance Imaging, CineContrast MediaImage Interpretation, Computer-AssistedImage EnhancementGadolinium DTPABrain MappingNuclear Magnetic Resonance, BiomolecularImaging, Three-DimensionalGadoliniumReproducibility of ResultsAnisotropySensitivity and SpecificitySurface Plasmon ResonanceElectron Spin Resonance SpectroscopyAlgorithmsFacilitated DiffusionTime FactorsTomography, X-Ray ComputedFluorescence Resonance Energy TransferMagnetic Resonance Imaging, InterventionalArtifactsPhantoms, ImagingOxygenProtonsNerve Fibers, Myelinated