Diffusion exchange spectroscopy (DEXSY) is successfully used in conjunction with imaging on the spinal cord, and with excellent prospects for preclinical and clinical applications. DESXY is a model-free approach to measure water migration between and among distinct microenvironments. The time dependency of water migration from the intra- and extracellular microdomains indicates that different regions within gray or white matter exhibit different exchange kinetics, and points to the importance of the spatial scale of this heterogeneity.
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