Filter exchange imaging (FEXI) and diffusion time dependent diffusion kurtosis imaging (DKI(t)) are two techniques that are sensitive to water exchange between tissue compartments. However, built on different theoretical frameworks and models, many questions remain on the interpretations of FEXI and (DKI(t)) results in the brain. In this study, we measured water exchange effects in post-mortem mouse brains using FEXI and (DKI(t)) and observed a correlation between them, suggesting that they are sensitive to similar exchange processes.
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