Despite the recent interest in diffusion kurtosis imaging (DKI) for assessing liver pathologies, its added value over more standard diffusion-weighted or diffusion tensor imaging techniques remains to be established. Importantly, mean diffusivity (MD) and mean kurtosis (MK) estimations are strongly dependent on the diffusion time (DT), a parameter generally overlooked in liver DKI studies. Here, we demonstrate ex vivo the relevance of short DT – namely 10 ms rather than 40 ms – for MK detection of liver disease, using two well-described mouse models of liver metastasis and fibrosis.
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