The aim of our study was to assess changes in brain tissue microstructures in hypothyroid patients using Diffusion Kurtosis Imaging (DKI). The water diffusion in living tissue is hindered by interactions with other molecules and cell membranes. Therefore, water movement in biological tissue is often non-Gaussian and this non-Gaussian behavior may contain useful information related to tissue structure and pathophysiology. Our findings demonstrate widespread reduced kurtosis indices MK, AK; diffusion index FA was decreased and AD was increased in major white matter pathways and such abnormal white matter structure may be linked to cognitive and behavioral impairment in hypothyroid patients.
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