Disrupted blood brain barrier (BBB) is reported to be one of the causes in various neuropathological diseases1. We assessed the quantified permeability of BBB using blood to tissue water exchange dynamics by employing multi-echo ASL sequence in five healthy individuals. A repeated measurement was conducted to assess the robustness and precision of the method. The average gray matter values were 357 ± 62 ms which are in-accordance with the literature reported values.
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