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Scatter charts of Lsiph and RdMCA pulsatility indices (A) and LICA and RdMCA mean flow velocities (B) in subjects with MCI. The cutoff values are represented by the black horizontal lines. NDC, non-demented control; AD, Alzheimer’s disease; PI, pulsatility index; Lsiph, left siphon; RdMCA, right distal middle cerebral artery; MFV, mean flow velocity; LICA, left internal carotid.
