White Matter Slow-4 fALFF as a Complementary Marker in the Multimodal Alzheimer's Disease Biomarker Landscape
INTRODUCTION White matter (WM) functional activity, quantified as slow-4 fractional amplitude of low-frequency fluctuations (fALFF; 0.027-0.073 Hz), may reflect Alzheimer's disease (AD) pathology, but its utility relative to established structural imaging markers remains poorly characterized. METHODS We analyzed 369 ADNI-3 participants with baseline resting-state fMRI. Global WM slow-4 fALFF…
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