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Abstract #3893

Gas-free cerebrovascular reactivity predicts cognition in older individuals

Lori Donaldson1, Beini Hu1, Mahsa Mayeli1, Huajun Liang1, Yuecen Jin1, Kaisha Hazel2, George Pottanat2, Ebony Jones2, Linda Chang1, Hanzhang Lu2, and Peiying Liu1
1Diagnostic Radiology, University of Maryland School of Medicine, Baltimore, MD, United States, 2Radiology, Johns Hopkins University, Baltimore, MD, United States

Synopsis

Keywords: Dementia, Neurodegeneration, Biomarkers, Diagnosis/Prediction

Motivation: Small-vessel-disease (SVD), a contributing risk factor in vascular cognitive impairment and dementia (VCID), needs sensitive biomarkers to assess the brain.

Goal(s): Our goal is to evaluate whether gas-free cerebrovascular reactivity (CVR) can predict cognitive function in older individuals.

Approach: We performed gas-free CVR mapping with intermittent breath modulation in two studies of elderly individuals and evaluated the relationship between gas-free CVR and global cognition.

Results: Higher whole-brain gas-free CVR was correlated with better MoCA scores.

Impact: Gas-free cerebrovascular reactivity (CVR) using intermittent breath modulation can be used as a practical tool to evaluate cerebrovascular function and probe vascular pathology in small-vessel-disease (SVD) and vascular cognitive impairment and dementia (VCID).

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Keywords