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Abstract #3873

Normative age-trajectories of higher-order diffusion properties of major brain metabolites in cerebral and cerebellar gray matter using dMRS

Kadir Şimşek1,2, Cécile Gallea Gallea3,4, Guglielmo Genovese5, Stephane Lehéricy3,6, Francesca Branzoli3,7, and Marco Palombo1,2
1Cardiff University Brain Research Imaging Centre (CUBRIC), School of Psychology, Cardiff University, Cardiff, United Kingdom, 2School of Computer Science and Informatics, Cardiff University, Cardiff, United Kingdom, 3Brain and Spine Institute - ICM, Team "Movement Investigations and Therapeutics", Paris, France, 4INSERM U 1127, CNRS UMR 7225, Sorbonne University, Paris, France, 5Center for Magnetic Resonance Research, Department of Radiology,, University of Minnesota, Minneapolis, MN, United States, 6INSERM U 1127, CNRS UMR 7225,, Sorbonne University, Paris, France, 7Paris Brain Institute - ICM, Centre for Neuroimaging Research - CENIR, Paris, France

Synopsis

Keywords: Aging, Aging, dw-mrs, diffusion, brain, microstructure, metabolite

Motivation: Healthy brain aging involves intricate changes in both brain structure and function, including alterations in cellular composition and microstructure across various regions. We focus on microstructural changes by studying normative age-trajectories in cerebral and cerebellar gray matter in human brain.

Goal(s): Investigating microstructural changes in cerebral and cerebellar gray matter in human brain and provide benchmarks for the normative age-trajectories of higher-order metabolite diffusion properties.

Approach: Using DW-MRS and diffusion modelling for characterizing microstructural changes

Results: Our findings provide benchmarks for identifying anomalies in the diffusion properties of major brain metabolites, stemming from pathological mechanisms altering both the brain microstructure and cellular composition

Impact: This work investigates microstructural changes with aging in gray matter cerebral and cerebellar cortex in human brain DW-MRS. Moreover, it offers the first normative age-trajectories of metabolite diffusion characteristics, setting benchmark for detection and characterization of microstructural anomalies.

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Keywords