Synthetic MRI Neuroimaging Correlates of Frailty: Correlations Between Frailty Scales and Brain Structural Integrity

Area of Science:

• Gerontology
• Neuroimaging
• Neurology

Background:

• Frailty is a prevalent geriatric condition associated with adverse health outcomes.
• The relationship between frailty and brain structural integrity is not well-established.
• Understanding this link is crucial for developing targeted interventions.

Purpose of the Study:

• To investigate the association between frailty and brain structure.
• To examine correlations between frailty assessment scales and brain volumetric/relaxometric changes.
• To evaluate the utility of synthetic MRI in assessing frailty-related brain alterations.

Main Methods:

• Prospective study with 41 participants.
• Synthetic MRI (MAGiC) for volumetric and relaxometric analysis.
• Frailty assessed using Clinical Frailty Scale (CFS), Fried, FRAIL, and Edmonton Frailty Scale (EFS).
• Partial correlation analysis adjusted for age, gender, and stroke history; FDR correction applied.

Main Results:

• Frail individuals showed reduced gray matter (cerebellum, hippocampus, thalamus) and white matter volumes.
• Higher hippocampal and thalamic T1/T2 values observed in frail participants.
• CFS and EFS significantly correlated with global and regional brain volumes.

Conclusions:

• Significant correlations exist between frailty scales (CFS, EFS) and brain structural changes.
• CFS and EFS may be sensitive indicators of frailty's impact on brain structure.
• Synthetic MRI shows potential as a neuroimaging tool for frailty assessment.