CT-Detected MTA Score Related to Disability and Behavior in Older People with Cognitive Impairment

Area of Science:

• Neurology
• Radiology
• Geriatrics

Background:

• Medial temporal lobe atrophy (MTA) is a key indicator of neurodegeneration.
• Computed tomography (CT) scans are widely used for imaging brain structures.
• Understanding the relationship between MTA and clinical outcomes is crucial for diagnosis and management.

Purpose of the Study:

• To investigate the association between medial temporal lobe atrophy (MTA) scores from CT scans and clinical manifestations.
• To evaluate the correlation of MTA severity with cognitive deficits, functional impairment, and psycho-behavioral disorders.
• To explore the relationship between MTA and biomarkers like homocysteine, as well as comorbidities such as hypertension and atrial fibrillation.

Main Methods:

• Retrospective analysis of 239 patients (mean age 79.3 years) with varying degrees of MTA (0-4) assessed via CT scans.
• Comprehensive evaluation using cognitive, neuropsychiatric, affective, and functional assessment scales.
• Measurement of serum homocysteine, cholesterol, and glycemia levels; collection of data on hypertension and atrial fibrillation.

Main Results:

• Significant decline in cognitive and functional parameters with increasing MTA severity (p < 0.0001).
• Increased prevalence of Alzheimer's disease (AD) diagnoses correlating with higher MTA scores (p < 0.0001).
• Elevated homocysteine levels (p < 0.0001), depression (p < 0.0001), and anxiety (p = 0.001) were associated with greater MTA severity.

Conclusions:

• MTA score derived from CT scans is a valuable tool for assessing neurodegeneration.
• CT-based MTA assessment can aid in predicting cognitive decline, functional impairment, and psychiatric comorbidities.
• This study supports the utility of MTA scoring in neurodegenerative disorder research and clinical diagnosis.