[Correlation between diffusion tensor imaging and cognitive dysfunction in patients with delayed encephalopathy after...

Area of Science:

• Neuroimaging
• Neurology
• Radiology

Background:

• Delayed encephalopathy after acute carbon monoxide poisoning (DEACMP) can cause significant cognitive impairment.
• The microstructural changes in white matter (WM) associated with DEACMP are not fully understood.
• Non-invasive imaging techniques are needed to assess WM damage and its impact on cognition in DEACMP patients.

Purpose of the Study:

• To evaluate the diagnostic utility of magnetic resonance (MR) diffusion tensor imaging (DTI) in identifying brain white matter (WM) damage in DEACMP.
• To assess the correlation between DTI-derived metrics and cognitive dysfunction in DEACMP patients.

Main Methods:

• Thirteen DEACMP patients and 13 healthy controls underwent 1.5T MR DTI scans.
• Fractional anisotropy (FA) and apparent diffusion coefficient (ADC) values were measured in 16 WM regions of interest (ROIs).
• Cognitive function was assessed using the Montreal Cognitive Assessment (MoCA).

Main Results:

• DEACMP patients showed significantly increased ADC values and decreased FA values in most WM ROIs compared to controls.
• MoCA scores positively correlated with FA values in frontal and temporal lobes and total WM.
• MoCA scores inversely correlated with ADC values in the lower frontal WM.

Conclusions:

• DTI can quantitatively detect WM microstructural damage in DEACMP.
• DTI metrics correlate with the severity of cognitive dysfunction in DEACMP patients.
• DTI provides valuable insights into the pathogenesis and pathology of DEACMP.