Quantitative evaluation of cerebral white matter in patients with multiple sclerosis using multicomponent T2 mapping

Area of Science:

• Neuroimaging
• Biophysics
• Clinical Neurology

Background:

• Standard magnetic resonance imaging (MRI) for white matter (WM) pathology in multiple sclerosis (MS) has limitations in correlating imaging findings with clinical outcomes.
• Characterizing normal-appearing white matter (NAWM) and lesions requires advanced techniques to understand the relationship between tissue properties and disease severity.

Purpose of the Study:

• To utilize multicomponent T2 mapping to characterize WM, including NAWM and MS lesions.
• To investigate the relationship between T2 relaxation times, age, and disease severity (Expanded Disability Status Scale - EDSS) in MS patients.

Main Methods:

• Twenty-nine MS patients and 27 healthy controls underwent MRI with T2 mapping of WM.
• The relative abundance of different T2 water pools was analyzed.
• Correlations between T2 values, age, and EDSS were performed.

Main Results:

• Increased T2 values associated with myelin-bound water were observed with age in both healthy controls and MS patients.
• Decreased T2 values related to intra- and extracellular water were found with age and higher EDSS in MS patients.
• A significant increase in mixed water pools (T2 > 110 ms) strongly correlated with higher EDSS in MS patients.

Conclusions:

• Multicomponent T2 mapping provides valuable insights into WM changes in MS.
• This technique can serve as a useful biomarker for monitoring MS progression.