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Table 2: 
Magnetization transfer ratio (MTR) values of smooth and irregular lesions in frontal and occipital white matter hyperintensities
SmoothIrregular
Frontal
    N7617
    MTR, % (SE)31.1 (0.3)31.6 (0.5)
    No. hypointense on T1 (%)57 (75%)14 (82%)
Occipital
    N448
    MTR, % (SE)32.1 (0.6)32.2 (0.2)
    No. hypointense on T1 (%)1 (25%)17 (35%)