Table 5 Comparison of RD values (×10⁻⁴mm²s⁻¹) of normal white matter or WMH with same Fazekas scale in different regions

Normal white matter

3.63 ± 0.79

2.59 ± 0.41^**

3.35 ± 0.53

2.33 ± 0.30^**

< 0.001

0.531

WMH of Fazekas scale 1

8.72 ± 0.64

5.86 ± 1.05^**

4.66 ± 0.50^**

5.31 ± 0.80^**

< 0.001

0.795

WMH of Fazekas scale 2

9.47 ± 0.54

5.89 ± 1.07^**

5.23 ± 1.16^**

5.79 ± 0.57^**

< 0.001

0.820

WMH of Fazekas scale 3

10.18 ± 0.72

7.33 ± 1.18^**

5.88 ± 1.00^**

6.52 ± 0.79^**

< 0.001

0.723