Analysis of AD and RD revealed that after controlling for age, lower FA values in left external capsule (WM02), left superior longitudinal fasciculus (WM05), left splenium of corpus callosum (WM08), left anterior corona radiata (WM09), right superior corona radiata (WM11), and left occipital white matter (WM12) clusters in the AUD group were due to higher average RD whereas lower FA in left external capsule (WM03) was due to lower average AD (Table 2; Figure 5).