FIGURE 5.

Region of interest (ROI) plots of diffusion tensor imaging (DTI) and log(CDI) values in regions where log(CDI) is greater in COVID− participants. The ROI is defined as tract‐based spatial statistics (TBSS) analysis regions where log(CDI) was greater in COVID− participants based on all gradient directions at b = 700 s/mm² in the TBSS analysis. Red line represents the median, the blue box represents the interquartile range, and black lines represent minimum and maximum. The left and right boxes represent COVID− and COVID+ groups, respectively. Larger median in the COVID− group is evident in log(CDI) (a), mean diffusivity (MD) (b), axial diffusivity (AD) (c), RD (d), fractional anisotropy (FA) (e), and mode of anisotropy (MO) (g). Larger median in the COVID+ group is evident in norm of anisotropy (NA) (f).