Fig. 1: Differences in the white matter microstructures between recovered COVID-19 patients and healthy controls (HC).

Compared with HC, recovered COVID-19 patients showed significantly decreased fractional anisotropy (FA) (A), increased radial diffusivity (RD) (B), and increased mean diffusivity (MD) (C) in multiple brain regions (Pā<ā0.05, TFCE corrected), whereas no difference in axial diffusivity (AD) was observed.