Fig. 4

Differences in surfaces reconstructed by FastCSR, FreeSurfer and FastSurfer. a To quantitatively assess the surface agreement, we measured the average surface displacement between FastCSR and FreeSurfer across participants in the validation set. The maximal displacement between FreeSurfer and FastCSR was smaller than 0.5 mm, which is approximately half of the voxel size. b The average surface displacement between FastSurfer and FreeSurfer was also measured. The average surface displacement map showed a similar pattern with that observed from using the FastCSR method (Spearman’s ρ = 0.714, p < 0.0001). c The direct comparison of displacement maps between the FastCSR vs. FreeSurfer contrast and the FastSurfer vs. FreeSurfer contrast was performed. Results showed that the FastCSR approach achieved overall better performance. Lateral gyri and visual cortices showed significantly smaller displacement in the FastCSR versus FreeSurfer method than FastSurfer versus FreeSurfer (two-tailed paired t-tests, p < 0.01, FDR corrected)