Cortical Surface Reconstruction from High-Resolution MR Brain Images

Table 1

Precision analysis: summary of the group-average statistics for the signed distance (SD) and absolute distance (AD) measure (in mm) between test and retest surfaces (surface: DF—DELFMAP, FS—FreeSurfer; L/R: left/right hemisphere; mean: a group average of a surface-wise mean of the distance; stdev: a group average of a surface-wise stdev of the distance; “>𝑋 mm (%)”: (group-average) percentage of surface points where AD was greater than 𝑋 mm; values in parentheses indicate the statistical spread within the group, measured by the group-wise stdev).

Surface	L/R	Signed distance		Absolute distance
		Mean (mm)	stdev (mm)	Mean (mm)	stdev (mm)	>1 mm (%)	>2 mm (%)
DF pial	L	−0.02 (0.03)	0.35 (0.06)	0.24 (0.02)	0.25 (0.04)	1.4 (0.3)	0.2 (0.1)
	R	−0.01 (0.04)	0.37 (0.09)	0.25 (0.02)	0.26 (0.06)	1.5 (0.4)	0.2 (0.2)
FS pial	L	−0.02 (0.04)	0.37 (0.10)	0.24 (0.02)	0.28 (0.06)	1.9 (0.4)	0.3 (0.2)
	R	−0.03 (0.04)	0.39 (0.13)	0.24 (0.03)	0.29 (0.08)	2.0 (0.4)	0.3 (0.2)
DF white	L	−0.01 (0.07)	0.34 (0.08)	0.24 (0.02)	0.24 (0.05)	1.0 (0.3)	0.2 (0.1)
	R	+0.02 (0.06)	0.35 (0.11)	0.24 (0.03)	0.24 (0.07)	1.0 (0.3)	0.2 (0.2)
FS white	L	+0.02 (0.02)	0.31 (0.10)	0.19 (0.02)	0.23 (0.07)	1.0 (0.3)	0.2 (0.2)
	R	+0.01 (0.02)	0.31 (0.13)	0.19 (0.03)	0.23 (0.08)	0.9 (0.3)	0.2 (0.2)