Table 2.

Registration accuracy analysis

Error statistic	Rater 1		Rater 2		Combined
	Day 5	Day 40	Day 5	Day 40
Mean (mm)	0.239	0.204	0.248	0.1736	0.214
Standard deviation (mm)	0.107	0.109	0.164	0.1027	0.12
Maximum (mm)	0.461	0.382	0.591	0.4025	0.591
Minimum (mm)	0.104	0.06	0.085	0.06	0.06

Note. Two raters were asked to independently place landmarks on the template and twice on one brain each from day 5 and day 40. Land marked images were warped using shape transformations employed in subsequent analysis. Four statistics were computed to represent registration error.