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Table 2: Description of the mean, standard deviation and median percentages of atrophy between the 7 techniques at 6 and 12 months on MRI2
Technique 6 months 12 months
Mean SD Median Mean SD Median
Segmentation-classification 1.78 1.13 1.76 2.08 1.86 2.39
FreeSurfer −0.60 1.37 −0.74 0.08 1.15 0.50
BBSI 0.53 0.20 0.55 0.61 0.49 0.35
KN-BSI −0.62 0.33 −0.68 −0.65 0.43 −0.75
SIENA −0.19 0.69 −0.13 −1.29 1.83 −0.76
SIENAX −0.14 1.42 0.22 −1.44 3.96 −0.23
JI −0.07 0.24 −0.06 −0.06 0.15 −0.03

Technique	6 months			12 months
Technique	Mean	SD	Median	Mean	SD	Median
Segmentation-classification	1.78	1.13	1.76	2.08	1.86	2.39
FreeSurfer	−0.60	1.37	−0.74	0.08	1.15	0.50
BBSI	0.53	0.20	0.55	0.61	0.49	0.35
KN-BSI	−0.62	0.33	−0.68	−0.65	0.43	−0.75
SIENA	−0.19	0.69	−0.13	−1.29	1.83	−0.76
SIENAX	−0.14	1.42	0.22	−1.44	3.96	−0.23
JI	−0.07	0.24	−0.06	−0.06	0.15	−0.03