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Table 1: Description of the mean, standard deviation, and median percentages of atrophy between the 7 techniques at 6 and 12 months on MRI1
Technique 6 months 12 months
Mean SD Median Mean SD Median
Segmentation-classification −0.03 2.87 −0.73 −0.64 0.95 −0.26
FreeSurfer −0.53 0.74 −0.61 −0.83 1.51 −0.81
BBSI −0.32 0.29 −0.33 −0.45 0.39 −0.46
KN-BSI −0.29 0.37 −0.38 −0.26 0.45 −0.34
SIENA −0.30 0.51 −0.34 −0.78 0.76 −0.85
SIENAX −0.94 2.26 −0.80 −0.66 2.88 −0.88
JI −0.26 0.12 −0.24 −0.26 0.16 −0.27

Technique	6 months			12 months
Technique	Mean	SD	Median	Mean	SD	Median
Segmentation-classification	−0.03	2.87	−0.73	−0.64	0.95	−0.26
FreeSurfer	−0.53	0.74	−0.61	−0.83	1.51	−0.81
BBSI	−0.32	0.29	−0.33	−0.45	0.39	−0.46
KN-BSI	−0.29	0.37	−0.38	−0.26	0.45	−0.34
SIENA	−0.30	0.51	−0.34	−0.78	0.76	−0.85
SIENAX	−0.94	2.26	−0.80	−0.66	2.88	−0.88
JI	−0.26	0.12	−0.24	−0.26	0.16	−0.27