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. Author manuscript; available in PMC: 2010 May 15.
Published in final edited form as: Neuroimage. 2010 Feb 6;51(1):63–75. doi: 10.1016/j.neuroimage.2010.01.104

Fig. 1.

Fig. 1

Mean level of progressive atrophy in AD and MCI groups after intervals of 6, 12, 18, and 24 months, respectively. Per the study design, AD patients were not scanned at the 18-month follow-up interval. Clearly, the profile of atrophy, and group differences, are easier to distinguish at later time points. Also, as expected, and as previously reported for 1-year follow-up only (Hua et al., 2009a; Ho et al., in press; Leow et al., 2009), the MCI mean atrophic rate is lower than that seen in AD, at every time-point.