Table 1. Principal characteristics of studied subjects.

	a-MCI	HS
	N = 31	N = 26
Mean (SD) age [years]	71.3 (8.1)	67.5 (7.0)
F/M ratio	14/17	11/15
Mean (SD) MMSE	26.0 (1.6)*	28.6 (1.4)
Mean (SD) Hachinski score	1.3 (1.6)	0.8 (1.3)
Mean (SD) T2-lesion volume [mL]	3.8 (5.8)	1.6 (2.9)
Mean (SD) T2-lesion fraction	0.3 (0.4)	0.1 (0.2)

Abbreviations: a-MCI = amnestic Mild Cognitive Impairment; HS = healthy subjects; MMSE = Mini Mental State Examination.

*a-MCI vs. HS p-value≤ 0.05.