Table 1.

Characteristics of total 61 healthy volunteers

Gender, n (%)		Age (years)	Age range	MMSE
Male	n = 19 (31%)	55.6 ± 13.6	24–73	28.9 ± 1.4	n.s
Female	n = 42 (69%)	53.4 ± 13.5	37–79	29.1 ± 1.5	n.s
Total	n = 61	53.7 ± 13.1	24–79	29.1 ± 1.5

MMSE Analysis in Age (years old)			MMSE Range	MMSE
20–39	n = 8		29–30	29.9 ± 0.4	n.s
40–49	n = 18		26–30	29.3 ± 1.4	n.s
50–59	n = 16		26–30	29.1 ± 1.5	n.s
60–69	n = 7		26–30	29.3 ± 1.5	n.s
70–79	n = 12		25–30	28.1 ± 1.8	n.s

Mean Cortical Index Analysis (years old)	50–60 min (1)	60–70 min (2)	% Increase (1) to (2)	50–70 min (average)
20–39	1.016 ± 0.046	1.032 ± 0.045	1.6	1.024 ± 0.045	*p < 0.05
40–49	1.050 ± 0.053	1.069 ± 0.053	1.8	1.059 ± 0.053	n.s
50–59	1.053 ± 0.063	1.071 ± 0.060	1.8	1.062 ± 0.064	n.s
60–69	1.066 ± 0.085	1.091 ± 0.098	2.3	1.078 ± 0.091	n.s
70–79	1.087 ± 0.091	1.105 ± 0.096	1.6	1.096 ± 0.093	*p < 0.05
Total	1.056 ± 0.068	1.075 ± 0.071	1.8	1.066 ± 0.069

Mean Cortical Index Analysis	50–60 min (1)	60–70 min (2)	% Increase (1) to (2)	50–70 min (average)
Male	1.035 ± 0.064	1.054 ± 0.065	1.9	1.044 ± 0.064	n.s
Female	1.066 ± 0.068	1.085 ± 0.072	1.7	1.076 ± 0.070	n.s

MMSE mini mental state examination, SUVR standardized uptake value ratio

* Correlation between SUVR of the group of 20–39 and that of 70–79 years old