Table 2:

ADCs of metabolites and water in the left centrum semiovale of healthy volunteers and patients with ischemia at different ages

Subject	Age (yr)	No.	ADC (mean ± SD, ×10⁻³ mm²/s)
Subject	Age (yr)	No.	NAA	Cr	Cho	Water
Healthy young volunteers	21–31	26	0.26 ± 0.06^a	0.25 ± 0.06^a	0.23 ± 0.05^a	0.78 ± 0.02
Healthy older volunteers	54–78	17	0.19 ± 0.03	0.17 ± 0.03	0.17 ± 0.04	0.79 ± 0.04
Patients with acute cerebral ischemia	52–77	7	0.11 ± 0.03^b	0.10 ± 0.03^b	0.09 ± 0.02^b	0.54 ± 0.10
Patients with subacute cerebral ischemia	53–74	12	0.21 ± 0.03	0.19 ± 0.03	0.23 ± 0.04^c	0.62 ± 0.08

↵a Significantly higher in the healthy young volunteer group compared with the healthy older volunteer group (P < .01).
↵b Significantly lower in the acute cerebral ischemia patient group compared with the healthy older volunteer group (P < .05).
↵c Significantly higher in the subacute cerebral ischemia patient group compared with the healthy older volunteer group (P < .05).