. Author manuscript; available in PMC: 2010 Mar 1.

Published in final edited form as: Magn Reson Med. 2009 Mar;61(3):548–559. doi: 10.1002/mrm.21875

Table 1.

Average Metabolite Values (in Institutional Units) and Metabolite Ratios Over All Subjects, for Gray Matter and White Matter

	Frontal^a		Temporal^a		Parietal^a		Occipital^a

	Mean ± SE	R/L	Mean ± SE	R/L	Mean ± SE	R/L	Mean ± SE	R/L	Cerebellum (mean)^b
Gray matter									All voxels
NAA	4523 ± 59	0.99^*	4942 ± 83	0.91^*	4356 ± 65	0.98^*	4948 ± 75	0.98	5057
Cre	3145 ± 42	0.97^*	3429 ± 59	0.93^*	3071 ± 43	0.95^*	3461 ± 53	1.01	4496
Cho	679 ± 12	0.99	700 ± 14	0.96^*	492 ± 8	0.96^*	544 ± 13	1.10^*	1054
NAA/Cre	1.44 ± 0.01	1.02^*	1.40 ± 0.012	0.98^*	1.42 ± 0.01	0.97^*	1.40 ± 0.013	0.96^*	1.03
Cho/Cre	0.22 ± 0.002	1.02^*	0.20 ± 0.002	1.05^*	0.16 ± 0.002	1.02^**	0.15 ± 0.002	1.09^*	0.21
Cho/NAA	0.15 ± 0.002	1.01	0.14 ± 0.002	1.08^*	0.12 ± 0.002	1.05^*	0.11 ± 0.002	1.13^*	0.20
White matter
NAA	4857 ± 67	1.00	4941 ± 71	1.01	5053 ± 69	0.98^*	5165 ± 81	0.92^*	—
Cre	2936 ± 42	1.00	2903 ± 44	1.01	2985 ± 42	0.98^*	3048 ± 48	0.92^*	—
Cho	858 ± 15	0.97^*	838 ± 15	0.92^*	824 ± 14	0.96^*	671 ± 12	0.91^*	—
NAA/Cre	1.67 ± 0.014	1.00	1.75 ± 0.017	1.01	1.71 ± 0.015	1.00	1.73 ± 0.016	1.00	—
Cho/Cre	0.29 ± 0.003	0.98^*	0.29 ± 0.003	0.93^*	0.28 ± 0.003	0.98^*	0.22 ± 0.003	0.99	—
Cho/NAA	0.18 ± 0.002	0.97^*	0.17 ± 0.002	0.91^*	0.16 ± 0.002	0.98^*	0.13 ± 0.002	0.98	—

Mean values and standard errors (SE) for the right side of the atlas-defined brain region are given in the first column, followed by the ratio of the right brain to the left brain (R/L).

Mean values for the cerebellum, without separation into gray matter and white matter.

Significant difference between the left and the right sides for P < 0.01

^**

Significant difference between the left and the right sides for P < 0.05.