TABLE 2.

Mean Cr/NAA values, and for patients % fraction of abnormality

		Controls		Patients
Parcel	L/R	Young (n= 10)	Old (n= 10)	Good O/C	Poor O/C
Total		0.58±0.02	0.63±0.03	0.63±0.06	0.66±0.08
				1.01±0.06	1.00±0.06
		0.07±0.07%	0.14±0.11%	1.38±4.75%	3.07±6.56%
Ant Quad	L	0.56±0.02	0.61±0.04	0.61±0.06	0.64±0.08
				1.28±0.38	1.04±0.09
				0.38±0.66%	1.09±2.58%
	R	0.06±0.23%	0.08±0.18%	0.62±0.07	0.67±0.10
				0.99±0.04	1.02±0.07
				0.85±1.93%	2.91±4.24%
Post Quad	L	0.58±0.03	0.62±0.04	0.60±0.05	0.65±0.07
				0.99±0.01	1.03±0.09
				0.08±0.23%	1.84±4.45%
	R	0.05±0.07%	0.04±0.14%	0.62±0.06	0.69±0.12
				1.16±0.32	1.05±0.04
				0.37±1.11%	3.78±7.03%
Temporal	L	0.61±0.03	0.65±0.05	0.66±0.08	0.69±0.10
				1.18±0.08	1.06±0.09
				2.58±7.18%	1.11±2.82%
	R	0.00%	0.08±0.23%	0.70±0.10	0.74±0.11
				1.18±0.15	1.09±0.07
				3.51±9.99%	5.80±10.24%
Limbic	L	0.64±0.04	0.70±0.06	0.69±0.07	0.72±0.10
				1.11±0.12	1.12±0.10
				1.37±2.25%	2.59±4.38%
	R	0.04±0.16%	0.73±1.02%	0.70±0.11	0.75±0.10
				1.09±0.10	1.19±0.17
				1.87±4.84%	5.34±10.58%

In the control columns, all parcels (combined left, right) from the young group are significantly different from the old group, all below p < 0.005. The fraction of limbic voxels that are abnormal is significantly larger in the old versus young group, 0.73 ± 1.02 versus 0.04 ± 0.16, p < 0.02. In the controls, each field has two entries (mean ± standard deviation): top, mean Cr/NAA over entire parcel; bottom, percentage of voxels that are scored as abnormal. In the patient columns, each field has three entries (mean and standard deviation): top, mean Cr/NAA over entire parcel; middle, mean Cr/NAA over the abnormal voxels only; bottom, percentage of abnormal voxels. The patient data are separated according to outcome: good, ILAE I, II; poor, ILAE III-VI.