Table 1:

NAA/Cr and Cho/Cr ratios before and after surgery^a

	Before Surgery	After Surgery	P Value
NAA/Cr ratio
Ipsilateral hemisphere	1.654 ± 0.195	1.660 ± 0.228	.2819
Contralateral hemisphere	1.720 ± 0.177	1.718 ± 0.190	.9694
Cho/Cr ratio
Ipsilateral hemisphere	0.895 ± 0.109	0.888 ± 0.104	.3132
Contralateral hemisphere	0.868 ± 0.093	0.867 ± 0.095	.8760

^aValues are expressed as means.