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Table 4: Comparison of mean metabolite levels within abnormal perfusion and T2h regions from voxels across all patients of each grade
Region Choline Creatine
Grade III Grade IV Grade III Grade IV
aPH 16.9 ± 9.6 16.5 ± 12.1^* 10.7 ± 5.8 7.6 ± 5.9^**
aRec 17.9 ± 11.2 16.0 ± 9.4 8.8 ± 5.0 8.2 ± 4.8
aPH+aRec 20.6 ± 12.8 19.0 ± 11.7 11.2 ± 6.9 8.4 ± 5.4^*
T2h 18.9 ± 10.7 13.6 ± 8.7 11.0 ± 5.6 8.5 ± 5.5
Note:—aPh indicates the region of abnormal peak height with normal recovery; aRec, the region of abnormal recovery with normal peak height.
* P < .02.
** P < .001.

Region	Choline		Creatine
Region	Grade III	Grade IV	Grade III	Grade IV
aPH	16.9 ± 9.6	16.5 ± 12.1^*	10.7 ± 5.8	7.6 ± 5.9^**
aRec	17.9 ± 11.2	16.0 ± 9.4	8.8 ± 5.0	8.2 ± 4.8
aPH+aRec	20.6 ± 12.8	19.0 ± 11.7	11.2 ± 6.9	8.4 ± 5.4^*
T2h	18.9 ± 10.7	13.6 ± 8.7	11.0 ± 5.6	8.5 ± 5.5