Table 2.
Mean and standard deviation for the voxel tissue content, metabolite absolute values, metabolite ratio to creatine, and the lithium measurements
| Voxel tissue content | Mean (%) |
Standard deviation (%) |
| White matter | 14.37 | 2.97 |
| Gray matter | 71.31 | 5.79 |
| Cerebrospinal fluid | 14.31 | 6.72 |
|
Metabolite absolute values |
Mean (IU) |
Standard deviation (IU) |
| N-acetyl aspartate (NAA) | 8.81 | 3.79 |
| myo-Ino (n = 8) | 5.18 | 1.50 |
|
Metabolite ratio to creatine |
Mean |
Standard deviation |
| NAA/Cr | 1.11 | 0.18 |
| myo-Ino/Cr (n = 8) | 0.72 | 0.20 |
| Lithium measurements |
Mean (mEq/L) |
Standard deviation (mEq/L) |
| Serum | 0.67 | 0.19 |
| Brain | 0.22 | 0.25 |
| Mean |
Standard deviation |
|
| Brain-to-serum ratio | 0.33 | 0.38 |
IU = Institutional Units.