Table 2. NAA, Cr and Cho Absolute Concentrations (ppm) and Ratios for Non-Enhancing Lesions in Each Multiple Sclerosis Subtype and P Values of Between Group Comparisons .
| RRMS-Lesion* | PPMS-Lesion* | P Value | |
|---|---|---|---|
| NAA/Cr | 1.71±1.4 | 0.91±0.55 | 0.03 |
| NAA/Cho | 4.27±1.84 | 4.38±2.57 | 0.84 |
| NAA | 8.45±0.88 | 7.87±0.7 | 0.08 |
| Cho | 1.73±0.35 | 2±0.5 | 0.12 |
| Cr | 5.21±0.75 | 6±0.57 | 0.008 |
Abbreviations: Cr, Creatine; Cho, Choline; NAA, N Acetyl Aspartate; PPMS, Primary Progressive Multiple Sclerosis; RRMS, Relapsing Remitting Multiple Sclerosis *Results are expressed as mean ± standard deviation.