1H-MRS findings
| n=6/6 | PML (mean (SD)) | Control subjects (mean (SD)) | p Value |
|---|---|---|---|
| STEAM-20: | |||
| Lipids (0.9)/Cr | 1.61 (0.42) | 0.23 (0.40) | 0.01 |
| Lactate+lipids / Cr | 1.31 (0.38) | 0 | (*) |
| NAA / Cr | 0.78 (0.21) | 1.37 (0.10) | 0.01 |
| Cho / Cr | 1.23 (0.19) | 0.92 (0.11) | 0.01 |
| mI / Cr | 0.76 (0.12) | 0.65 (0.07) | NS |
| PRESS-135: | |||
| Lactate/ Cr | 0.39 (0.17) | 0 | (*) |
| NAA/Cr | 0.77 (0.09) | 2.01 (0.22) | 0.01 |
| Cho/Cr | 1.53 (0.26) | 1.17 (0.22) | 0.04 |
Metabolite ratios calculated from the STEAM-20 and PRESS-135 spectra of parieto-occipital white matter of control subjects and patients with PML lesions. Values are expressed as mean (SD).
(*) Differences were qualitative.