Frequency of focal lesions
| Total Lesions | Range | Median + SD | |
|---|---|---|---|
| T1 | 326 | 0–31 | 2.5 + 6.8* |
| T2 hypo | 168.5 | 0–12 | 1.0 + 3.6* |
| T2 hyper | 65 | 0–10 | 0 + 2.25* |
| T2* | 608 | 0–61 | 3.75 + 13.9 |
Note.—T1 indicates T1-weighted MR imaging; T2 hypo, T2-weighted MR imaging hypointensities; T2 hyper, T2-weighted MR imaging hyperintensities; T2*, T2*-weighted MR imaging.