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T1 and T2 Characteristics of the Different Types of Lesions
| Lesion | MRI characteristics | ||
|---|---|---|---|
| T2 (postmortem) | T1 | T1-Gd-DTPA | |
| Early active | Hyperintense | Hyperintense > isointense | Enhancing |
| Late active | Hyperintense | Isointense > hyperintense | Nonenhancing |
| Inactive | Hyperintense | Isointense > hyperintense | Nonenhancing |
| Remyelinating | Hyperintense | Isointense > hyperintense | Nonenhancing |
