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The infiltration index for the different tissue types
| SD core or solid component | SD interface | Infiltration index | |
|---|---|---|---|
| Grade IV | 11.6 | 15.4 | 0.75 |
| Grade III | 12.2 | 13.0 | 0.94 |
| Grade II astrocytoma | 10.3 | 10.4 | 0.99 |
| Oligodendroglioma grade II | 13.5 | 14.1 | 0.96 |
| Pilocytic astrocytoma | 14.1 | 11.5 | 1.23 |
