Characterization of residual AVMs using ASL-MRA and CE-MRA compared with DSA
| Observer 1 | Observer 2 | |||
|---|---|---|---|---|
| DSA | MRA | DSA | MRA | |
| SMS | ||||
| Size | ||||
| <3 cm | 7 | 7 | 7 | 7 |
| 3–6 cm | 2 | 2 | 2 | 2 |
| >6 cm | – | – | – | – |
| Drainage | ||||
| Superficial only | 5 | 5 | 5 | 5 |
| Deep | 4 | 4 | 4 | 4 |
| Eloquence | ||||
| Noneloquent | 5 | 4 | 3 | 4 |
| Eloquent | 4 | 5 | 6 | 5 |
| Feeding arteries | 14 | 14 | 17 | 15 |
| Draining veins | 13 | 13 | 15 | 12 |
Note:—indicates non-applicable; SMS, Spetzler-Martin Score.