MRI results based on 23 case-matched pairs
| Cognitive domain | Test | Surgical group, n = 23 | Endovascular group, n = 23 |
|---|---|---|---|
| * p < 0.05. | |||
| † p < 0.001. | |||
| Infarction | Large, major vessel | 8 | 9 |
| Small single | 7 | 2 | |
| Small multiple | 5 | 4 | |
| Total (may have more than one type of infarct) | 20 | 13* | |
| Surgical damage | Focal encephalomalacia | 19 | 0† |
| White matter hyperintensities | Normal for age | 4 | 5 |
| Excessive for age | 11 | 14 | |