Characteristics of 11 AVFs
| Characteristic | Summarya |
|---|---|
| Single hole with pouch | 10/11 (91%) |
| Lobe | |
| Frontal | 4/11 (36%) |
| Parietal | 0/11 (0%) |
| Occipital | 3/11 (27%) |
| Temporal | 3/11 (27%) |
| Cerebellum | 0/11 (0%) |
| Brain stem | 0/11 (0%) |
| Thalamus/basal ganglia | 1/11 (9%) |
| Location | |
| Deep | 1/11 (9%) |
| Subcortical | 0/11 (0%) |
| Superficial | 10/11 (91%) |
| Pial-to-pial collateralization | 3/11 (27%) |
| Moyamoya-type changes | 1/11 (9%) |
| Stenoses on arteries | 1/11 (9%) |
| Type, pial (vs choroidal) | 2/11 (18%) |
| Associated aneurysms | 2/11 (18%) |
| Multiple draining veins | 5/11 (45%) |
| Venous ectasia | 11/11 (100%) |
| Venous reflux | 0/11 (0%) |
| Pseudophlebitic pattern | 3/11 (27%) |
↵a Summary is the No. of observations with specified value over the total No. (and the percentage).