Treatment and imaging outcome of patients
| Characteristics | Dolichoectasia | Fusiform | Transitional |
|---|---|---|---|
| Mean no of FDS (range) | |||
| Vertebral | N/A | 2.8 (1–3) | N/A |
| Basilar | 4.5 (2–6) | 8.3 (1–19) | 4 (3–5) |
| Vertebrobasilar | 5 (4–6) | 3.6 (1–7) | 8.2 (1–18) |
| Vertebrobasilar-cerebral | N/A | N/A | 5 (2–8) |
| Basilar-cerebral | N/A | 1 (1) | N/A |
| Average no of treatment episodes (range) | |||
| Vertebral | N/A | 1.35 (1–3) | N/A |
| Basilar | 1 (1) | 3.66 (1–5) | 1 (1) |
| Vertebrobasilar | 1.5 (1–2) | 1.66 (1–2) | 1.86 (1–5) |
| Vertebrobasilar-cerebral | N/A | N/A | 2 (1–3) |
| Basilar-cerebral | N/A | 1 (1) | N/A |
| Angiographic follow-up status | |||
| Minor remnant/filling | 1 | 3 | 7 |
| Major remnant/filling | 0 | 0 | 5 |
| Occluded | 4 | 18 | 5 |
| Unchanged | 0 | 1 | 2 |
| 1 no follow-up available | 1 no follow-up available, 1 died | 1 no follow-up available, 8 died | |
| MRI follow-up of those without angiographic occlusion (n=18) | 1 | 4 | 13 |
| Stable | 1 | 1 | 3 |
| New infarcts | 0 | 0 | 3 |
| Increased intra-aneurysmal thrombus | 0 | 3 | 6 |
| Increased mass effect | 0 | 0 | 3 |
| Decrease in maximum diameter of aneurysm | 0 | 3 | 1 |
| No change in maximum diameter of aneurysm | 0 | 1 | 8 |
| Increase in maximum diameter of aneurysm | 0 | 0 | 4 |
FDS, flow-diverting stent.