Earlier aneurysmal subarachnoid haemorrhage | Yes | 1 |
Location | Middle cerebral artery | 3 |
PCom artery/posterior circulation | 5 | |
>60 years old | 1 | |
Japanese | 1 | |
Finnish | 7 | |
Size | 1.0–2.9 mm | 0 |
3.0–4.9 mm | 4 | |
5.0–6.9 mm | 10 | |
7.9–9.0 mm | 13 | |
>10 mm | 22 | |
Irregular | Yes | 4 |
3-year risk of growth % | 5-year risk of growth% | |
<5 | 5 | 8 |
5–9 | 8 | 13 |
15–19 | 18 | 28 |
20–24 | 26 | 40 |
>25 | 43 | 61 |