Aneurysm characteristics
No of aneurysms | % | |
---|---|---|
Total No of aneurysms | 10 845 | 100 |
Location of aneurysms | ||
Anterior circulation aneurysms | 6766 | 62.4 |
ICA | 2732 | 25.2 |
MCA | 2552 | 23.5 |
ACA | 1205 | 11.1 |
Posterior circulation aneurysms | 1014 | 9.3 |
Basilar tip | 318 | 2.9 |
All others | 243 | 2.2 |
Location not reported | 3065 | 28.3 |
Size (mm)* | ||
<10 | 3771 | 34.8 |
10–24 | 1704 | 15.7 |
≥25 | 476 | 4.4 |
Not reported | 4894 | 45.1 |
Other aneurysm characteristics | ||
Thrombosed | 76 | 0.7 |
Calcified | 30 | 0.3 |
*Regrouped size: aneurysms 7–12 mm were classified as small, 6–16 mm as large.
ACA, anterior cerebral artery; ICA, internal carotid artery; MCA, middle cerebral artery.