Inclusion criteria | |
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a. | At least one documented subarachnoid aneurysm, never ruptured |
b. | Patient aged 18 or older |
c. | Life expectancy more than 10 years |
Exclusion criteria | |
a. | Patients with recent (less than 3 months) intracranial haemorrhage |
b. | Lesion characteristics unsuitable for endovascular treatment |
c. | Patients with a single extradural aneurysm |
d. | Aneurysms <3 mm or giant aneurysms (≥25 mm) |
e. | Patients with a poor outcome (Rankin scale ≥3) after the rupture, surgical or endovascular treatment of another aneurysm |
f. | Patients with incompletely treated aneurysms that have previously ruptured |
g. | Patients with associated arteriovenous malformations |
h. | Patients with new severe progressive symptoms in relationship with the aneurysm (sudden onset, severe persisting headaches suggestive of impending rupture, third-nerve palsy, mass-effect) |
i. | Patients with previous intracranial haemorrhage from unknown aetiology |
j. | Patients with multiple unruptured aneurysms in whom surgical clipping of one or many aneurysms is planned in addition to endovascular management |
k. | Patients with absolute contraindications to anaesthesia, endovascular treatment, or administration of contrast material, including low-osmolarity agents or gadolinium |
l. | Pregnant patients |
m. | Patients unable to give informed consent |