This study looks at using special devices called flow-diverting stents to treat cerebral aneurysms, which are bulges in brain blood vessels. These stents, named p64MW HPC and p48MW HPC, help divert blood flow away from the aneurysm to prevent it from bursting. Aneurysms can be dangerous if they rupture, leading to bleeding inside the brain. The study will use these stents with a special coating to reduce the chance of blood clots, known as thromboembolic complications. This is an observational study in several hospitals in Spain and will last for 12 months. Participants must be over 18 and have signed consent.

• Study lasts for 12 months with follow-up visits.
• Involves routine clinical practice, no new experimental treatment.
• Must be over 18 and not pregnant or breastfeeding.