The goal of this clinical trial is to learn whether a coated flow diverter leads to fewer in-stent narrowings (in-stent stenosis) than an otherwise identical uncoated flow diverter when used to treat intracranial aneurysms in routine clinical care. The main questions it aims to answer are:
Does the coated flow diverter reduce the rate and severity of in-stent stenosis compared with the uncoated flow diverter?
Are there differences in angiographic aneurysm occlusion and procedure-related complications between the two devices?
Researchers will compare treatment with the coated flow diverter (Derivo 2 heal) to the uncoated flow diverter (Derivo 2).
Participants will:
Receive endovascular treatment of their intracranial aneurysm with one of the two flow diverters assigned by randomization
Receive standard antiplatelet medication and follow-up imaging as part of routine care