Flow DiversionMAXimizing Flow Diversion Effect On the Treatment of Large Intracranial Aneurysms With Embolization Devices

Inclusion Criteria:

1. Subject with unruptured, large (≥8mm) saccular aneurysm(s) located in the anterior intracranial circulation and suitable for an endovascular treatment with a Flow Diverter Stent.
2. Subject has signed an institutionally approved research informed consent form.
3. Subject ≥ 18 years old.

Exclusion Criteria:

1. Subject with non-saccular brain aneurysm (s) such as:- dissecting; fusiform; atherosclerotic; mycotic; bifurcational.
2. Subject underwent a prior target brain aneurysm treatment with either endovascular (stenting, coiling) or surgical (clipping) techniques.
3. The endovascular treatment of subject's target aneurysm(s) was assisted with coils or intracranial stents (non-FDS) before the AneurysmFlow calculations.
4. Subject with partially thrombosed or recanalized target brain aneurysm(s).
5. Subject had prior significant or severe allergy to intra-arterial contrast medium uncontrolled by pre-procedure medications.
6. Subject with severe kidney disease (e-GFR < 60).
7. Subject is not willing (or not able) to attend post FDS insertion follow up clinic visits requiring DSA, head MRI or CTA imaging.