Neuroform Atlas Stent for Intracranial Aneurysm Treatment

Inclusion Criteria: 1. Patient has an intracranial aneurysm for which an endovascular treatment requiring stent assisted intracranial aneurysm coiling has been decided by the site investigator 2. Patient or legal representative is willing and able to provide written informed consent 3. Patient is willing able to comply with scheduled visits and examinations per protocol requirements Exclusion Criteria: 1. Patient that is younger than 18 years old at the time of entry into the study 2. Patient with mRS \> 3 3. Patient has a saccular ruptured aneurysm \< 3 months 4. Patient has a fusiform aneurysm 5. Treatment of several aneurysms during the same procedure, except adjacent aneurysms treated with the same stent 6. Planned treatment of other aneurysm in the same vascular territory within the study time period 7. Patient with severe vasospasm that does not respond to pharmacological therapy 8. Aneurysm associated with an arteriovenous malformation, or any other lesion that could lead to hemorrhagic complications 9. Pregnant woman or child feeding 10. Any condition which will not allow the patient to comply with the necessary follow-up for this study (medical condition, patient leaving abroad) 11. Patient with confirmed allergy to nickel titanium (Nitinol) 12. Patient in whom antiplatelet and/or anticoagulation therapy is contraindicate 13. Patient for whom angiography and other examinations show that access to the target cerebral aneurysm by the stent may be impossible because of anatomical features 14. Patient for whom angiography and MRA/MRI is contraindicated 15. Patient with target aneurysm previously treated with a stent -