Inclusion Criteria:

• Patient or patient's legally authorized representative has signed and dated an Informed Consent Form
• Must be at least 18 years of age
• Aneurysm location, angio-architecture, morphology, or medical condition, is considered by the neurosurgical / interventional team to be at very high risk for management by traditional operative techniques, or aneurysm is considered to be inoperable
• Patient is willing to conduct follow-up visits

Exclusion Criteria:

• Aneurysm was previously treated
• Patient has a cerebral aneurysm with a location, angioarchitecture or morphology that presents an unacceptable risk of morbidity due to the Study procedures
• Patient is participating in another clinical research Study
• Patient has a medical, social or psychological condition, which precludes the patient from receiving Study required treatment, evaluation, procedures and follow-up
• Female patient is pregnant or breast-feeding