Researching AXIUM Coiling Experience and Recanalization (RACER)

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