Prospective, Open-Label, Multi-Center ProceDural Data CollectIon Case Registry on NeVa VS for CerebraL VAsospasm ManagemenT in Post SAH PatiEnts (The DILATE Registry)

Inclusion Criteria: 1. Age ≥22 2. Symptomatic cerebral vasospasm secondary to aneurysmal subarachnoid hemorrhage (aSAH) in the internal carotid artery (ICA), middle cerebral artery (MCA), anterior cerebral artery (ACA), posterior cerebral artery (PCA), or basilar artery (BA) 3. Vessel dilation procedure was performed with the NeVa VS 4. Subject or legal representative is able and willing to give informed consent within 3 days (72 hours) post-index procedure Exclusion Criteria: * None