Mechanical Intracranial Artery DilAtation Using Stent-retriever for Cerebral Vasospasm

"I. Procedure \& Intervention~1. Assess the presence and degree of cerebral vasospasm of the target vessel through cerebral angiography before the procedure.~2. Solitaire-X stent types are selected~3. During the stent-angioplasty, IA nimodipine was also infused.~4. Retrieve Solitaire-X after maintaining deployment for 3 minutes.~5. Additional procedures are determined through immediate post-procedure and 15-minute delayed cerebral angiography."