Acute ischemic stroke Intracranial aneurysms Management Neurology Prevention Stroke Subarachnoid Hemorrhage balloon remodeling technique (BRT) capillary index score (CIS) intracranial endovascular intracranial stenosis intracranial vasospasms percutaneous transluminal angioplasty and stenting (PTAS) stent assisted coiling technique (SACT)