Microfabricated Microcatheter Advantages in Middle Meningeal Artery Embolization: an Early Experience at a Single Center

Inclusion Criteria: * Age ≥ 18 years old * Patient or legally authorized representative (LAR) signs an informed consent form * Confirmed diagnosis of subacute or chronic subdural hematoma, defined as 50% or more chronic blood * Pre-morbid Modified Rankin Score of ≤ 3 Exclusion Criteria: * Age \< 18 years old * Potentially dangerous anatomic variations leading to increased procedural risk or unsafe access for MMA embolization * Unmanaged, uncontrolled bleeding disorders/blood diathesis * Presumed septic embolus, or suspicion of microbial superinfection * Contraindication to angiography * CT or MRI evidence of intra-cranial tumor or mass lesion