Clinical Research Directory

Inclusion criteria: * Age ≥ 18 * Patients experiencing unilateral or bilateral non-acute subdural hematoma confirmed by CT imaging. Acute on Chronic or mixed density hematoma allowed. * A clinical decision has been made to use coiling and/or embolics as treatment, with or without surgical debridement, independently as per standard of care and prior to enrollment in the study. * Signed informed consent obtained by patient or Legal Authorized Representative (LAR) Exclusion criteria: * Primary acute SDH * Prior MMAE in target territory * Premorbid mRS \> 3 * Common carotid stenosis \>70% or prior carotid stent placement * Significant medical contraindication to angiography (kidney failure/disease) * Anatomical variations that would make MMA embolization difficult or unsafe * Currently participating in an investigational (drug, device, etc.) clinical trial that may confound study endpoints * Pregnancy * Life expectancy ≤ 1 year