Clinical Research Directory

Inclusion Criteria: (1) Patients who were confirmed to have cerebral hemorrhage through head CT imaging examination upon admission; (2) Those who completed head CT and CTA within 8 hours of onset and had a follow-up CT within 24 hours of admission; (3) With complete clinical data. Exclusion Criteria: (1) Patients who cannot complete CT and CTA within the prescribed time; (2) Patients with secondary cerebral hemorrhage due to cerebral vascular malformations, brain tumors, brain trauma, cerebral aneurysms, etc.; (3) Patients who have been taking oral anticoagulants for a long time or have blood system diseases; (4) Primary intraventricular hemorrhage.