Clinical Research Directory

Inclusion Criteria: 1. Age≥18 years 2. had completed a CT examination within 24 h of disease onset; 3. had a hemorrhage that was located in the brain parenchyma, including the basal ganglia, thalamus,brain lobes, brainstem, and cerebellum. Exclusion Criteria: 1. had secondary ICH caused by brain trauma,cerebrovascular malformations, aneurysms, and tumors; 2. had ischemic cerebral infarction hemorrhagic transformation; 3. had undergone surgical treatment (e.g.hematoma removal or puncture drainage) before the CT examination; 4. had images of poor quality that could notbe accurately evaluated; 5. had a hematoma withborders that could not be delineated, thus precluding delineation of the region of interest (ROI).