Inclusion Criteria- Aged ≥18 years
- Acute stroke syndrome that is due to presumed spontaneous ICH, confirmed by clinical history and a CT scan without/without contrast, and if an CT angiogram is also undertaken as part of routine care.
- Presentation to hospital within 6 hours of stroke onset.
Exclusion Criteria- Definite evidence that the ICH is secondary to a structural abnormality in the brain (eg an AVM, intracranial aneurysm, tumour, trauma, or previous cerebral infarction) or previous thrombolysis.
- A high likelihood that the patient will not adhere to the study treatment and follow-up regimen. In each case, the decision about the patient's eligibility will be based on the attending clinician's interpretation of the above eligibility criteria.