Association between age of intracranial haemorrhage and changes in T1- and T2 signals after injury
| Age of haemorrhage | T1-weighted images | T2-weighted images | |
|---|---|---|---|
| Acute | < 3 days | Iso-to mildly hyperintense | Iso-to hypointense |
| Subacute | 4-14 days | Hyperintense | Hypointense centre, hyperintense periphery |
| Chronic | >14 days | Hyperintense | Hyperintense |