Evolution of signal intensity in parenchymal haemorrhage41
| Age of haemorrhage | T1 weighted imaging | T2 weighted imaging |
|---|---|---|
| 2 days | Not seen/high signal intensity rim | Low signal intensity |
| 3–10 days | Not seen/high signal intensity | Low signal intensity (with high signal intensity periphery) |
| 10–21 days | High signal intensity | High signal intensity |
| 3–6 weeks | High signal intensity | High signal intensity (with low signal intensity periphery) |
| 6 weeks – 10 months | Not seen/minimal high signal intensity | Not seen/low signal intensity |
| 10–22 months | Not seen | Minimal low signal intensity/not seen |