Table 1:
Comparison of the stage of thrombosis with the status of hemoglobin and their resultant T1 and T2 characteristics.
| Stage of thrombosis & approximate duration | Status of hemoglobin |
Magnetism | Tl shortening (Hyperintense) |
T2 & T2* Shortening (Hypointense) |
|---|---|---|---|---|
| Acute (0-3 days) | DeoxyHb | T2 Paramagnetic |
__ | +++ |
| Early subacute (<l week) |
Intracellular MetHb |
T1 &T2 Paramagnetic |
+++ | ++++ |
| Late subacute (1-2 weeks) |
Extracellular MetHb |
T1 Paramagnetic |
++++ | __ |
| Chronic (>2 weeks) | Hemosiderin | T2 Paramagnetic |
__ | ++++ |