Dural sinus thrombosis – Chronic

MRI Brain

Axial T2

Axial FLAIR

Sagittal T1

2 D TOF MR Venogram

This MRI study shows abnormal heterogeneous T2 high signals in the region of superior sagittal sinus and right lateral sinus, loss of normal T2 flow voids implies to thrombosis. Sagittal T1 for cross sectional view of sinus, sinus is not very bulky iso intense to adjacent parenchyma.
Eccentric T2 flow voids in the region of sinuses are the partially recanlised channels, which show poor flow related signals on 2D TOF MR Venogram implies to chronic thrombosis.

Impression:

Chronic thrombosis of superior sagittal and right transverse sigmoid sinus with partial recanalization.
No venous infarct.

Dural sinus thrombosis – Sub acute

Axial flair images of brain show abnormal high signal in the region of superior sagittal and left transverse sigmoid sinus with loss of normal T2 flow voids, corresponding portion of dural venous sinuses show no flow related signal on non contrast 2D TOF MR Venogram implies to thrombosis.
T1 bright signal of the thrombus attributed to Meth Hb – a sub acute stage blood degradation product implies to sub acute stage thrombosis.


Impression: Thrombosed superior sagittal and left transverse sigmoid sinus - sub acute stage thrombosis.