J Korean Radiol Soc.  1994 Oct;31(4):627-632.

MR Findings of Carebrai Venous Sinus Thrombosis

• Han MH
• Choi CG
• Chang K
• Lim MK

Abstract

PURPOSE
To describe MR findings of cerebral venous sinus thrombosis.
MATERIALS AND METHODS
We reviewed 11 MR images of six patients with cerebral venous sinus thrombosis. The MR images were retrospectively analyzed in terms of location and signal intensity of the thrombi, parenchymal lesions such as hemorrhage and edema, and changes in follow-up study obtained in 4 patients.
RESULTS
The thrombus in venous sinus was visualized on MRI in all six patients. The most frequently involved sites were superior sagittal sinus(n=4) and left transvere sinus(n=4). Signal intensity of the thrombus was isointense or hyperintense on both T1 - and T2-weighted images with loss of normal signal void of the sinus on all sequences in all patients. Parenchymal lesion was present in five of six cases, manifested as local hemorrhage in three and edema in three cases(one case overlapped). Local edema seen in three patients was completely resolved on follow-up study of seven to 29 days intervals.
CONCLUSION
It is concluded that iso- or high signal intensity with loss of signal void in venous sinus is virtually diagnostic of venous sinus thromosis. If there are local parenchymal lesions such as hemorrhage and/or edema of unknown causes, cerebral venous sinus thrombosis should be included in differential diagnosis.

MeSH Terms

Diagnosis, Differential
Edema
Follow-Up Studies
Hemorrhage
Humans
Magnetic Resonance Imaging
Retrospective Studies
Sinus Thrombosis, Intracranial*
Thrombosis