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Contrast-enhanced MR imaging of dural sinus thrombosis: demonstration of the thrombosis and collateral venous
S Takahashi1, S Higano, N Kurihara
1Department of Radiology, Tohoku University School of Medicine, Sendai, Japan.
Abstract:
In order to study the role of Gd-DTPA-enhanced MR imaging in dural sinus thrombosis, precontrast and postcontrast imaging using Gd-DTPA in three patients with clinically unsuspected dural sinus thrombosis was reviewed. Comparisons were made with cranial CT scanning and cerebral angiography. Compared to CT, the postcontrast T1-weighted images more clearly revealed thrombus in the dural sinuses as a nonenhanced central area of intermediate intensity (but not flow void) surrounded by an enhanced rim. MR imaging also demonstrated secondary changes, including the presence of collateral venous channels and venous infarction.
Insights
Gadolinium-DTPA enhanced Magnetic Resonance (MR) imaging effectively detects dural sinus thrombosis by visualizing thrombus as a distinct rim enhancement, outperforming CT scans. This advanced MR technique also reveals secondary complications like collateral venous channels and venous infarction.
Area of Science:
- Neuroradiology
- Neuroimaging
- Vascular Neurology
Background:
- Dural sinus thrombosis (DST) is a rare but serious condition.
- Early diagnosis is crucial for effective treatment and improved patient outcomes.
- Conventional imaging methods like CT scans may not always be definitive for DST.