Cerebral venous sinus thrombosis

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Author: Mikael Häggström [notes 1]


Choice of modality

In suspected cerebral venous sinus thrombosis (CVST), head CT venography (CTV), head MRI venography (MRV), and digital subtraction angiography (DSA) have similar accuracies in the diagnosis.[1] Main advantages of MRI include rapid image taking and not being contraindicated in patients with for example a pacemaker. MRV, on the other hand, has a greater sensitivity in detecting parenchymal lesions.[1] A study from India has suggested CTV as an initial investigation of suspected CVST, with MRV being the next step in patients with equivocal findings on the CTV.[2]


On CTV, a CVST is seen as a contrast filling defect:


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  1. 1.0 1.1 Mahesh R Patel. Brain Imaging in Venous Sinus Thrombosis. Updated: Feb 25, 2018
  2. Issar P, Chinna S, Issar SK (2017). "Evaluation of Cerebral Venous Thrombosis by CT, MRI and MR Venography. ". J Assoc Physicians India 65 (11): 16-21. PMID 29322704. Archived from the original. .