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MRI in cerebral venous thrombosis
D Dormont1, R Anxionnat, S Evrard
1Département de Neuroradiologie, Groupe Hospitalier Pitié-Salpêtrière, Paris.
Journal of Neuroradiology = Journal De Neuroradiologie
|April 1, 1994
Summary
Magnetic resonance imaging (MRI) effectively diagnoses cerebral venous thrombosis (CVT), identifies associated brain lesions, and monitors treatment response. However, MRI may miss subtle cases, especially those involving cortical veins.
Area of Science:
- Neuroradiology
- Neuroimaging
Background:
- Cerebral venous thrombosis (CVT) is a rare but serious condition.
- Accurate and timely diagnosis is crucial for effective management.
Purpose of the Study:
- To evaluate the utility of MRI in diagnosing CVT.
- To characterize MRI findings in different stages of CVT.
- To assess MRI's role in monitoring CVT treatment.
Main Methods:
- Retrospective analysis of MRI scans from 53 patients with confirmed CVT.
- Classification of signal abnormalities in thrombosed sinuses into early, intermediate, and late stages.
- Correlation of MRI findings with clinical outcomes and treatment response.
Main Results:
- MRI detected signal abnormalities in 51 out of 53 CVT cases.
- Characteristic signal changes were identified for early, intermediate, and late stages of CVT.
- Venous infarction was present in 26 patients, with 20 cases showing hemorrhagic lesions.
- MRI demonstrated partial or complete sinus recanalization in 14 out of 15 followed cases.
- MRI sensitivity was lower than arteriography for CVT involving cortical veins.
Conclusions:
- MRI is a valuable non-invasive tool for diagnosing CVT, characterizing its stages, and evaluating parenchymal involvement.
- MRI facilitates monitoring of CVT treatment, including recanalization of occluded sinuses.
- Arteriography remains more sensitive for detecting CVT limited to cortical veins.