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Cerebral venous angiomas: MR findings
V E Toro1, C A Geyer, J L Sherman
1Department of Radiology, Walter Reed Army Medical Center, Washington, DC.
Journal of Computer Assisted Tomography
|November 1, 1988
Summary
Magnetic resonance imaging (MRI) is superior to CT scans for identifying cerebral venous angiomas. MRI revealed characteristic stellate patterns and centrifugal venous drainage, aiding in diagnosis.
Area of Science:
- Neuroradiology
- Neuroimaging
- Vascular Neurology
Background:
- Cerebral venous angiomas are congenital vascular malformations.
- Diagnosis often relies on imaging modalities like CT and angiography.
- Previous imaging techniques have limitations in fully characterizing these lesions.
Purpose of the Study:
- To evaluate the efficacy of magnetic resonance (MR) imaging in diagnosing cerebral venous angiomas.
- To compare the diagnostic capabilities of MR imaging versus CT and angiography.
- To identify characteristic imaging features of cerebral venous angiomas on MR.
Main Methods:
- Seven patients with suspected cerebral venous angiomas underwent MR imaging.
- Comparison with prior CT and/or angiography findings.
- Utilized T1- and T2-weighted pulse sequences, and a field echo sequence.
Main Results:
- Magnetic resonance imaging demonstrated superior lesion identification compared to CT.
- Characteristic stellate appearance and centrifugal transcortical venous drainage were observed in all cases.
- Flow voids were consistently identified on both T1- and T2-weighted sequences.
Conclusions:
- Magnetic resonance imaging is a highly effective modality for diagnosing cerebral venous angiomas.
- The characteristic stellate configuration and centrifugal venous drainage are key diagnostic markers.
- MR imaging provides detailed anatomical and flow information crucial for understanding these malformations.