CT, MRI, and angiography of venous angiomas: a comparative study.

摘要: Seventeen venous angiomas in 16 patients were evaluated radiologically at the Montreal Neurological Hospital. Radiologic investigations included contrast-enhanced computed tomograms (CECT) 15 patients, cerebral angiograms with a long phase study 15, and magnetic resonance (MR) imaging spin-echo pulse sequence technique six. CECT revealed abnormalities including six nodular nonspecific enhancing lesions nine enhanced draining veins, whereas plain CT intracerebral hemorrhages four calcification one. All showed characteristic pattern of consisting medullary veins converging to large vein during late phase. examined by MR abnormal vascular structures; parenchymal present two patients. In five angiomas, demonstrated as echo-void curvilinear structures. increased signal from echo delay sequences was suggestive slow flow rate. Demonstration nature malformation may, future, obviate need for angiography.