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Magnetic resonance imaging and angiograph is the technique of choice in the diagnosis and follow-up of cerebral venous thrombosis: Thrombosis appears as an absence of flow void on spin echo images and lack of signal in angiographic technique s. The thrombus signal intensity is different on T1 and T2 spin echo weighted images and evolves according to hemoglobin degradation. Recognition of pitfalls and artifacts related to the different magnetic resonance imaging techniques employed is essent ial to interpret dural venous sinus thrombosis. In this paper the imaging of 27 patients with cerebral venous thromboses is reviewed. We describe the type of signal abnormalities, the different types of clot- and flow-related artifacts, and the indirect signs of cerebral venous thrombosis. |
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anticoagulant,treatment in CVD CAT scan,abnormal CAT scan,false negative cerebral venous infarction cerebral venous thrombosis dural sinus thrombosis heparin lateral sinus thrombosis misdiagnosis MRI MRI,abnormal MRI,angiography MRI,angiography,false negative MRI,artifacts MRI,CAT scan compared to MRI,false negative MRI,flow void,blood neurologic disease,diagnoses of prognosis review article risk factors treatment of neurologic disorder
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