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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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