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Figure 9a. Deep cerebral venous thrombosis in a 41-year-old woman. (a) Axial unenhanced CT image shows an area of low attenuation in both thalami (*) associated with increased attenuation in the straight sinus (arrow) and internal cerebral veins (arrowheads). Note the hemorrhage in the left choroid plexus. (b) Axial contrast-enhanced CT image shows filling defects in the straight sinus (arrow) and internal cerebral veins (white arrowheads), an appearance consistent with thrombosis. Compare this appearance with the normally enhancing superior sagittal sinus (black arrowhead).
