Fig. 13
From: Neuroimaging of acute and chronic unilateral and bilateral thalamic lesions
Non-contrast CT shows high attenuation of the internal cerebral veins and the vein of Gallen (arrows in a). CTV illustrates filling defect in the inferior sagittal sinus, vein of Gallen, and straight sinus (arrows in b). Both thalami (asterisk) are hypodense on CT (a), hyperintense on T2 (c) and FLAIR (d), hypointense on T1 (g), and show no enhancement (h). There is no diffusion restriction (e, f) reflecting vasogenic oedema secondary to venous thrombosis