Figure 1 Head CT at admission showed low-density in bilateral thalamus and basal ganglia area (thick arrows indicate), and high-density in great cerebral vein and bilateral internal cerebral venous area (thin arrows indicate). Basal ganglia level (Panel 1a). Lateral ventricle body level (Panel 1b).

Figure 2 Head MRI findings at admission Axial T₁WI showed hypointensity involving bilateral cerebral peduncle, bilateral thalamus, left basal ganglia, around left lateral ventricle and corpus callosum (arrows indicate, Panel 2a). Axial T₂WI showed hyperintensity involving bilateral cerebral peduncle, bilateral thalamus, left basal ganglia, around left lateral ventricle and corpus callosum (arrows indicate, Panel 2b).

Figure 3 Head vein MRBTI at admission showed hyperintensity involving great cerebral vein, bilateral internal cerebral veins, inferior sagittal sinus, straight sinus (arrows indicate) Axial MRBTI (Panel 3a). Sagittal MRBTI (panel 3b).

Figure 4 Head and neck enhanced MRV findings at admission Lateral head enhanced MRV showed no visualization of great cerebral vein, bilateral internal cerebral veins, straight sinus (arrow indicates, Panel 4a). Frontal neck enhanced MRV showed no visualization of the upper part of the right jugular vein (arrow indicates, Panel 4b).

Figure 5 Head MRI at 16th day of admission showed the range of abnormal signals of bilateral thalamus, left basal ganglia, around left lateral ventricle and corpus callosum were reduced. Axial T₁WI(Panel 5a).  Axial T₂WI(Panel 5b).

Figure 6 Dynamic changes of head CT during hospitalization Axial CT showed high-density shadow in the left occipital cortex at the 16th day of admission (Panel 6a). Axial CT showed high-density shadow of the left occipital cortex and the surrounding low-density edema band at the 23th day of admission was larger than before (Panel 6b). Axial CT showed high-density shadow of the left occipital cortex at the 31th day of admission was lower than before (Panel 6c). Axial CT showed high-density shadow of the left occipital cortex was reduced at the 37th day of admission (Panel 6d).

Figure 7 Head vein MRBTI at 6-month after discharge showed the range of abnormal signals of bilateral thalamus, inferior sagittal sinus, great cerebral vein, bilateral internal cerebral veins were reduced. Axial MRBTI (Panel 7a). Sagittal MRBTI (Panel 7b).

Figure 8 Head and neck enhanced MRV at 6-month after discharge showed the straight sinus, great cerebral vein and bilateral internal cerebral veins were clearer than before. Lateral head enhanced MRV (Panel 8a). Frontal neck enhanced MRV (Panel 8b).