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Figure 1: Diffusion-weighted MRI showed diffusion restriction with high signal intensity (HI) of the right parietal cortex on ADC map (arrows), suggesting vasogenic edema (a-d). Dilatation of cortical veins and superior sagittal sinus on gradient echo images (arrows) (e, f). T2- and FLAIR MRI showed HI over the left frontal and right parietal cortex (arrows) (g, h). Gadolinium-enhanced T1-weighted MRI showed the "empty delta sign" (arrows) (i, j). MRV revealed the absence of the superior sagittal sinus, straight sinus, and right transverse sinus, indicating cerebral venous thrombosis (k, l)

Figure 1: Diffusion-weighted MRI showed diffusion restriction with high signal intensity (HI) of the right parietal cortex on ADC map (arrows), suggesting vasogenic edema (a-d). Dilatation of cortical veins and superior sagittal sinus on gradient echo images (arrows) (e, f). T2- and FLAIR MRI showed HI over the left frontal and right parietal cortex (arrows) (g, h). Gadolinium-enhanced T1-weighted MRI showed the