PMC2964787_01
Noncontrast transverse CT image of the brain showing venous infarcts with hemorrhage in the bilateral parietal regions of the cerebral hemispheres
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CT now showed hemorrhagic infarcts in the bilateral high parietal regions [Figure 1]; the infarcts were larger on the left side, with a mass effect and midline shift toward the right [Figure 2]. Contrast-enhanced CT showed hypodense attenuation of the superior sagittal sinus posteriorly with peripheral enhancement (called the empty delta sign), Which was suggestive of sinus thrombosis [Figure 2].
Contrast-enhanced transverse CT image showing the empty delta sign in the superior sagittal sinus posteriorly, with a large infarct in the lefthemisphere causing a midline shift to the right
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CT now showed hemorrhagic infarcts in the bilateral high parietal regions [Figure 1]; the infarcts were larger on the left side, with a mass effect and midline shift toward the right [Figure 2]. Contrast-enhanced CT showed hypodense attenuation of the superior sagittal sinus posteriorly with peripheral enhancement (called the empty delta sign), Which was suggestive of sinus thrombosis [Figure 2].
PMC2964787_02
T2-weighted axial MR image showing a small area of subcortical white matter edema in the left high parietal parasagittal region due to a venous infarct
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Initial noncontrast T2-weighted MR image revealed a small hyperintense lesion in the left high parietal region of the brain, predominantly involving the white matter [Figure 3].
Coronal T1-weighted postcontrast MR image showing empty delta sign due to superior sagittal sinus thrombosis
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Coronal plane contrast-enhanced T1-weighted image demonstrated a nonenhancing superior sagittal sinus with the empty delta sign [Figure 4].
Maximum-intensity projection (MIP) MR venography image shows nonvizualization of the anterior portion of the superior sagittal sinus due to thrombosis
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On MR venography there was nonvisualization of the anterior portion of the superior sagittal sinus due to absent flow, confirming the presence of thrombosis [Figure 5].