PMC5412251_01
Brain non-enhanced computed tomography: dense triangle sign (A, arrow), dense clot sign (B, arrows
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F1
In view of the condition, a brain computed tomography (CT) was performed and this revealed dense triangle sign and dense clot sign (figure 1). 
Magnetic resonance imaging of brain showed empty delta sign (A, arrowed) and magnetic resonance venography confirmed a diagnosis of cerebral venous sinus thrombosis (B
cjim-8-056-g002.jpg
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F2
Magnetic resonance imaging (MRI) of brain was requested and empty delta sign was seen (figure 2A). Magnetic resonance venography (MRV) demonstrated extensive thrombosis in the transverse sinuses, and confirmed a diagnosis of cerebral venous sinus thrombosis (figure 2B).