Fig. 2From: Radiological evaluation in patients with clinical suspicion of cerebral venous sinus thrombosis presenting with nontraumatic headache - a retrospective observational study with a validation cohortAxial reformatted 5 mm nonenhanced CT of suspected thrombus in the left sigmoid sinus marked by a red arrow (window width 90 window level 40). Note the normal HU value in the corresponding right sigmoid sinusBack to article page