42-year-old male with headaches. Question of sigmoid sinus thrombosis. CTV of intracranial venous sinuses:65 cc of Omnipaque 350 is administered for this exam.3-D reformatted images were acquired utilizing in the dependent workstation.Axial source images, axial, coronal and sagittal 0.9 mm MIP images as well as 3-D reformatted images were obtained and utilized for interpretation of the exam.Examination demonstrates an intraluminal defect seen the left transverse sinus highly suspected of a thrombosed as was suspected on prior MRI examination. There is no definitive extension of this defect into the sigmoid sinus. The lumen of the sinus however remains patent. There is also no detectable abnormality of the left jugular bulb and visualized proximal left internal jugular vein.The confluence of sinuses, right transverse and sigmoid sinus as well as right jugular bulb and proximal dominant right internal jugular remains within normal limits. The superior sagittal sinus, inferior sagittal sinus, straight sinus, vein of Galen, bilateral internal cerebral veins and bilateral thalamostriate veins remain patent and unremarkable.Nonenhanced head CT:Examination demonstrates no evidence of intracranial edema, hemorrhage, mass-effect, midline shift or hydrocephalus.The cortical sulci, ventricular system, CSF cisterns and greater white matter differentiation remains within normal.
1.Intraluminal defect in the left nondominant transverse sinus likely result of thrombus as described. The left transverse sinus lumen is compromised however remains patent and there is no definitive evidence of thrombus within the left sigmoid sinus or the jugular bulb.2.Patent all other intracranial venous sinuses as well as visualized deep venous structures.