Unenhanced CT scans show dense cortical veins (white arrows,A), an uncommon direct sign of cerebral venous thrombosis (CVT) known as cord sign. Cerebral vein and cerebral venous sinus thrombosis Cerebral vein and cerebral venous sinus thromboses are blood clots that form in the veins that drain the blood from the brain called the sinuses and cerebral veins. Cerebral Venous Sinus Thrombosis Radiology.Dural venous sinus thrombosis (plural: Cerebral venous sinus thrombosis is a rare condition when a large blood clot forms in a large vein in the brain called a dural venous sinus. A brain CT scan showed intra-parenchymal haemorrhage in the left hemisphere, while CT angiography showed multiple bleeding spots within the parenchymal haemorrhage and lack of opacification of the left transverse and sigmoid sinuses, suggesting thrombosis of the venous sinuses (Fig. Cerebral edema and venous infarction may be apparent on any modality, but for the detection of the thrombus itself, the most commonly used tests are computed tomography (CT) and magnetic resonance imaging (MRI), both using various types of radiocontrast to perform a venogram and visualise the veins around the brain. “This prevents blood from draining out of the brain. They can lead to severe headaches, confusion, and stroke-like symptoms. Brain, Venous Sinus Thrombosis. “Cerebral venous sinus thrombosis (CVST) occurs when a blood clot forms in the brain’s venous sinuses, the medical school writes online. Both CT and MRI are used to diagnose the occlusion of a venous sinus, but MRI is superior to CT for detecting a clot in the cortical or deep veins. Cerebral venous sinus thrombosis (CVST) occurs when a blood clot forms in the brain’s venous sinuses. Cerebral Venous Thrombosis and Multidetector CT Angiography: Tips and Tricks. As a result, blood cells may break and leak blood into the brain tissues, forming a hemorrhage. Although noncontrast head CT may detect alternative diagnoses or demonstrate venous infarcts or hemorrhages, it has poor sensitivity and shows direct signs of cerebral venous thrombosis in only one third of patients. This chain of events is part of a stroke that can occur in adults and children of all ages. “This prevents blood from draining out of the brain. The wide ranging of clinical symptoms makes the use of imaging in “slices” even more important for diagnosis. Cerebral Venous Sinus Thrombosis (CVST) is a type of rare blood clot that forms in the venous sinuses in your brain. Note also indirect signs of CVT, including subcortical hemorrhagic infarction ( black arrows ), diffuse brain swelling, and small ventricular size. If you have cerebral venous sinus thrombosis: Respond quickly to symptoms like headaches, blurry vision, fainting, losing control of a part of your body, and seizures. CT venography provides a highly detailed depiction of the cerebral venous system, superior to that available with conventional TOF MR venography, and has at least equivalent accuracy for the detection of cerebral venous thrombosis (, 23). by J. Linn et al American Journal of Neuroradiology 28:946-952, May 2007. in eMedicine by Mahesh R Patel. “Cerebral venous sinus thrombosis (CVST) occurs when a blood clot forms in the brain’s venous sinuses, the medical school writes online. The clot prevents blood from draining out of the brain. 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