2025年3月12日 · Cerebral venous thrombosis (CVT) (plural: thromboses) refers to the occlusion of venous channels in the cranial cavity, including dural venous thrombosis, cortical vein thrombosis and deep cerebral vein thrombosis. They often co-exist and the clinical presentation among them is very similar and non-specific.

2010年10月21日 · CT-venography is a simple and straight forward technique to demonstrate venous thrombosis. In the early stage there is non-enhancement of the thrombosed vein and in a later stage there is non-enhancement of the thrombus with surrounding enhancement known as empty delta sign, as discussed before.

本文从cvst的流行病学、病因学、临床与病理入手，重点介绍了cvst特征性ct、mri及dsa表现，并根据其影像表现初步判断预后。 CVST早期准确诊断，对指导临床精准治疗及预后评估具有重要意义。

2018年6月19日 · When CVST is suspected in adults the first-line imaging technique is unenhanced computed tomography (CT) scan; this allows for the ruling out of brain tumors, abscesses or arterial stroke. In the acute phase, CVST is seen in unenhanced CT scans as a hyperdense signal in the vessel lumen, that becomes iso- …

2015年5月11日 · As most patients with CVST present with nonspecific symptoms and often CVST is not immediately suspected, patients are likely to have nonenhanced head CT (NCT) at presentation. NCT is the examination of choice for screening patients with nonspecific neurological presentations in the context of low suspicion of CVST [ 4 ].

2024年1月1日 · RBCs dominant CVST at acute phase shows high attenuation on unenhanced CT and is effective for heparin therapy, whereas CVST after subacute phase shows low attenuation on unenhanced CT by the thrombus contents of fibrin, hemosiderin and collagen, and may be ineffective to heparin therapy.

2024年3月21日 · Cerebral venous sinus thrombosis (CVST) is a rare stroke involving blood clot formation in the dural venous sinuses, predominantly affecting younger individuals, especially women. Historically, CVST was associated with high mortality rates, but advancements in neuroimaging have improved diagnosis and prognosis, with mortality rates less than 10%.

2024年8月1日 · In children and adults, noncontrast head CT is typically the initial imaging modality. If the results are positive or equivocal with high clinical suspicion, a CT venogram or MRI/MRV is often obtained to determine the extent and impact of the thrombosis. 7. CVST may be diagnosed by the “cord” sign or “empty delta” sign.

The incidence of cerebral venous thrombosis (CVT) is increasing due to the widespread use of computed tomography (CT) and magnetic resonance imaging (MRI) for investigating patients with acute headaches and new onset of seizures. Alternatively referred to as cerebral venous sinus thrombosis (CVST) o …

2019年8月22日 · CT multiplanar reconstruction (MPR) views improve the CT accuracy for depicting CVST, especially those affecting the cortical venous thrombosis. The CT false-negative cases include subacute and chronic thrombus or partially recanalized thrombus.