2025年3月12日 · MRI. MRI is able to both visualize the clot as well as the sequelae. The clot acutely is isointense on T1 and hypointense on T2 (this can mimic a flow void), with subacute clot becoming hyperintense on T1. Cerebral edema can be identified even in the absence of neurological dysfunction or infarction 1. FLAIR

2010年10月21日 · We can conclude that MRI has many false positives and negatives in the diagnosis of venous thrombosis. Contrast enhanced MR-venography is the most reliable MR technique. CT-venography is even more reliable, because it is easy and less sensitive to pitfalls.

Chronic CVT with incomplete recanalization may present a diagnostic challenge on MRI. Although the thrombus typically has a signal that is isointense on T1WI and isointense/hyperintense on T2WI, there is significant variability in the signal intensity.

2019年10月7日 · Cerebral venous thrombosis is potentially reversible if it is found early, and imaging is fundamental to its diagnosis, with contrast-enhanced MR venography showing the highest accuracy. Cerebral venous thrombosis (CVT) is uncommon, representing approximately 0.5% of all cases of cerebrovascular disease worldwide.

2014年12月1日 · MRI easily shows the ischemic damage, even hemorrhagic, in the cerebral parenchyma in cases of CVT. Finally, imaging may reveal pathology at the origin of the CVT, such as a fracture of the skull, infection, tumor, dural fistula, or intracranial hypotension.

CT venography (CTV) and MRV are the gold standards for the diagnosis of CVT; Classically, CVT on noncontrast CT (NCCT) is a hyperattenuating thrombus in the occluded vessel; on MRI it is the absence of a flow void

2018年12月1日 · Imaging diagnostics techniques as computed tomography, magnetic resonance and digital subtraction angiography (CT, MRI, DSA) allow the diagnosis of CVT detecting a thrombus within the venous sinuses and the secondary effects of thrombosis on brain tissue [9].

2023年8月21日 · Results: Out of 72 cases, acute-early subacute CVT was present in 47.2% (group 1) and late subacute CVT was present in 52.8% patients (group 2). SWI had highest sensitivity, accuracy and...

2015年2月3日 · Subacute CVT at the superior sagittal sinus and right transverse sinus is clearly depicted by DANTE-prepared T1-weighted SPACE. Note that hyper-intense signals on SPACE match flow voids on TOF as denoted by yellow arrows. The size of CVT is better appreciated on SPACE because of the positive contrast.

2012年11月23日 · CVT may mimic subdural hematoma (Fig. 7A, 7B, 7C, 7D, 7E, 7F, 7G). CVT should be confined entirely in the expected lumen of the dural venous sinuses. On the contrary, subdural hemorrhage is seen exterior to the dural venous sinuses.