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27 de may. de 2024 · Thalamic infarction can be caused by small vessel disease (most common), large artery atherosclerosis, cardioembolism, or unknown factors (cryptogenic) 3 . Classic thalamic territories include the following groups based on vascular supply and corresponding thalamic nuclei 3,5: anterior territory. supplied by tuberothalamic/polar artery from the ...
9 de may. de 2024 · The susceptibility vessel sign is a radiological sign appreciated on susceptibility-sensitive MRI brain sequences that is described in patients with acute ischemic stroke.It correlates well with the hyperdense vessel sign (e.g. hyperdense MCA sign) that may be seen on CT brain, but is considered more sensitive 1.. The sign describes hypointense blooming artifact seen on GRE or SWI MRI brain ...
20 de may. de 2024 · Developmental venous anomaly (DVA), also known as cerebral venous angioma, is a congenital malformation of veins which drain normal brain. They were thought to be rare before cross-sectional imaging but are now recognized as being the most common cerebral vascular malformation, accounting for ~55% of all such lesions.
25 de may. de 2024 · Citation, DOI, disclosures and article data. The Circle of Willis is an arterial polygon (heptagon) formed as the internal carotid and vertebral systems anastomose around the optic chiasm and infundibulum of the pituitary stalk in the suprasellar cistern. This communicating pathway allows equalization of blood-flow between the two sides of the ...
16 de may. de 2024 · Clinical presentation depends on the size of the hemorrhage. Small cerebellar hemorrhages can present with typical "posterior circulation symptoms" of vertigo, ataxia, nausea, vomiting and headache. These can be sudden onset and occur during exercise or stress situations 6. Larger hemorrhages can present with reduced consciousness 6.
15 de may. de 2024 · Citation, DOI, disclosures and article data. Hepatic hemangiomas or hepatic venous malformations are the most common benign vascular liver lesions . They are frequently diagnosed as an incidental finding on imaging, and most patients are asymptomatic. From a radiologic perspective, it is important to differentiate hemangiomas from hepatic ...
27 de may. de 2024 · Intracerebral haemorrhage (ICH), or intraparenchymal cerebral haemorrhage, is a subset of an intracranial haemorrhage as well as of stroke, defined by the acute accumulation of blood within the brain parenchyma. This article concerns non-traumatic intracerebral haemorrhages; traumatic haemorrhagic cerebral contusions are discussed separately.
