Ischemic stroke | Radiology Reference Article - Radiopaedia.org
WEBJul 23, 2024 · Non-contrast CT of the brain remains the mainstay of imaging in the setting of an acute stroke. It is fast, inexpensive and readily available. Its main limitation, however, is the limited sensitivity in the acute setting.
Middle cerebral artery (MCA) infarct - Radiopaedia.org
WEBFeb 24, 2023 · The middle cerebral artery territory is the most commonly affected territory in a cerebral infarction, due to the size of the territory and the direct flow from the internal carotid artery into the middle cerebral artery, providing the easiest path for thromboembolism.
Lacunar infarct | Radiology Reference Article - Radiopaedia.org
WEBJan 21, 2024 · CT. In the acute setting, lacunar infarcts appear as ill-defined hypodensities. Chronic lesions appear as hypodense foci (similar to CSF). MRI. In an acute setting, the following signal changes are seen: T1: slightly hypointense. T2/FLAIR: hyperintense. DWI: restricted diffusion. may demonstrate acute lesions not visible on other sequences
Cerebellar infarction | Radiology Reference Article - Radiopaedia.org
WEBJun 28, 2024 · In the acute stage, cerebellar infarcts are first seen as hyperintense areas on DWI because of cytotoxic edema with restricted diffusion, after which they soon become hyperintense on FLAIR and T2WI as well 9.
Pulmonary infarction | Radiology Reference Article - Radiopaedia.org
WEBApr 27, 2024 · In the acute/subacute setting, it may be difficult to differentiate ischemic pulmonary hemorrhage from actual lung infarction. The evolution of findings over time is helpful, as hemorrhage without infarction usually resolves within a week, while infarction evolves over months and results in parenchymal scarring.
Posterior cerebral artery (PCA) infarct - Radiopaedia.org
WEBApr 15, 2023 · Posterior cerebral artery (PCA) infarcts arise, as the name says, from occlusion of the posterior cerebral artery. It is a type of posterior circulation infarction.
CT perfusion in ischemic stroke | Radiology Reference Article ...
WEBMar 4, 2024 · The key to interpreting CT perfusion in the setting of acute ischemic stroke is understanding and identifying the infarct core and the ischemic penumbra, as a patient with a small core and a large penumbra is most likely to benefit from reperfusion therapies.
Hemorrhagic transformation of ischemic stroke - Radiopaedia.org
WEBJul 15, 2024 · After intravenous thrombolysis, predictors of hemorrhagic transformation include 6: severe strokes (NIHSS >14) proximal middle cerebral artery occlusion. hypodensity (CT) affecting >1/3 of the middle cerebral artery territory. delayed recanalization (>6 hours after stroke onset) absence of collateral flow.
Alberta stroke programme early CT score (ASPECTS)
WEBSep 7, 2024 · The Alberta stroke program early CT score (ASPECTS) 1 is a 10-point quantitative topographic CT scan score used for middle cerebral artery (MCA) stroke patients. It has also been adjusted for the posterior circulation (see below).
Striatocapsular infarct | Radiology Reference Article
WEBMay 21, 2024 · Striatocapsular infarcts, also known as basal ganglionic capsular infarcts are infarcts involving the caudate nucleus, putamen, and the internal capsule without any involvement of the cortex, usually caused by either a complete or partial proximal middle cerebral artery occlusion.
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