Middle cerebral artery (MCA) infarct - Radiopaedia.org
Feb 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.
Ischemic stroke | Radiology Reference Article - Radiopaedia.org
Jul 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.
Hyperdense MCA sign (brain) | Radiology Reference Article
Aug 8, 2024 · The hyperdense MCA sign, also known as Gács sign, is a type of hyperdense vessel sign and refers to focal hyperattenuation of the middle cerebral artery (MCA) on non-contrast brain CT and is due to intraluminal thromboembolic material.
CT perfusion in ischemic stroke | Radiology Reference Article ...
Mar 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.
MCA dot sign (brain) | Radiology Reference Article - Radiopaedia.org
Feb 14, 2024 · The middle cerebral artery (MCA) dot sign, also known as the Sylvian fissure sign, is a type of hyperdense vessel sign seen on non-contrast brain CT and represents the cross-sectional M2 equivalent of the hyperdense MCA sign.
Middle cerebral artery | Radiology Reference Article
Jun 7, 2024 · The middle cerebral artery (MCA) is one of the three major paired arteries that supply blood to the brain. The MCA arises from the internal carotid artery as the larger of the two main terminal branches (the other being the anterior cerebral artery), coursing laterally into the lateral sulcus where it branches to perfuse the cerebral cortex.
Hemorrhagic transformation of ischemic stroke - Radiopaedia.org
Jul 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)
Feb 22, 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).
Watershed cerebral infarction | Radiology Reference Article ...
May 8, 2024 · Imaging of watershed infarction should also aim to determine the presence and severity of arterial stenosis and occlusion. Cortical (external) border zones infarct. These are usually wedge-shaped or gyriform: ACA/MCA: in the frontal cortex, extending from the anterior horn to the cortex.
Stroke protocol (CT) | Radiology Reference Article - Radiopaedia.org
Mar 23, 2023 · A CT stroke protocol is obtained in the emergency setting to rapidly diagnose and quantify patients presenting with probable ischemic strokes and to enable appropriate urgent management (e.g. endovascular clot retrieval or intravenous thrombolysis).
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