Ischemic StrokeCreated OnMay 6, 2020Last Updated OnMay 6, 2020byadmin You are here: Main Radiology Ischemic Stroke < All Topics Table of Contents Acute Infarct Clinical features: Sudden onset left hemiparesis CT Brain-Acute Infarct Loss of grey white matter differentiation with diffuse hypoattenuation involving right posterior central gyrus, right superior parietal lobe and down into right superior temporal gyrus. Old Infarct Clinical features: Acute confusion several months after a stroke. Old infarct was usually not the cause of confusion and usually is cause by infection, mainly urinary tract infection especially in bed bound patient CT Brain – Old infarct This CT shows the typical appearance of an old territorial infarct Normal grey and white matter are replaced by tissue of similar density to cerebrospinal fluid Occipital Infarct Clinical features: Eg: Sudden onset right homonymous hemianopia. CT Brain – Occipital infarct Low density of grey and white matter in the left occipital lobe is due to a left posterior cerebral artery infarct Large MCA infarct Clinical features Eg: Sudden onset of hemiparesis. CT Brain – Large MCA infarct Low density of the left hemisphere correlates with the anatomical position of the whole middle cerebral artery (MCA) territory Hyperdense MCA sign due to thrombus The infarct is causing swelling of the brain with mass effect – effacement of the sulci and ventricles with shift of midline structures to the right *Some of the image photo is taken from web, we do not own this, it’s for knowledge sharing purpose.
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