Clinical Vignette: Role of Susceptibility-Weighted Imaging in Predicting Stroke Evolution
Susceptibility-weighted imaging provides information about blood oxygenation levels. Deoxyhemoglobin is increased in hypoperfused tissue. Accordingly, the draining veins in an ischemic area may reveal abnormal hypointensity. We report serial MR imaging in a boy with acute ischemic stroke
and show the ability of susceptibility-weighted imaging to depict areas of critical perfusion, comparable with dynamic susceptibility contrast perfusion-weighted imaging and arterial spin-labeling. Our report confirms that susceptibility-weighted imaging may provide noninvasive data about
brain tissue at risk for infarct progression by focusing on venous drainage.
Keywords: ACA = anterior cerebral artery; ADC = apparent diffusion coefficient; AIS = acute ischemic stroke; ASL = arterial spin-labeling; DSC-PWI = dynamic susceptibility contrast perfusion-weighted imaging; DWI = diffusion-weighted imaging; ICA = internal carotid artery; MCA = middle cerebral artery; MRA = magnetic resonance angiography; MTT = mean transit time; SWI = susceptibility-weighted imaging; mIP = minimum intensity projection; rCBF = relative cerebral blood flow
Document Type: Research Article
Publication date: December 1, 2013
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