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Diffusion-Negative Stroke:A Report of Two Cases
AJNR 20:1876-1880, Wang,P.Y-K.,et al, 1999
See this aricle in Pubmed
Article Abstract
Diffusion-weighted MR imaging is generally thought to be highly sensitive for the diagnosis of acute stroke. We report two cases of hyperacute stroke with absence of changes on diffusion-weighted images within 4 hours of symptom onset. Fo llow-up studies, performed 4 days later, showed infarction in regions compatible with the clinical presentation and (in one case) with the initial perfusion deficit. These cases indicate that normal findings on diffusion-weighted images in patients with suspected cerebral ischemia do not rule out impending infarction.
Related Tags
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cerebral infarction
cerebrovascular accident
MRI
MRI,early changes in CVA
MRI,false negative
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