Diffusion-negative stroke: a report of two cases.

P Y Wang; P B Barker; R J Wityk; A M Uluğ; P C van Zijl; N J Beauchamp

PubMed · 10588112

Diffusion-negative stroke: a report of two cases.

P Y Wang·P B Barker·R J Wityk·A M Uluğ·P C van Zijl·N J Beauchamp

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. Follow-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.

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Acute Disease Aged Cerebral Infarction Diagnosis, Differential Echo-Planar Imaging Follow-Up Studies Humans Image Enhancement Image Processing, Computer-Assisted Magnetic Resonance Angiography Magnetic Resonance Imaging Male Neurologic Examination Sensitivity and Specificity Case Reports Journal Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S.

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P Y Wang, P B Barker, R J Wityk, A M Uluğ, P C van Zijl, N J Beauchamp. Diffusion-negative stroke: a report of two cases.. https://pubmed.ncbi.nlm.nih.gov/10588112/

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