Diffusion-negative stroke: a report of two cases.

TitleDiffusion-negative stroke: a report of two cases.
Publication TypeJournal Article
Year of Publication1999
AuthorsWang PY, Barker PB, Wityk RJ, Uluğ AM, van Zijl PC, Beauchamp NJ
JournalAJNR. American journal of neuroradiology
Date Published1999 Nov-Dec

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.

Alternate JournalAJNR Am J Neuroradiol