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Normal Diffusion-Weighted MRI During Stroke-Like Deficits
Neurol 52:1784-1792,1733, Ay,H.,et al, 1999
See this aricle in Pubmed

Article Abstract
Best final diagnosis was a stroke mimic in 37% and a cerebral ischemic event in 63%. The remaining patients were considered to have had cerebral ischemic events: lacunar syndrome (7 patients; 3 with reversible deficits, 3 with infarction on follow-up imaging). In each of the latter three patients, the regions destined to infarct showed decreased perfusion on the initial hemodynamically weighted MRI (HWI). Normal DWI in one-half of such patients have an ischemic cause as the best clinical diagnosis. Small brainstem lacunar infarctions may escape detection. Concomitant HWI can identify some patients with brain ischemia that is symptomatic but not yet to the stage of causing DWI abnormality.
 
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cerebral ischemia
cerebrovascular accident
cerebrovascular accident,misdiagnosis
lacunar infarction
migraine
misdiagnosis
MRI
MRI,abnormal
MRI,diffusion weighted
MRI,false negative
seizure

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