DWI Shows Some Potential to Predict Post-TIA Stroke Risk

January 23, 2008 Diagnostic Imaging. DWI Shows Some Potential to Predict Post-TIA Stroke Risk Evidence of brain injury is most prevalent in patients with physical symptoms and long duration of symptoms Dee Rapposelli -------------------------------------------------------------------------------- An acute diffusion lesion is evident in one third of patients who have had a transient ischemic attack,1 and those patients may be at higher risk for stroke,2 according to a pair of studies presented at the 2007 International Stroke Conference in San Francisco in February. Those patients most likely to show evidence of brain injury on MR diffusion-weighted imaging (DWI) are patients who have motor symptoms or whose symptoms last longer (i.e., a mean 60 minutes compared with a mean 30 minutes among patients whose imaging studies are negative for brain injury).1 The findings were the work of the MRI in TIA Collaborative Group, a multi-institutional international endeavor.

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