Accuracy of diffusion-weighted imaging in the diagnosis of stroke in patients with suspected cerebral infarct

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dc.contributor.authorBrunser, Alejandro
dc.contributor.authorHoppe, Arnold
dc.contributor.authorIllanes, Sergio
dc.contributor.authorDíaz, Violeta
dc.contributor.authorMuñoz, Paula
dc.contributor.authorCárcamo, Daniel
dc.contributor.authorOlavarría, Verónica
dc.contributor.authorValenzuela, Marcela
dc.contributor.authorLavados, Pablo
dc.date.accessioned2017-04-11T13:59:42Z
dc.date.available2017-04-11T13:59:42Z
dc.date.issued2013
dc.description.abstractBACKGROUND AND PURPOSE: The accuracy of diffusion-weighted imaging (DWI) for the diagnosis of acute cerebral ischemia among patients with suspected ischemic stroke arriving to an emergency room has not been studied in depth. METHODS: DWI was performed in 712 patients with acute or subacute focal symptoms that suggested an acute ischemic stroke (AIS), 609 of them with AIS. RESULTS: DWI demonstrated a sensitivity of 90% and specificity of 97%, a positive likelihood ratio of 31 and a negative likelihood ratio of 0.1 for detecting AIS. The overall accuracy was 95%. Of those patients who demonstrated abnormal DWI studies, 99.5% were AIS patients, and of those patients with normal DWI studies 63% were stroke mimics. CONCLUSIONS: DWI is accurate in detecting AIS in unselected patients with suspected AIS; a negative study should alert for nonischemic conditions.
dc.format.extent4
dc.identifier.citationStroke, 2013, 44(4):1169-1171
dc.identifier.urihttp://hdl.handle.net/11447/1124
dc.identifier.urihttp://dx.doi.org/10.1161/STROKEAHA.111.000527
dc.language.isoen_US
dc.publisherAmerican Heart Association
dc.subjectdiagnosis
dc.subjectdiffusion-weighted imaging
dc.subjectstroke
dc.titleAccuracy of diffusion-weighted imaging in the diagnosis of stroke in patients with suspected cerebral infarct
dc.typeArtículo

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