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Detectability of Cerebral Hemisphere Ischaemic Infarcts by CT within 6 H of Stroke Neuroradiology 38:31-33, VonKummer,R.,et al, 1996 See this aricle in Pubmed Article Abstract To determine how early and how reliably ischaemic brain infarcts can be detected on CT within 6 h of the onset of cerebral hemisphere strokes,44 such studies were interpreted by an experienced neuroradiologist blinded to clinical signs,but aware that the cohort was a stroke population.He was asked to detect and localise an area of parenchymal low density and/or focal brain swelling.A follow-up study showing the definite infarct served as a reference in each case.In 38 patients areas of slightly low density were seen,and in 36 follow-up CT confirmed infarcts in the locations indicated.In 2 patients the reading was false positive.In 6 patients no low density focus could be detected.In these 8 patients examined by CT within 180 min of the stroke,no low density could be identified,even in retrospect with the knowledge of the findings on follow-up.Thus,42 readings(95%)were true positive or true negative;2 were false positive;and none was a false negative.CT within 6 h of the onset of symptoms has a mean sensitivity of 82%(36/44)for ischaemic cerebral hemisphere infarcts. By contrast,its sensitivity to ischaemic parenchymal low density is low during the initial 2 h.The early development of hemispheric infarcts can be detected reliably if the radiologist is familiar with the signs.

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(click to filter results - removes previous filter) CAT scan CAT scan,abnormal CAT scan,early changes in CVA cerebral infarction cerebrovascular accident

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