Transient disappearance of cerebral infarcts on CT scan,the so-called fogging effect |
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Authors: | Elisabeth Bech Skriver T. Skyhøj Olsen |
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Affiliation: | (1) Department of Neuroradiology, Hvidovre Hospital, Copenhagen, Denmark;(2) Department of Neurology, Bispebjerg Hospital, Copenhagen, Denmark |
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Abstract: | Summary The fogging effect, whereby initially hypodense infarcts become isodense during the second and third week after the onset of stroke, was investigated in a prospective and consecutive series comprising 50 cases with completed stroke. CT scans were performed approximately 3 days, 10 days and 6 months after stroke. The fogging effect was found in 54% of cases. The hypodense areas reappeared on all scans at 6 months. Cerebral infarcts therefore may be overlooked or grossly underestimated if the scan is performed during the second and third week after stroke. |
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Keywords: | Computed tomography Fogging effect Completed stroke Cerebral infarcts |
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