Transient disappearance of cerebral infarcts on CT scan, the so-called fogging effect
- 1 October 1981
- journal article
- research article
- Published by Springer Nature in Neuroradiology
- Vol. 22 (2) , 61-65
- https://doi.org/10.1007/bf00344775
Abstract
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.Keywords
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