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KMID : 0359719970150020388
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Journal of the Korean Neurological Association
1997 Volume.15 No. 2 p.388 ~ p.393
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Fogging Effect on MR in Subacute Cerebral Infarct: Report of 2 Cases
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박진운
신상훈/김응규/허경/은충기
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Abstract
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In acute phase, cerebral in usually hypodense on CT and hyperintense on T2-weighted MR image. This hyperintensity on T2-weighted MR image gradually approaches an isointensity stage after 2 or 3 weeks of onset. In the later stage, cerebral
infarction is
observed hyperintense on T2-weighted MR image. This sequential phenomenon is so-called "fogging effect".
We experienced two cases of "fogging effect". The first case did not show abnormal signal intensityon T1 or T2-weighted MR images taken after 14 days of onset and the second case also did not show abnormal signal intensity after 17 days of onset.
Each
case revealed hyperintense in T2-weighted image with contrast enhancement taken after 20 weeks and 8 weeks of onset, respectively. We present two cases with MRI and brief review of literatures.
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KEYWORD
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