Fogging effect on MR in subacute cerebral infarct: Report of 2 cases.
- Author:
Jin Woon PARK
1
;
Sang Hoon SHIN
;
Oeung Kyo KIM
;
Kyoung HEO
;
Chung Ki EUN
Author Information
1. Department of Neurology, College of Medicine, Inje University, Paik Hospital, Korea.
- Publication Type:Case Report
- MeSH:
Cerebral Infarction;
Magnetic Resonance Imaging;
Weather*
- From:Journal of the Korean Neurological Association
1997;15(2):388-393
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
In acute phase, cerebral infartion is 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 intensity on TI 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.
