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Efficacy of the Fluid Attenuated Inversion Recovery FLAIR) Sequence of MRI as a Preoperative Diagnosis of Hippocampal Sclerosis Takato MORIOKA 1 , Shunji NISHIO 1 , Futoshi MIHARA 2 , Mitsuteru MURAISHI 1 , Kei HISADA 1 , Kanehiro HASUO 2 , Masashi FUKUI 1 1Department of Neurosurgery, Neurological Institute, Faculty of Medicine, Kyushu University 2Department of Radiology, Faculty of Medicine, Kyushu University Keyword: fluid attenuated inversion recovery sequence , hippocampal sclerosis , magnetic resonance imaging , temporal lobe epilepsy pp.143-150
Published Date 1998/2/10
DOI https://doi.org/10.11477/mf.1436901527
  • Abstract
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A newly advanced MRI pulse sequence, the FLAIR (fluid attenuated inversion recovery) imaging, inwhich a long TE spin echo sequence is used with suppression of the CSF with an inversion pulse, displaysthe CSF space as a no-signal intensity area. There have been only a few reports on the FLAIR pulse sequ-ence of temporal lobe epilepsy (TLE) as yet. We examined 9 cases of intractable TLE by FLAIR imagesand analyzed the advantages and disadvantages of the FLAIR pulse sequence for decision making ontemporal lobectomy. All patients underwent anterior temporal lobectomy with hippocampectomy, and thediagnoses were confirmed histologically after surgery. Abnormally high T2 signals (HT2S) were moreconspicuous with the FLAIR sequence than with any of the conventional sequences. Tilted axial plane,orientated along to the long axis of the hippocampal body, clearly demonstrated hippocampal atrophy(HA). Selection of a FLAIR sequence into the routine MR examination of patients with TLE is recom-mended.


Copyright © 1998, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1251 印刷版ISSN 0301-2603 医学書院

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