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ID 15281
Eprint ID
15281
FullText URL
Title Alternative
Correlative study of hippocampal atrophy assessed by MRI and clinical features in temporal lobe epilepsy.
Author
Sato, Keiko
Nakatsu, Takeshi
Morimoto, Kiyoshi
Hayabara, Toshiyuki
Kuroda, Shigetoshi
Abstract
側頭葉てんかん患者39例の海馬萎縮をMRIを用いて評価し,臨床像との関連を検討した。MRIの冠状断short SE像で海馬の幅を計測し,萎縮側海馬の村側海馬に対する比(a)を求め,海馬萎縮(+)群;a<0.8,11例,境界群;0.8≦a<0.9,13例,海馬萎縮(-)群;a≧0.9,15例の3群に分けた。海馬萎縮(+)群で罹病期間が長い傾向があった。また,発作間歇期脳波の焦点側は海馬委縮(+)群の11例中9例で萎縮側と一致した。しかし,発病年齢,MRI撮影時年齢,発作頻度,全般化発作の有無,抗てんかん薬総服用量,知能障害,精神症状,生下時仮死の有無については3群間で差が認められなかった。この結果から,側頭葉てんかんにおける海馬萎縮は,生下時や全身けいれん発作時の低酸素状態によるものではなく,脳局所の反復するてんかん性発射と関連する可能性が示唆され,海馬萎縮の機序を考えるうえで興味深く思われた。
Abstract Alternative
We studied hippocampal atrophy in 39 patients with temporal lobe epilepsy using MRI. The ratio (a) of the width of the hippocampus on the atrophic side to that on the contralateral side was measured in coronal sections of the short SE in MRI. According to this ratio, the patients were divided into three groups : 11 with hippocampal atrophy (a<0.8), 13 with borderline atrophy (0.8≦a≦0.9), and 15 with no hippocampal atrophy (a≧0.8). In the patients of the group with hippocampal atrophy, the clinical history of epilepsy tended to be long, and the site of hippocampal atrophy was consistent with that of interictal spike foci on the electroencephalogram in 9 out of 11 patients. However, there was no difference between the three groups, with regard to age at onset, age when MRI was conducted, frequency of seizures, generalized seizures, the types and doses of antiepileptic drugs used, history of neonatal asphyxia, intelligence and epilpetic psychosis. These results suggest that hippocampal atrophy in temporal lobe epilepsy may be related to repetition of epileptic dischargges in a localized part of the brain.
Keywords
側頭葉てんかん (temporal lobe epilepsy)
海馬委縮 (hippocampal atrophy)
罹病期間 (clinical history)
MRI
発作間歇期脳波 (interictal EEG foci)
Published Date
1997-09-10
Publication Title
岡山大学医療技術短期大学部紀要
Publication Title Alternative
Bulletin of School of Health Sciences Okayama University
Volume
volume8
Issue
issue1
Publisher
岡山大学医療技術短期大学部
Publisher Alternative
School of Health Sciences Okayama University
Start Page
31
End Page
35
ISSN
0917-4494
NCID
AN10355371
Content Type
Departmental Bulletin Paper
Related Url
http://eprints.lib.okayama-u.ac.jp/15276/
language
日本語
File Version
publisher
Refereed
False
Eprints Journal Name
fhs