Document Detail


Ictal brain hemodynamics in the epileptic focus caused by a brain tumor using functional magnetic resonance imaging (fMRI).
MedLine Citation:
PMID:  11162757     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Using functional magnetic resonance imaging (fMRI) we were able to observe, in detail, ictal brain hemodynamics during epileptic seizure caused by a brain tumor. A 53-year-old man was experencing partial motor seizures of the left side of his face and neck. In a brain MR image a mass lesion was found in the subcortical area of the right frontal lobe. We found focal spikes in his right hemisphere, though dominantly in C4 and T4 regions. fMRI investigations were carried out at 1.5 T (GE Signa Horizon) using gradient-echo echo-planar neuroimaging. We were able to perform the ictal examination twice. The activated regions were focalized and clearly found only on the lateral side of the tumor base. The region was in agreement with the epileptic focus examined using an electrocorticogram (ECOG). The signal intensity in the seizure focus rapidly increased 30 seconds before the convulsion was observed. After the end of the convulsion it also took 30 seconds to restore the signal intensity to the baseline value. fMRI is a very useful tool for various studies such as the identification of the epileptic focus, the mechanism of epileptic seizure, and so on.
Authors:
F Kubota; S Kikuchi; M Ito; N Shibata; T Akata; A Takahashi; T Sasaki; N Oya; J Aoki
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Seizure     Volume:  9     ISSN:  1059-1311     ISO Abbreviation:  Seizure     Publication Date:  2000 Dec 
Date Detail:
Created Date:  2001-02-22     Completed Date:  2001-04-26     Revised Date:  2014-10-21    
Medline Journal Info:
Nlm Unique ID:  9306979     Medline TA:  Seizure     Country:  England    
Other Details:
Languages:  eng     Pagination:  585-9     Citation Subset:  IM    
Copyright Information:
Copyright 2000 BEA Trading Ltd.
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MeSH Terms
Descriptor/Qualifier:
Brain Mapping
Brain Neoplasms / blood supply*,  diagnosis
Dominance, Cerebral / physiology*
Echo-Planar Imaging
Electroencephalography*
Epilepsy, Partial, Motor / diagnosis,  physiopathology*
Evoked Potentials / physiology
Frontal Lobe / blood supply*
Hemodynamics / physiology
Humans
Image Processing, Computer-Assisted
Magnetic Resonance Imaging*
Male
Middle Aged
Motor Cortex / blood supply
Regional Blood Flow / physiology

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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