Document Detail


Diffusion tensor imaging analysis of long association bundles in the presence of an arteriovenous malformation.
MedLine Citation:
PMID:  17886548     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECT: Conventional imaging demonstrates intertwined fibers of the cerebral white matter as a homogeneous substrate. Recently, diffusion tensor imaging has allowed 3D reconstruction of these fiber bundles. The goal of this study was to analyze the modifications of the association fibers induced by an arteriovenous malformation (AVM) in the parietotemporooccipital (PTO) associative area and their clinical significance. METHODS: The authors analyzed the long association fibers in seven patients harboring an AVM in or near the PTO region in relation with the fibers' clinical manifestation. The fibers include the arcuate fasciculus (AF), the occipitofrontal fasciculus (OFF), and the inferior longitudinal fasciculus (ILF). These structures were compared with the contralateral bundles. RESULTS: The modification of the tracts could establish a pattern signature depending on the specific location of the vascular malformation. There was a positive correlation between the degree of modifications of OFF and ILF fiber tracts and visual deficits. Alteration of the AF correlated with a speech disorder and the risk of postoperative deficits. CONCLUSIONS: Diffusion tensor imaging enables in vivo dissection of fiber tracts coursing through the PTO area. Depending on the location of the AVMs, long association fibers are variously modified. These findings correlate with clinical manifestations and may predict outcome after surgery.
Authors:
Josée Bérubé; Nancy McLaughlin; Pierre Bourgouin; Gilles Beaudoin; Michel W Bojanowski
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of neurosurgery     Volume:  107     ISSN:  0022-3085     ISO Abbreviation:  J. Neurosurg.     Publication Date:  2007 Sep 
Date Detail:
Created Date:  2007-09-24     Completed Date:  2007-10-11     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0253357     Medline TA:  J Neurosurg     Country:  United States    
Other Details:
Languages:  eng     Pagination:  509-14     Citation Subset:  AIM; IM    
Affiliation:
Department of Physiology, University of Montréal, Quebec, Canada.
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MeSH Terms
Descriptor/Qualifier:
Adult
Aged
Case-Control Studies
Cerebral Cortex*
Diffusion Magnetic Resonance Imaging
Echo-Planar Imaging
Female
Humans
Imaging, Three-Dimensional
Intracranial Arteriovenous Malformations / complications,  pathology*,  surgery
Male
Medial Forebrain Bundle / pathology*
Middle Aged

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


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