Please use this identifier to cite or link to this item: https://repositorio.ufba.br/handle/ri/13927
metadata.dc.type: Artigo de Periódico
Title: Middle longitudinal fasciculus delineation within language pathways: A diffusion tensor imaging study in human
Other Titles: European Journal of Radiology
Authors: Champfleur, Nicolas Menjot de
Maldonado, Igor Lima
Moritz-Gasser, Sylvie
Machi, Paolo
Le Bars, Emmanuelle
Bonafé, Alain
Duffau, Hugues
metadata.dc.creator: Champfleur, Nicolas Menjot de
Maldonado, Igor Lima
Moritz-Gasser, Sylvie
Machi, Paolo
Le Bars, Emmanuelle
Bonafé, Alain
Duffau, Hugues
Abstract: Introduction: The existence in the human brain of the middle longitudinal fasciculus (MdLF), initially described in the macaque monkey, is supported by diffusion tensor imaging studies. In the present work, we aim (1) to confirm that this fascicle is found constantly in control subjects with the use of DTI techniques and (2) to delineate the MdLF from the other fiber bundles that constitute the language pathways. Materials and methods: Tractography was realized in four right-handed healthy volunteers for the arcuate fascicle, uncinate fascicle, inferior fronto-occipital fascicle, inferior longitudinal fascicle and the middle longitudinal fascicle. The fiber tracts were characterized for their size, mean fractional anisotropy (FA), for their length, number of streamlines, and lateralization indices were calculated. Results: The MdLF is found constantly and it is clearly delineated from the other fascicles that constitute the language pathways, especially the ventral pathway. It runs within the superior temporal gyrus white matter from the temporal pole, then it extends caudally in the upper part of the sagittal stratum and the posterior part of the corona radiata, to reach the inferior parietal lobule (angular gyrus). We found a leftward asymmetry for all fiber tracts when considering the mean FA. Discussion: Using DTI methods, we confirm that the MdLF connects the angular gyrus and the superior temporal gyrus. On the basis of these findings, the role of the MdLF is discussed. Conclusion: The middle longitudinal fasciculus, connects the angular gyrus and the superior temporal gyrus and its course can be systematically differenciated from those of other fascicles composing both ventral and dorsal routes
Keywords: Diffusion tensor imaging
Tractography
Language Pathways
Publisher: European Journal of Radiology
metadata.dc.rights: Acesso Aberto
URI: http://repositorio.ufba.br/ri/handle/ri/13927
Issue Date: 2013
Appears in Collections:Artigo Publicado em Periódico (Faculdade de Medicina)

Files in This Item:
File Description SizeFormat 
5555555555555555.pdf1,51 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.