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Human Subinsular Asymmetry Studied by Diffusion Tensor Imaging and Fiber Tracking

S. Rodrigoa,b, O. Naggaraa, C. Oppenheima,b,c, N. Golestanib,c, C. Pouponb, Y. Cointepasb, J.F. Manginb, D. Le Bihanb and J.F. Medera

a Département d'Imagerie Morphologique et Fonctionnelle, Faculté de Médecine, Université Paris-Descartes, Centre Hospitalier Sainte-Anne, Paris, France
b Unité de Neuro-Imagerie Anatomo-Fonctionnelle, Service Hospitalier Frederic Joliot, CEA, Orsay, France
c INSERM U 562, Cognitive Neuroimaging, Service Hospitalier Frederic Joliot, CEA, Orsay, France


Figure 1
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  		Fig 1. Subinsular 3D region of interest (blue) drawn on an axial T2-weighted echo-planar image.


Figure 2
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  		Fig 2. Lateral view of the UF DTI-based tracking (yellow), constrained by frontal and temporal regions of interest (ROI, blue), drawn on coronal views.


Figure 3
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  		Fig 3. Lateral view of the IOF DTI-based tracking (yellow), constrained by frontal and occipital regions of interest (ROI, blue), drawn on coronal views.


Figure 4
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  		Fig 4. Illustration of the fiber tracking projected on a left brain hemisphere (lateral view). Arcuate fasciculus tracking is displayed in dark blue. Segmentation of the UF and IOF tracking by using the 3D region of interestsubinsular is displayed in light blue. The subinsular portions of the UF and IOF are displayed in green and purple, respectively. Their extrainsular portions of the UF and IOF are displayed in red and in yellow, respectively.





Copyright © 2008 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X