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Title: Occipital Intralobar fasciculi : a description, through tractography, of three forgotten tracts
Authors: Bugain, Maeva
Dimech, Yana
Torzhenskaya, Natalia
Thiebaut de Schotten, Michel
Caspers, Svenja
Muscat, Richard
Bajada, Claude J.
Keywords: Diffusion tensor imaging
Diffusion magnetic resonance imaging
Medical radiology -- Practice
Issue Date: 2021
Publisher: Nature Publishing Group
Citation: Bugain, M., Dimech, Y., Torzhenskaya, N., de Schotten, M. T., Caspers, S., Muscat, R., & Bajada, C. J. (2021). Occipital Intralobar fasciculi: a description, through tractography, of three forgotten tracts. Communications Biology, 4(1), 1-11.
Abstract: Diffusion MRI paired with tractography has facilitated a non-invasive exploration of manyassociation, projection, and commissuralfiber tracts. However, there is still a scarcity ofresearch studies related to intralobar associationfibers. The Dejerines’(two of the mostnotable neurologists of 19thcentury France) gave an in-depth description of the intralobarfibers of the occipital lobe. Unfortunately, their exquisite work has since been sparsely citedin the modern literature. This work gives a modern description of many of the occipitalintralobar lobefibers described by the Dejerines. We perform a virtual dissection andreconstruct the tracts using diffusion MRI tractography. The dissection is guided by theDejerines’treatise,Anatomie des Centres Nerveux. As an accompaniment to this article, weprovided a French-to-English translation of the treatise portion concerningfive intra-occipitaltracts, namely: the stratum calcarinum, the stratum proprium cunei, the vertical occipitalfasciculus of Wernicke, the transverse fasciculus of the cuneus and the transverse fasciculusof the lingual lobule of Vialet. It was possible to reconstruct all but one of these tracts.For completeness, the recently described sledge runner fasciculus, although not one of theDejerines’tracts, was identified and successfully reconstructed.
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