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Limits to anatomical accuracy of diffusion tractography using modern approaches

Schilling, Kurt G., Nath, Vishwesh, Hansen, Colin, Parvathaneni, Prasanna, Blaber, Justin, Gao, Yurui, Neher, Peter, Aydogan, Dogu Baran, Shi, Yonggang, Ocampo-Pineda, Mario, Schiavi, Simona, Daducci, Alessandro, Girard, Gabriel, Barakovic, Muhamed, Rafael-Patino, Jonathan, Romascano, David, Rensonnet, Gaëtan, Pizzolato, Marco, Bates, Alice, Fischi, Elda, Thiran, Jean-Philippe, Canales-Rodríguez, Erick J., Huang, Chao, Zhu, Hongtu, Zhong, Liming, Cabeen, Ryan, Toga, Arthur W., Rheault, Francois, Theaud, Guillaume, Houde, Jean-Christophe, Sidhu, Jasmeen, Chamberland, Maxime ORCID:, Westin, Carl-Fredrik, Dyrby, Tim B., Verma, Ragini, Rathi, Yogesh, Irfanoglu, M. Okan, Thomas, Cibu, Pierpaoli, Carlo, Descoteaux, Maxime, Anderson, Adam W. and Landman, Bennett A. 2019. Limits to anatomical accuracy of diffusion tractography using modern approaches. NeuroImage 185 , pp. 1-11. 10.1016/j.neuroimage.2018.10.029

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Diffusion MRI fiber tractography is widely used to probe the structural connectivity of the brain, with a range of applications in both clinical and basic neuroscience. Despite widespread use, tractography has well-known pitfalls that limits the anatomical accuracy of this technique. Numerous modern methods have been developed to address these shortcomings through advances in acquisition, modeling, and computation. To test whether these advances improve tractography accuracy, we organized the 3-D Validation of Tractography with Experimental MRI (3D-VoTEM) challenge at the ISBI 2018 conference. We made available three unique independent tractography validation datasets – a physical phantom and two ex vivo brain specimens - resulting in 176 distinct submissions from 9 research groups. By comparing results over a wide range of fiber complexities and algorithmic strategies, this challenge provides a more comprehensive assessment of tractography's inherent limitations than has been reported previously. The central results were consistent across all sub-challenges in that, despite advances in tractography methods, the anatomical accuracy of tractography has not dramatically improved in recent years. Taken together, our results independently confirm findings from decades of tractography validation studies, demonstrate inherent limitations in reconstructing white matter pathways using diffusion MRI data alone, and highlight the need for alternative or combinatorial strategies to accurately map the fiber pathways of the brain.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Cardiff University Brain Research Imaging Centre (CUBRIC)
Publisher: Elsevier
ISSN: 1053-8119
Date of Acceptance: 9 October 2018
Last Modified: 06 May 2023 02:29

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