Cited by 255Advanced Neuroimaging Techniques and ApplicationsAdvanced MRI Techniques and ApplicationsFunctional Brain Connectivity Studies

COMMIT: Convex Optimization Modeling for Microstructure Informed Tractography

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Daducci, Alessandro, Dal Palu, Alessandro, Lemkaddem, Alia, Thiran, Jean-Philippe·2015·IEEE Transactions on Medical Imaging

Abstract

Tractography is a class of algorithms aiming at in vivo mapping the major neuronal pathways in the white matter from diffusion magnetic resonance imaging (MRI) data. These techniques offer a powerful tool to noninvasively investigate at the macroscopic scale the architecture of the neuronal connections of the brain. However, unfortunately, the reconstructions recovered with existing tractography algorithms are not really quantitative even though diffusion MRI is a quantitative modality by nature. As a matter of fact, several techniques have been proposed in recent years to estimate, at the voxel level, intrinsic microstructural features of the tissue, such as axonal density and diameter, by using multicompartment models. In this paper, we present a novel framework to reestablish the link between tractography and tissue microstructure. Starting from an input set of candidate fiber-tracts, which are estimated from the data using standard fiber-tracking techniques, we model the diffusion MRI signal in each voxel of the image as a linear combination of the restricted and hindered contributions generated in every location of the brain by these candidate tracts. Then, we seek for the global weight of each of them, i.e., the effective contribution or volume, such that they globally fit the measured signal at best. We demonstrate that these weights can be easily recovered by solving a global convex optimization problem and using efficient algorithms. The effectiveness of our approach has been evaluated both on a realistic phantom with known ground-truth and in vivo brain data. Results clearly demonstrate the benefits of the proposed formulation, opening new perspectives for a more quantitative and biologically plausible assessment of the structural connectivity of the brain.

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Research works printed but not linked: 2

  1. J.-F. Mangin, P. Fillard, Y. Cointepas, D. Le Bihan, V. Frouin, and C. Poupon, "Towards global tractography," NeuroImage, vol. 80, pp. 290-6, 2013.
  2. D. Kim, S. Sra, and I. S. Dhillon, "A non-monotonic method for large- scale non-negative least squares," Optim Methods Softw, pp. 1-28, 2012.

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Authors
Daducci, A., Dal Palu, A., Lemkaddem, A., & Thiran, J.-P.
Affiliations
  • Centre Hospitalier Universitaire Vaudois (CH)
  • École Polytechnique Fédérale de Lausanne (CH)
Venue
IEEE Transactions on Medical Imaging
Published
2015-01
Volume
34
Issue
1
Pages
246-257
ISSN
  • 0278-0062 (ISSN-L)
  • 1558-254X
OpenAlex
W2077095532
Cited by
255
References
49
Citations by year
2026: 15 · 2025: 23 · 2024: 26 · 2023: 18 · 2022: 25 · 2021: 32 · 2020: 27 · 2019: 26 · 2018: 21 · 2017: 18 · 2016: 12 · 2015: 9 · 2014: 2 · 2013: 1
FWCI
10.69
Type
journal article
Language
en
Open access
Locations
  • IEEE Transactions on Medical Imaging (publishedVersion)
  • PubMed (publishedVersion)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion, cc-by-nc-nd)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion)
  • IRIS (submittedVersion)
  • SERVAL (Université de Lausanne) (submittedVersion)
Funders
  • Swiss National Science Foundation (205321-144529)
  • Center for Biomedical Imaging (CIBM) of the Geneva-Lausanne Universities and the EPFL
Topics
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced MRI Techniques and Applications
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
Keywords
tractography, diffusion MRI, white matter microstructure, multi-compartment model, convex optimization, axon density, structural connectivity, quantitative diffusion MRI
MeSH terms
Algorithms, Brain, Brain Mapping, Humans, Image Processing, Computer-Assisted, Phantoms, Imaging, Diffusion Magnetic Resonance Imaging, Diffusion Tensor Imaging

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