Accelerated microstructure imaging via convex optimisation for regions with multiple fibres (AMICOx)

A. Auria, D. Romascano, E. Canales-Rodriguen, Y. Wiaux, T. B. Dirby, D. Alexander, J. P. Thiran, A. Daducci

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

Abstract

This paper reviews and extends our previous work to enable fast axonal diameter mapping from diffusion MRI data in the presence of multiple fibre populations within a voxel. Most of the existing mi-crostructure imaging techniques use non-linear algorithms to fit their data models and consequently, they are computationally expensive and usually slow. Moreover, most of them assume a single axon orientation while numerous regions of the brain actually present more complex configurations, e.g. fiber crossing. We present a flexible framework, based on convex optimisation, that enables fast and accurate reconstructions of the microstructure organisation, not limited to areas where the white matter is coherently oriented. We show through numerical simulations the ability of our method to correctly estimate the microstructure features (mean axon diameter and intra-cellular volume fraction) in crossing regions.

Original languageEnglish
Title of host publication2015 IEEE International Conference on Image Processing
PublisherIEEE
Pages1673-1676
Number of pages4
ISBN (Print)9781479983391
DOIs
Publication statusPublished - 2015
Event22nd IEEE International Conference on Image Processing 2015 - Quebec City, Canada
Duration: 27 Sep 201530 Sep 2015
Conference number: 22

Conference

Conference22nd IEEE International Conference on Image Processing 2015
Abbreviated titleICIP 2015
CountryCanada
CityQuebec City
Period27/09/1530/09/15

Keywords

  • convex optimisation
  • diffusion MRI
  • microstructure imaging

ASJC Scopus subject areas

  • Software
  • Computer Vision and Pattern Recognition
  • Signal Processing

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  • Cite this

    Auria, A., Romascano, D., Canales-Rodriguen, E., Wiaux, Y., Dirby, T. B., Alexander, D., Thiran, J. P., & Daducci, A. (2015). Accelerated microstructure imaging via convex optimisation for regions with multiple fibres (AMICOx). In 2015 IEEE International Conference on Image Processing (pp. 1673-1676). [7351085] IEEE. https://doi.org/10.1109/ICIP.2015.7351085