Tissue Segmentation Using Sparse Non-negative Matrix Factorization of Spherical Mean Diffusion MRI Data

Peng Sun, Ye Wu, Geng Chen, Jun Wu, Dinggang Shen, Pew Thian Yap

Research output: Contribution to journalConference article

Abstract

In this paper, we present a method based on sparse non-negative matrix factorization (NMF) for brain tissue segmentation using diffusion MRI (DMRI) data. Unlike existing NMF-based approaches, in our method NMF is applied to the spherical mean data, computed on a per-shell basis, instead of the original diffusion-weighted images. This is motivated by the fact that the spherical mean is independent of the fiber orientation distribution and is only dependent on tissue microstructure. Applying NMF to the spherical mean data will hence allow tissue signal separation based solely on the microstructural properties, unconfounded by factors such as fiber dispersion and crossing. We show results explaining why applying NMF directly on the diffusion-weighted images fails and why our method is able to yield the expected outcome, producing tissue segmentation with greater accuracy.

Original languageEnglish
Pages (from-to)69-76
Number of pages8
JournalMathematics and Visualization
Issue number226249
DOIs
Publication statusPublished - 2019 Jan 1
Externally publishedYes
EventInternational Workshop on Computational Diffusion MRI, CDMRI 2018 held with International Conference on Medical Image Computing and Computer Assisted Intervention, MICCAI 2018 - Granada, Spain
Duration: 2018 Sep 202018 Sep 20

Fingerprint

Spherical Means
Non-negative Matrix Factorization
Matrix Factorization
Sparse matrix
Factorization
Magnetic resonance imaging
Segmentation
Tissue
Fiber Orientation
Microstructure
Shell
Fiber reinforced materials
Fiber
Brain
Dependent
Fibers

Keywords

  • Diffusion MRI
  • Sparse NMF
  • Spherical mean
  • Tissue segmentation

ASJC Scopus subject areas

  • Modelling and Simulation
  • Geometry and Topology
  • Computer Graphics and Computer-Aided Design
  • Applied Mathematics

Cite this

Tissue Segmentation Using Sparse Non-negative Matrix Factorization of Spherical Mean Diffusion MRI Data. / Sun, Peng; Wu, Ye; Chen, Geng; Wu, Jun; Shen, Dinggang; Yap, Pew Thian.

In: Mathematics and Visualization, No. 226249, 01.01.2019, p. 69-76.

Research output: Contribution to journalConference article

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