Graph Based Spatial Position Mapping of Low-Grade Gliomas

  • Sarah Parisot
  • Hugues Duffau
  • Stéphane Chemouny
  • Nikos Paragios
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6892)

Abstract

Low-grade gliomas (WHO grade II) are diffusively infiltrative brain tumors arising from glial cells. Spatial classification that is usually based on cerebral lobes lacks accuracy and is far from being able to provide some pattern or statistical interpretation of their appearance. In this paper, we propose a novel approach to understand and infer position of low-grade gliomas using a graphical model. The problem is formulated as a graph topology optimization problem. Graph nodes correspond to extracted tumors and graph connections to the spatial and content dependencies among them. The task of spatial position mapping is then expressed as an unsupervised clustering problem, where cluster centers correspond to centers with position appearance prior, and cluster samples to nodes with strong statistical dependencies on their position with respect to the cluster center. Promising results using leave-one-out cross-validation outperform conventional dimensionality reduction methods and seem to coincide with conclusions drawn in physiological studies regarding the expected tumor spatial distributions and interactions.

Keywords

Cluster Center Central Node Independent Component Analysis Deformable Registration Graph Connection 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Sarah Parisot
    • 1
    • 2
    • 3
  • Hugues Duffau
    • 4
  • Stéphane Chemouny
    • 3
  • Nikos Paragios
    • 1
    • 2
  1. 1.Laboratoire MASEcole Centrale ParisChatenay MalabryFrance
  2. 2.Equipe GALEN, INRIA Saclay - Ile de FranceOrsayFrance
  3. 3.Intrasense SASMontpellierFrance
  4. 4.Département de Neurochirurgie, Hopital Gui de ChauliacCHUMontpellierFrance

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