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Publication Detail
Edge Weights and Network Properties in Multiple Sclerosis
  • Publication Type:
  • Authors:
    Powell E, Prados F, Chard D, Toosy A, Clayden JD, Wheeler-Kingshott CGAM
  • Publisher:
  • Publication date:
  • Pagination:
    281, 291
  • Published proceedings:
    Computational Diffusion MRI International MICCAI Workshop
  • Issue:
  • Status:
  • Name of conference:
    Computational Diffusion MRI MICCAI 2018 Workshop
  • Conference place:
    Granada, Spain
  • Conference start date:
  • Conference finish date:
  • Print ISSN:
© 2019, Springer Nature Switzerland AG. Graph theory is able to provide quantitative parameters that describe structural and functional characteristics of human brain networks. Comparisons between subject populations have demonstrated topological disruptions in many neurological disorders; however interpreting network parameters and assessing the extent of the damage is challenging. The abstraction of brain connectivity to a set of nodes and edges in a graph is non-trivial, and factors from image acquisition, post-processing and network construction can all influence derived network parameters. We consider here the impact of edge weighting schemes in a comparative analysis of structural brain networks, using healthy control and relapsing-remitting multiple sclerosis subjects as test groups. We demonstrate that the choice of edge property can substantially affect inferences of network disruptions in disease, ranging from ‘primarily intact connectivity’ to ‘complete disruption’. Although study design should predominantly dictate the choice of edge weight, it is important to consider how study outcomes may be affected.
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