An optimal dimensionality multi-shell sampling scheme with accurate and efficient transforms for diffusion MRI

Alice P. Bates, Zubair Khalid, Jason D. McEwen, Rodney A. Kennedy

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    1 Citation (Scopus)

    Abstract

    This paper proposes a multi-shell sampling scheme and corresponding transforms for the accurate reconstruction of the diffusion signal in diffusion MRI by expansion in the spherical polar Fourier (SPF) basis. The sampling scheme uses an optimal number of samples, equal to the degrees of freedom of the band-limited diffusion signal in the SPF domain, and allows for computationally efficient reconstruction. We use synthetic data sets to demonstrate that the proposed scheme allows for greater reconstruction accuracy of the diffusion signal than the multi-shell sampling scheme obtained using the generalised electrostatic energy minimisation (gEEM) method used in the Human Connectome Project. We also demonstrate that the proposed sampling scheme allows for increased angular discrimination and improved rotational invariance of reconstruction accuracy than the gEEM scheme.

    Original languageEnglish
    Title of host publication2017 IEEE 14th International Symposium on Biomedical Imaging, ISBI 2017
    PublisherIEEE Computer Society
    Pages770-773
    Number of pages4
    ISBN (Electronic)9781509011711
    DOIs
    Publication statusPublished - 15 Jun 2017
    Event14th IEEE International Symposium on Biomedical Imaging, ISBI 2017 - Melbourne, Australia
    Duration: 18 Apr 201721 Apr 2017

    Publication series

    NameProceedings - International Symposium on Biomedical Imaging
    ISSN (Print)1945-7928
    ISSN (Electronic)1945-8452

    Conference

    Conference14th IEEE International Symposium on Biomedical Imaging, ISBI 2017
    Country/TerritoryAustralia
    CityMelbourne
    Period18/04/1721/04/17

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