Rotation-invariant measures for population study in HARDI - Archive ouverte HAL Access content directly
Conference Papers Year : 2014

Rotation-invariant measures for population study in HARDI

(1) , (1)


We present a novel family of rotational-invariant measures for High Angular Resolution Diffusion Imaging (HARDI) data. This research is motivated by need for the developing new biomarkers and thereby facilitating population-based studies in HARDI. From a spherical harmonics (SH) representation of the angular information in diffusion MRI, we derive rotational-invariant measures computed as homogeneous polynomials of the SH coefficients. When the SH is truncated to order L=4, we find a total of 12 such invariants, which are expected to be sensitive to subtle changes in white matter structure, not captured by tensor fractional anisotropy (FA) or generalized fractional anisotropy (GFA). The method is generalizable to any spherical function, we report here the derivation and results based on the apparent diffusion coefficient (ADC) profile.
Fichier principal
Vignette du fichier
caruyer-verma-ismrm14.pdf (395.92 Ko) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

hal-00944646 , version 1 (10-02-2014)


  • HAL Id : hal-00944646 , version 1


Emmanuel Caruyer, Ragini Verma. Rotation-invariant measures for population study in HARDI. ISMRM, May 2014, Milan, Italy. ⟨hal-00944646⟩
95 View
91 Download


Gmail Facebook Twitter LinkedIn More