2 Citaten (Scopus)
1 Downloads (Pure)

Samenvatting

Diffusion-Weighted MRI (DW-MRI) measures local water diffusion in biological tissue, which reflects the underlying fiber structure. In order to enhance the fiber structure in the DW-MRI data we consider both (convection-)diffusions and Hamilton-Jacobi equations (erosions) on the space \mathbbR3 \rtimes S2Unknown control sequence '\rtimes' of 3D-positions and orientations, embedded as a quotient in the group SE(3) of 3D-rigid body movements. These left-invariant evolutions are expressed in the frame of left-invariant vector fields on SE(3), which serves as a moving frame of reference attached to fiber fragments. The linear (convection-)diffusions are solved by a convolution with the corresponding Green’s function, whereas the Hamilton-Jacobi equations are solved by a morphological convolution with the corresponding Green’s function. Furthermore, we combine dilation and diffusion in pseudo-linear scale spaces on \mathbbR3\rtimes S2Unknown control sequence '\rtimes'. All methods are tested on DTI-images of the brain. These experiments indicate that our techniques are useful to deal with both the problem of limited angular resolution of DTI and the problem of spurious, non-aligned crossings in HARDI.
Originele taal-2Engels
TitelScale Space and Variational Methods in Computer Vision (Third International Conference, SSVM 2011, Ein-Gedi, Israel, May 29-June 2, 2011. Revised Selected Papers)
RedacteurenA.M. Bruckstein, B.M. Haar Romeny, ter, A.M. Bronstein, M.M. Bronstein
Plaats van productieBerlin
UitgeverijSpringer
Pagina's1-13
ISBN van geprinte versie978-3-642-24784-2
DOI's
StatusGepubliceerd - 2012

Publicatie series

NaamLecture Notes in Computer Science
Volume6667
ISSN van geprinte versie0302-9743

Vingerafdruk Duik in de onderzoeksthema's van 'Fiber enhancement in diffusion-weighted MRI'. Samen vormen ze een unieke vingerafdruk.

  • Citeer dit

    Duits, R., Dela Haije, T. C. J., Ghosh, A., Creusen, E. J., Vilanova, A., & Haar Romeny, ter, B. M. (2012). Fiber enhancement in diffusion-weighted MRI. In A. M. Bruckstein, B. M. Haar Romeny, ter, A. M. Bronstein, & M. M. Bronstein (editors), Scale Space and Variational Methods in Computer Vision (Third International Conference, SSVM 2011, Ein-Gedi, Israel, May 29-June 2, 2011. Revised Selected Papers) (blz. 1-13). (Lecture Notes in Computer Science; Vol. 6667). Springer. https://doi.org/10.1007/978-3-642-24785-9_1