Accelerated diffusion operators for enhancing DW-MRI

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

Samenvatting

the intra-voxel diffusion pattern compared to its simpler predecessor diffusion tensor imaging (DTI). However, HARDI in general produces very noisy diffusion patterns due to the low SNR from the scanners at high b-values. Furthermore, it still exhibits limitations in areas where the diffusion pattern is asymmetrical (bifurcations, splaying fibers, etc.). To overcome these limitations, enhancement and denoising of the data based on context information is a crucial step. In order to achieve it, convolutions are performed in the coupled spatial and angular domain. Therefore the kernels applied become also HARDI data. However, these approaches have high computational complexity of an already complex HARDI data processing. In this work, we present an accelerated framework for HARDI data regularizaton and enhancement. The convolution operators are optimized by: pre-calculating the kernels, analysing kernels shape and utilizing look-up-tables. We provide an increase of speed, compared to previous brute force approaches of simpler kernels. These methods can be used as a preprocessing for tractography and lead to new ways for investigation of brain white matter.
Originele taal-2Engels
TitelEurographics Workshop on Visual Computing for Biology and Medicine
UitgeverijThe Eurographics Association
Aantal pagina's8
ISBN van elektronische versie978-3-905674-28-6
DOI's
StatusGepubliceerd - 2010
Evenement2nd Eurographics Workshop on Visual Computing for Biology and Medicine (VCBM 2010) - Leipzig, Duitsland
Duur: 1 jul 20102 jul 2010

Congres

Congres2nd Eurographics Workshop on Visual Computing for Biology and Medicine (VCBM 2010)
LandDuitsland
StadLeipzig
Periode1/07/102/07/10

Vingerafdruk Duik in de onderzoeksthema's van 'Accelerated diffusion operators for enhancing DW-MRI'. Samen vormen ze een unieke vingerafdruk.

  • Citeer dit

    Rodrigues, P., Duits, R., Haar Romeny, B. M. T., & Vilanova, A. (2010). Accelerated diffusion operators for enhancing DW-MRI. In Eurographics Workshop on Visual Computing for Biology and Medicine The Eurographics Association. https://doi.org/10.2312/VCBM/VCBM10/049-056