Fast kq-Space Sampling with Motion-Induced Phase in Diffusion MRI

Marica Pesce, Audrey Repetti, Yves Wiaux

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Abstract

High spatio-angular resolution diffusion MRI (dMRI) has been shown to provide accurate identification of complex fiber configurations. However, its application in clinics remains limited due to the long acquisition time that it requires. Recently, we have developed a method relying on a kq-space under-sampling scheme to recover the intra-voxel fiber configurations through accelerated acquisitions. In the current work, we generalize our method to consider a more realistic setting. In particular, the phase contamination induced by magnetic field inhomogeneities and motion during the signal acquisition has been included in the kq-space measurement model. Through experiments on realistic synthetic data, we show that the phase contamination does not penalize the recovery of the fiber configuration, when the phase factor is assumed to be perfectly known.
Original languageEnglish
Title of host publication2018 IEEE 10th Sensor Array and Multichannel Signal Processing Workshop (SAM)
PublisherIEEE
Pages420-424
Number of pages5
ISBN (Electronic)9781538647523
DOIs
Publication statusPublished - 30 Aug 2018

Publication series

NameSensor Array and Multichannel Signal Processing Workshop (SAM)
PublisherIEEE
ISSN (Electronic)2151-870X

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    Pesce, M., Repetti, A., & Wiaux, Y. (2018). Fast kq-Space Sampling with Motion-Induced Phase in Diffusion MRI. In 2018 IEEE 10th Sensor Array and Multichannel Signal Processing Workshop (SAM) (pp. 420-424). (Sensor Array and Multichannel Signal Processing Workshop (SAM)). IEEE. https://doi.org/10.1109/SAM.2018.8448478