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Acceleration of high angular and spatial resolution diffusion imaging using compressed sensing | IEEE Conference Publication | IEEE Xplore

Acceleration of high angular and spatial resolution diffusion imaging using compressed sensing


Abstract:

Achieving simultaneously high angular and spatial resolution in diffusion imaging is challenging because of the long acquisition times involved. We propose a novel compre...Show More

Abstract:

Achieving simultaneously high angular and spatial resolution in diffusion imaging is challenging because of the long acquisition times involved. We propose a novel compressed sensing method to acquire high angular and spatial resolution diffusion imaging data, while keeping the scan time reasonable. We show that joint under sampling of 6-D k-q space is more efficient than undersampling only one of the dimensions. We use a sparse Gaussian mixture model and an iterative reconstruction scheme to recover the peaks of the orientation distribution functions (ODF) with high accuracy. We show that at least 6-fold acceleration of acquisition is possible, thereby enabling high angular and spatial resolution diffusion imaging in a reasonable scan time.
Date of Conference: 02-05 May 2012
Date Added to IEEE Xplore: 12 July 2012
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Conference Location: Barcelona, Spain

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