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Journal of Imaging, Volume 7, Issue 11
November 2021 - 29 articles
Cover Story: High spatio-angular resolution diffusion MRI (dMRI) has been shown to provide accurate identification of complex neuronal fiber configurations, albeit at the cost of long acquisition times. We propose a method to recover intra-voxel fiber configurations at high spatio-angular resolution relying on a multidimensional undersampling scheme to enable accelerated acquisitions. The inverse problem for the reconstruction of the fiber orientation distribution is regularized by an advanced sparsity prior, also including knowledge of the spatial distribution of white matter, gray matter, cerebrospinal fluid. A minimization problem is formulated and solved via a stochastic algorithm. Simulations and real data analysis suggest that accurate FOD mapping can be achieved via severe undersampling, potentially enabling high spatio-angular resolution dMRI in the clinical setting. View this paper
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J. Imaging - ISSN 2313-433XCreative Common CC BY license