Spatio-Temporal dMRI Acquisition Design: Reducing the Number of $q\tau$ Samples Through a Relaxed Probabilistic Model

Abstract : Acquisition time is a major limitation in recovering brain white matter microstructure with diffusion Magnetic Resonance Imaging. Finding a sampling scheme that maximizes signal quality and satisfies given time constraints is NP-hard. We alleviate that by introducing a relaxed probabilistic model of the problem, for which sub-optimal solutions can be found effectively. Our model is defined in the $q\tau$ space, so that it captures both spacial and temporal phenomena. The experiments on synthetic data and in-vivo diffusion images of the C57Bl6 wild-type mice reveal superiority of our technique over random sampling and even distribution in the $q\tau$ space.
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https://hal.inria.fr/hal-01562617
Contributor : Patryk Filipiak <>
Submitted on : Thursday, July 20, 2017 - 9:18:17 AM
Last modification on : Tuesday, November 5, 2019 - 1:38:02 PM