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Under-sampling and compressed sensing of 3D spatially-resolved displacement propagators in porous media using APGSTE-RARE MRI.

Accepted version
Peer-reviewed

Type

Article

Change log

Authors

de Kort, Daan W 
Hertel, Stefan A 
Appel, Matthias 
de Jong, Hilko 
Mantle, Michael D 

Abstract

A method for under-sampling and compressed sensing of 3D spatially-resolved propagators is presented and demonstrated for flow in a packed bed and a heterogeneous carbonate rock. By sampling only 12.5% of q,k-space, the experimental acquisition time was reduced by almost an order of magnitude. In particular, for both systems studied, a 3D image was acquired at 1 mm isotropic spatial resolution such that 134,400 local propagators were obtained. Data were acquired in ~1 h and ~11 h for the packed bed and rock, respectively. It is shown that spatial resolution and under-sampling using this implementation retains the quantitative nature of the propagator measurement, and differences between implementation of this measurement in two and three dimensions are identified. The potential for 3D spatially-resolved propagators to provide new insights into transport processes in porous media by characterisation of the statistical moments of the propagators is discussed.

Description

Keywords

Flow, Porous media, Spatially-resolved propagators, Geologic Sediments, Image Enhancement, Image Interpretation, Computer-Assisted, Imaging, Three-Dimensional, Magnetic Resonance Imaging, Porosity, Signal Processing, Computer-Assisted

Journal Title

Magn Reson Imaging

Conference Name

Journal ISSN

0730-725X
1873-5894

Volume Title

56

Publisher

Elsevier BV