Under-sampling and compressed sensing of 3D spatially-resolved displacement propagators in porous media using APGSTE-RARE MRI.
de Kort, Daan W
Hertel, Stefan A
de Jong, Hilko
Mantle, Michael D
Sederman, Andrew J
Gladden, Lynn F
Magn Reson Imaging
MetadataShow full item record
de Kort, D. W., Hertel, S. A., Appel, M., de Jong, H., Mantle, M. D., Sederman, A. J., & Gladden, L. F. (2019). Under-sampling and compressed sensing of 3D spatially-resolved displacement propagators in porous media using APGSTE-RARE MRI.. Magn Reson Imaging, 56 24-31. https://doi.org/10.1016/j.mri.2018.08.014
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.
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
External DOI: https://doi.org/10.1016/j.mri.2018.08.014
This record's URL: https://www.repository.cam.ac.uk/handle/1810/287217
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