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A Microfluidic Platform to Study Bioclogging in Porous Media
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Local T1-T2 distribution measurements in porous media
1UNB MRI Centre, Department of Physics, University of New Brunswick, Fredericton, New Brunswick E3B 5A3, Canada.
Journal of Magnetic Resonance (San Diego, Calif. : 1997)
|January 17, 2018
Summary
A new magnetic resonance imaging technique enables precise measurement of T1-T2 distributions in specific sample slices. This method accurately characterizes fluid properties in porous materials, offering valuable insights into their spatial distribution.
Area of Science:
- Magnetic Resonance Imaging
- Materials Science
Background:
- Accurate characterization of T1 and T2 relaxation times is crucial for understanding material properties.
- Existing methods for spatially resolved T1-T2 measurements have limitations in precision and applicability.
Purpose of the Study:
- To introduce a novel slice-selective T1-T2 measurement technique.
- To enable spatially resolved measurement of T1-T2 distributions within samples.
Main Methods:
- Employs an adiabatic inversion pulse for precise slice selection.
- Utilizes a subtraction method based on Carr-Purcell-Meiboom-Gill (CPMG) data.
- Integrates T1 weighting during the recovery phase following slice selection.
Main Results:
- Achieves quasi-rectangular slice selection of approximately 1 mm thickness at arbitrary positions.
- Measures local T1-T2 distributions with quality comparable to bulk measurements.
- Demonstrates applicability for characterizing oil-water mixtures and fluids in porous media.
Conclusions:
- The novel method provides accurate, spatially resolved T1-T2 measurements.
- It is particularly beneficial for analyzing coarse spatial distributions of components in materials.
- This technique offers a valuable tool for fluid characterization in porous media.
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