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Echo-planar microscopy of porous rocks
A M Peters1, P S Robyr, R W Bowtell
1Magnetic Resonance Centre, University of Nottingham, UK.
Magnetic Resonance Imaging
|January 1, 1996
Summary
A new echo-planar imaging technique using multiple radiofrequency pulses (PEPI) creates high-resolution images of porous solids. This method enables rapid T1 and velocity mapping at the microscopic level.
Area of Science:
- Magnetic Resonance Imaging
- Materials Science
- Physics
Background:
- Echo-planar imaging (EPI) is a fast MRI technique.
- High-field MRI (11.7 T) offers enhanced resolution.
- Imaging porous materials presents unique challenges.
Purpose of the Study:
- To implement a modified echo-planar imaging sequence (PEPI) at ultra-high field (11.7 T).
- To generate high-resolution images of porous solids.
- To enable rapid microscopic T1 and velocity mapping.
Main Methods:
- Implementation of a multi-pulse echo-planar imaging (PEPI) sequence.
- Utilized an 11.7 T magnetic resonance imaging scanner.
- Combined PEPI with inversion recovery or flow-encoding sequences.
Main Results:
- Achieved high-resolution imaging of porous solid structures.
- Demonstrated rapid T1 mapping capabilities at the microscopic scale.
- Enabled rapid velocity mapping in microscopic domains.
Conclusions:
- The modified PEPI sequence is effective for high-resolution imaging of porous solids at 11.7 T.
- This technique facilitates rapid microscopic T1 and velocity mapping.
- Offers a powerful tool for studying microstructural dynamics.