Related Experiment Video
Updated: May 21, 2026
05:07
Pulmonary Structural MRI using Free-Breathing, Self-Gated Ultra-short Echo Time Imaging
Published on: September 6, 2024
Rapid PROPELLER-MRI: a combination of iterative reconstruction and under-sampling
Ashish A Tamhane1, Konstantinos Arfanakis, Mark Anastasio
1Brain Research Imaging Center and Department of Radiology, The University of Chicago, Chicago, Illinois 60637, USA.
Journal of Magnetic Resonance Imaging : JMRI
|June 13, 2012
Summary
This study introduces an accelerated PROPELLER MRI technique using under-sampling and iterative reconstruction. The method reduces scan time and improves image quality by minimizing motion artifacts and blurring.
Area of Science:
- Radiology
- Medical Imaging
- Magnetic Resonance Imaging
Background:
- PROPELLER (Periodically Rotated Parallel Lines with Enhanced Reconstruction) MRI is valuable for motion-insensitive imaging.
- However, long acquisition times and motion-induced blurring can limit its clinical utility.
Purpose of the Study:
- To develop an accelerated PROPELLER MRI technique.
- To reduce acquisition time and eliminate uneven blurring in reconstructed images.
- To enhance robustness against subject motion.
Main Methods:
- Implemented a combination of under-sampled acquisition and iterative reconstruction.
- Modified motion correction methods for under-sampled PROPELLER data.
- Validated the technique through numerical simulations, phantom experiments, and human subject studies.
Main Results:
- Achieved substantial acceleration of PROPELLER acquisition.
- Maintained the inherent motion correction advantages of PROPELLER.
- Minimized under-sampling artifacts and avoided uneven spatial resolution.
Conclusions:
- An effective method for reducing PROPELLER MRI imaging time was developed.
- The technique minimizes artifacts and maintains spatial resolution and motion correction capabilities.
- This approach offers a faster and more robust PROPELLER MRI solution.
