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Related Experiment Video

Updated: May 13, 2026

High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques
11:34

High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques

Published on: December 3, 2013

High-resolution 3D radial bSSFP with IDEAL.

Catherine J Moran1, Ethan K Brodsky, Leah Henze Bancroft

  • 1Department of Medical Physics, University of Wisconsin, Madison, Wisconsin, USA.

Magnetic Resonance in Medicine
|March 19, 2013
PubMed
Summary
This summary is machine-generated.

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This study presents a new radial bSSFP MRI method for high-resolution fat-water separation, even with B0 inhomogeneity. It achieves 0.63 mm isotropic resolution in just 5 minutes, enabling clearer imaging in challenging environments.

Area of Science:

  • Magnetic Resonance Imaging
  • Biomedical Engineering
  • Medical Physics

Background:

  • Radial trajectories in balanced steady state free precession (bSSFP) enable high-resolution imaging.
  • Existing fat-water separation methods for radial bSSFP often struggle with B0 inhomogeneity.
  • Achieving high resolution with fat-water separation in challenging B0 environments remains a significant challenge.

Purpose of the Study:

  • To develop a high-resolution bSSFP method with fat-water separation robust to B0 inhomogeneity.
  • To enable advanced MRI in difficult in vivo imaging scenarios.
  • To maintain high resolution within the temporal constraints of bSSFP and IDEAL techniques.

Main Methods:

  • Integration of a 3D radial trajectory with the IDEAL (Iterative Decomposition of water and fat with Echo Asymmetry and least-squares estimation) chemical species separation method.
Keywords:
IDEALbalanced steady state free precessionradial imagingwater-fat imaging

Related Experiment Videos

Last Updated: May 13, 2026

High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques
11:34

High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques

Published on: December 3, 2013

  • Implementation of a dual-pass pulse sequence to maintain high resolution within bSSFP and IDEAL timing.
  • Investigation of unique radial line sampling per echo time to reduce scan duration.
  • Analysis of undersampling artifacts and their impact on chemical species separation.

    • Main Results:

    • Achieved 0.63 mm isotropic resolution in a 5-minute scan using the novel bSSFP method.
    • Demonstrated successful fat-water separation and high-resolution imaging in challenging in vivo environments (breast, knee with hardware).
    • Evaluated the trade-offs between unique radial sampling and artifact manifestation compared to conventional sampling.

    Conclusions:

    • The combined 3D radial bSSFP and IDEAL method provides high-resolution fat-water separation in the presence of B0 inhomogeneity.
    • This technique overcomes limitations of previous methods, enabling advanced imaging in difficult clinical settings.
    • The dual-pass sequence and optimized sampling strategy offer efficient, high-quality MRI acquisition.