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A fast algorithm to reduce gibbs ringing artifact in MRI.

Xin Huang1, Wufan Chen

  • 1Department of Biomedical Engineering, Southern Medical University, Guangzhou, China, 510515 (phone: +86-20-61648294; fax: +86-20-61648286;

Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference
|February 7, 2007
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This study introduces an improved Gegenbauer reconstruction method for magnetic resonance imaging (MRI) to reduce Gibbs ringing artifacts. The new technique offers faster computation and eliminates the need for parameter selection, enhancing image quality.

Area of Science:

  • Medical Imaging
  • Signal Processing
  • Biomedical Engineering

Background:

  • Magnetic Resonance Imaging (MRI) often undersamples k-space data to shorten scan times.
  • Undersampling in MRI leads to Gibbs ringing artifacts, degrading image quality.
  • Existing methods like Gegenbauer reconstruction reduce artifacts but are computationally intensive and require parameter tuning.

Purpose of the Study:

  • To develop an improved reconstruction method for MRI that effectively removes Gibbs ringing artifacts.
  • To reduce computational cost and eliminate parameter selection complexity associated with artifact removal.
  • To enhance the accuracy of edge detection for more efficient reconstruction.

Main Methods:

  • Modified the Gegenbauer method by incorporating inverse polynomial reconstruction.

Related Experiment Videos

  • Replaced Gegenbauer polynomials with Chebyshev polynomials for improved efficiency.
  • Developed an enhanced edge detection algorithm to improve reconstruction accuracy.

    • Main Results:

    • The proposed method significantly reduces reconstructed error and computational cost compared to traditional methods.
    • The new technique operates without requiring manual parameter selection.
    • Experimental validation demonstrates effective artifact removal and improved efficiency.

    Conclusions:

    • The improved Gegenbauer-Chebyshev method offers an efficient and accurate solution for Gibbs ringing artifact removal in MRI.
    • This advancement can lead to faster MRI scans with higher image resolution and quality.
    • The integrated edge detection further optimizes the reconstruction process.