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Related Experiment Videos

Characteristic features of MR truncation artifacts.

L F Czervionke1, J M Czervionke, D L Daniels

  • 1Department of Radiology, Medical College of Wisconsin, Froedtert Memorial Lutheran Hospital, Milwaukee 53226.

AJR. American Journal of Roentgenology
|December 1, 1988
PubMed
Summary

Truncation artifacts in Magnetic Resonance (MR) imaging can distort spinal anatomy. Using a 256x256 matrix significantly reduces these artifacts, improving image quality.

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Area of Science:

  • Medical Imaging
  • Radiology
  • Physics

Background:

  • Magnetic Resonance (MR) imaging utilizes Fourier transforms for data processing.
  • This processing can lead to truncation artifacts, affecting image fidelity.
  • These artifacts manifest as alterations in intensity, shape, and detail, particularly in spinal structures.

Purpose of the Study:

  • To review truncation phenomena in MR imaging.
  • To discuss how these artifacts impact the MR appearance of the spine.
  • To identify effective methods for artifact reduction.

Main Methods:

  • Review of truncation phenomena using graphic and phantom models.
  • Discussion of the effects of truncation artifacts on spinal MR imaging.
  • Evaluation of matrix size as a factor in artifact reduction.

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Main Results:

  • Truncation artifacts can significantly alter spinal anatomy on MR images.
  • Ring artifacts (Gibb phenomenon) are a common manifestation near high-contrast interfaces.
  • Using a 256x256 matrix was found to be the most effective method for reducing these artifacts.

Conclusions:

  • Truncation artifacts are an inherent challenge in MR imaging due to Fourier transform processing.
  • Understanding these artifacts is crucial for accurate interpretation of spinal MR scans.
  • Employing a 256x256 matrix, where feasible, is recommended to enhance image quality and minimize spinal artifact distortion.