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Radiofrequency interference in magnetic resonance imaging: Identification and rectification

Wingchi Edmund Kwok1

  • 1Department of Imaging Sciences, University of Rochester, Rochester, United States.

Journal of Clinical Imaging Science
|October 7, 2024
PubMed

Insights

Radiofrequency (RF) interference causes common magnetic resonance imaging (MRI) artifacts that mimic pathology. This review guides technologists and radiologists in identifying and resolving these disruptive RF interference artifacts to improve diagnostic accuracy.

Area of Science:

  • Medical Imaging
  • Radiological Physics

Background:

  • Radiofrequency (RF) interference artifacts are prevalent in magnetic resonance imaging (MRI).
  • These artifacts manifest as linear bright bands, often resembling zippers.
  • They can obscure underlying tissues, reduce signal-to-noise ratio, and mimic pathologies, compromising diagnostic quality.

Purpose of the Study:

  • To review the nature of RF interference in MRI.
  • To provide guidance on identifying MRI artifacts caused by RF interference.
  • To offer efficient strategies for resolving and preventing RF interference issues.

Main Methods:

  • Literature review of RF interference in MRI.
  • Analysis of common artifact appearances and sources.
  • Compilation of diagnostic and troubleshooting techniques.

Main Results:

  • RF interference artifacts are characterized by parallel bright lines.
  • Multiple sources and similar-looking artifacts complicate identification.
  • Effective resolution requires prompt and accurate identification of the RF interference source.

Conclusions:

  • This article serves as an educational resource for MR technologists and radiologists.
  • It aims to improve the management of RF interference artifacts in MRI.
  • Proper identification and resolution of RF interference are crucial for maintaining diagnostic image integrity.
Keywords:
Image artifactImage qualityMagnetic resonance imagingMagnetic resonance imaging artifactRadiofrequency interference

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