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Related Experiment Videos

Artifacts associated with MR neuroangiography.

J Tsuruda1, D Saloner, D Norman

  • 1Department of Radiology, University of California, San Francisco.

AJNR. American Journal of Neuroradiology
|September 1, 1992
PubMed
Summary
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Neurovascular MR angiography (MRA) artifacts can hinder diagnosis. This paper categorizes common MRA artifacts and offers solutions to improve diagnostic accuracy and clinical utility.

Area of Science:

  • Radiology
  • Medical Imaging

Background:

  • Neurovascular MR angiography (MRA) is increasingly used clinically.
  • Novel MRA techniques introduce new artifacts affecting image interpretation.

Purpose of the Study:

  • To categorize common MRA artifacts.
  • To provide examples and clinical problems associated with these artifacts.
  • To propose generalized solutions for artifact mitigation.

Main Methods:

  • Classification of MRA artifacts into six types: poor visualization, stenosis overestimation, view-to-view variations, false positives, false negatives, and vessel overlap.
  • Identification of four generalized solutions: optimizing acquisition parameters, editing volume boundaries, reviewing source images, and employing alternative image processing.

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Main Results:

  • Detailed examples and clinical implications of each artifact type are presented.
  • Proposed solutions aim to address the identified artifact categories.

Conclusions:

  • Understanding and categorizing MRA artifacts is crucial for accurate interpretation.
  • Implementing proposed solutions can enhance the clinical utility and diagnostic reliability of MRA.