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Related Experiment Videos

Thoracic aortic dissection: pitfalls and artifacts in MR imaging.

S L Solomon1, J J Brown, H S Glazer

  • 1Edward Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, MO 63110.

Radiology
|October 1, 1990
PubMed
Summary
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Thoracic magnetic resonance (MR) imaging frequently shows artifacts that mimic acute aortic dissection. Awareness and proper technique can help avoid misinterpretation in most cases.

Area of Science:

  • Radiology
  • Medical Imaging

Background:

  • Acute aortic dissection is a critical diagnosis.
  • Thoracic magnetic resonance (MR) imaging is used for evaluation.
  • Artifacts can complicate diagnosis.

Purpose of the Study:

  • To determine the prevalence and severity of artifacts and pitfalls in thoracic MR imaging for acute aortic dissection.
  • To assess the impact of these artifacts on diagnostic accuracy.

Main Methods:

  • Review of 53 thoracic MR imaging examinations.
  • Classification of artifacts and pitfalls into three grades based on diagnostic difficulty.
  • Evaluation of artifact prevalence and severity.

Main Results:

  • 64% of cases (34/53) had grade 1 or higher artifacts.

Related Experiment Videos

  • 19% of cases (10/53) had grade 2 or higher artifacts.
  • 2% of cases (1/53) had grade 3 artifacts, requiring other imaging modalities.

    • Conclusions:

    • Artifacts mimicking aortic dissection are common in thoracic MR imaging.
    • Awareness of artifacts, normal anatomy, multiplanar imaging, and clinical correlation are crucial for accurate diagnosis.
    • Misinterpretation can be largely avoided with appropriate techniques.