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Related Experiment Videos

MR evaluation of chronic aortic dissection.

J M Pernes1, P Grenier, M T Desbleds

  • 1Service de Radiologie Cardio-Vasculaire, Hôpital Broussais, Paris, France.

Journal of Computer Assisted Tomography
|November 1, 1987
PubMed
Summary

Magnetic resonance imaging (MRI) is an accurate, noninvasive tool for evaluating chronic aortic dissection, identifying intimal flaps and double lumens. It aids in differentiating dissection types and assessing abdominal aorta extension.

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Area of Science:

  • Cardiovascular Imaging
  • Radiology
  • Vascular Surgery

Background:

  • Chronic aortic dissection requires accurate imaging for diagnosis and management.
  • Distinguishing between true and false lumens is crucial for treatment planning.

Purpose of the Study:

  • To evaluate the accuracy of magnetic resonance (MR) imaging compared to CT and angiography in diagnosing chronic aortic dissection.
  • To assess the ability of MR to identify intimal flaps, double lumens, and extent of dissection.

Main Methods:

  • Thirty patients with suspected or known chronic aortic dissection underwent imaging with MR, CT, and angiography.
  • Analysis focused on the detection of intimal flaps, double lumens, thrombosed false lumens, and dissection extent.

Main Results:

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  • MR identified intimal flaps and double lumens in 25 cases.
  • CT diagnosed two cases with thrombosed false lumens missed by MR, visualizing displaced intimal calcifications.
  • All modalities differentiated between type A and B dissections and assessed abdominal aorta extension.

Conclusions:

  • MR is an accurate and noninvasive method for evaluating and following chronic aortic dissection.
  • MR obviates the need for iodinated contrast media, offering a safer alternative.
  • Specific MR techniques like cardiac gating and contiguous slices improve visualization of aortic arch and visceral artery origins.