What is the role of MRI and CT scanning in the workup of coarctation of the aorta (CoA)?

Updated: Nov 20, 2018
  • Author: Syamasundar Rao Patnana, MD; Chief Editor: Stuart Berger, MD  more...
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Answer

MRI and CT are useful in older or postoperative patients to assess residual arch obstruction, arch hypoplasia, or formation of aneurysms (see image below). [34, 35] Ultrafast CT scanning is preferable if multiple surgical clips or a stent is present in the area of coarctation.

Apart from defining the anatomy, peak systolic pressure gradients may also be calculated using MRI-based computational fluid dynamics. [36]

Aortic coarctation visualized by aortic angiograph Aortic coarctation visualized by aortic angiography.
Aortic coarctation visualized by MR imaging. Aortic coarctation visualized by MR imaging.

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