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Conventional CT of the aorta.
1Department of Radiology, University of Washington Medical Center, Seattle 98195.
Journal of Thoracic Imaging
|October 1, 1990
Summary
Computed tomography (CT) is a valuable tool for evaluating thoracic aortic aneurysms and dissections, offering advantages over aortography and MRI in many cases. A flexible approach to imaging is essential for accurate diagnosis and treatment planning.
Area of Science:
- Radiology
- Cardiovascular Imaging
- Diagnostic Imaging
Background:
- Computed tomography (CT) has significantly advanced the evaluation of thoracic aortic aneurysms and dissections.
- CT often serves as the primary imaging modality beyond plain radiography for these conditions.
Purpose of the Study:
- To compare the diagnostic capabilities of CT, aortography, and MRI in evaluating thoracic aortic aneurysms and dissections.
- To outline a workable strategy for selecting appropriate radiographic tests.
Main Methods:
- Review of CT, aortography, and MRI findings in thoracic aortic aneurysms and dissections.
- Comparison of the advantages and limitations of each imaging modality.
Main Results:
- CT excels in visualizing aneurysm walls, mural thrombus, and diagnosing dissection with clotted false channels.
- Aortography may be necessary for precise localization of arch aneurysms and assessing aortic insufficiency in acute dissections.
- MRI is suitable for stable patients or those intolerant to contrast agents, and for follow-up.
Conclusions:
- CT offers significant advantages in evaluating thoracic aortic aneurysms and dissections, particularly for non-invasive assessment and diagnosis of clotted dissections.
- A flexible, case-by-case approach to imaging selection is crucial for optimal patient management.
- CT is preferred for follow-up of treated aortic dissections due to its non-invasive nature and informative results.