Aortic valve bypass for aortic stenosis: imaging appearances on multidetector CT
Charles S White1, Jean Jeudy, Katrina Read
1Diagnostic Radiology, University of Maryland School of Medicine, 22 S. Greene St., Baltimore, MD 21201, USA. cwhite@umm.edu
The International Journal of Cardiovascular Imaging
|July 21, 2006
Summary
Aortic valve bypass using an apicoaortic conduit is a viable option for high-risk aortic stenosis patients. Multidetector CT (MDCT) effectively visualizes the conduit and potential complications.
Area of Science:
- Cardiovascular Surgery
- Medical Imaging
- Radiology
Background:
- Aortic stenosis is a critical condition often requiring intervention.
- Aortic valve bypass with an apicoaortic conduit offers an alternative for high-risk patients.
- Understanding the imaging characteristics of these conduits is crucial for patient management.
Purpose of the Study:
- To describe the imaging appearances of apicoaortic conduits used in aortic valve bypass.
- To evaluate the utility of multidetector CT (MDCT) in visualizing these conduits and associated complications.
Main Methods:
- Retrospective analysis of ECG-gated MDCT scans from patients who underwent apicoaortic conduit placement.
- Assessment of conduit visibility, valve visualization, and post-operative complications by two radiologists.
- Review of follow-up imaging studies where available.
Main Results:
- The apicoaortic conduit was visualized in all 12 evaluated patients.
- The conduit valve was visible in 91% of patients receiving contrast.
- Common findings included periconduit outpouching and left ventricular hypoperfusion; complications like hemorrhage and pseudoaneurysm were noted.
Conclusions:
- Aortic valve bypass with an apicoaortic conduit is a feasible alternative to aortic valve replacement in select high-risk patients.
- MDCT is an excellent imaging modality for assessing the features and complications of apicoaortic conduits.
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