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Ann Thorac Surg 1992;54:39-43
© 1992 The Society of Thoracic Surgeons

Articles

Magnetic resonance imaging evaluation of recipient for cryopreserved aortic allograft

Neal D. Kon, MD*, Kerry M. Link, MD, William P. Buchanan, MD, Abdel-Mohsen Nomeir, MD, Thomas R. Downes, MD, A.Robert Cordell, MD

Departments of Cardiothoracic Surgery, Internal Medicine/Cardiology, and Radiology/MRI, The Bowman Gray School of Medicine of Wake Forest University, Winston-Salem, North Carolina USA

* Address reprint requests to Dr Kon, Department of Cardiothoracic Surgery, Medical Center Blvd, Winston-Salem, NC 27157.

Aortic valve replacement with a cryopreserved aortic allograft is the procedure of choice for many patients with aortic valvular heart disease. We have used magnetic resonance imaging preoperatively to determine annular size and coronary artery orientation in the recipient, which not only has enabled us to select an allograft of appropriate size from a distant tissue bank, but also has helped us to identify preoperatively the recipient with a truly bicuspid valve in which the coronary arteries are oriented 180 degrees apart. Sixteen consecutive patients were evaluated preoperatively, the aortic annulus being measured with both magnetic resonance imaging and echocardiography. Cryopreserved aortic allografts were ordered on the basis of the magnetic resonance imaging measurement. Annular size was then measured intraoperatively with calibrated sizers. Magnetic resonance imaging annular measurements correlated highly with those found at operation (r = 0.92), whereas echocardiographic measurements correlated less well (r = 0.69). Coronary orientation was accurately predicted in every case (r = 1.0). Therefore, we have found magnetic resonance imaging to be useful in the preoperative evaluation of patients for aortic valve replacement with a cryopreserved aortic allograft.




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T. R. Zwink, I. G. Burwash, C. Y. Miyake-Hull, and C. M. Otto
Changes in Aortic Annulus Diameter During the Cardiac Cycle and its Effect on Predicting Aortic Valve Prosthesis Size
Journal of Diagnostic Medical Sonography, September 1, 1994; 10(5): 262 - 267.
[Abstract] [PDF]


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Copyright © 1992 by The Society of Thoracic Surgeons.