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RadioGraphics, Vol 10, 839-855, Copyright © 1990 by Radiological Society of North America

REVIEWS

CT of thoracic aortic aneurysms

HV Posniak, MC Olson, TC Demos, RA Benjoya and RE Marsan
Department of Radiology, Loyola University Medical Center, Maywood, IL 60153.

Aneurysms of the thoracic aorta are most often the result of arteriosclerotic disease. Other causes include degeneration of the medial layer of the aortic wall, either idiopathically or due to genetic disorders such as Marfan syndrome; aortic dissection; trauma; syphilis and other bacterial infection; noninfective aortitis; and congenital anomaly. We review normal anatomy of the aorta and discuss our technique and interpretation of computed tomography (CT) in the evaluation of the thoracic aorta. We illustrate the CT appearance of different types of aortic aneurysms as well as discuss the use of CT for assessing complications of aneurysms, for postoperative follow-up, and in the differentiation of aortic aneurysm from a paraaortic mass.




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