Document Detail

Problems and pitfalls in the evaluation of thoracic aortic dissection by computed tomography.
MedLine Citation:
PMID:  7119193     Owner:  NLM     Status:  MEDLINE    
Several conditions can lead to either false positive or false negative diagnoses of aortic dissection by computed tomography (CT) with intravenous administration of contrast medium. Insufficient contrast enhancement may cause intimal flaps to be missed, leading to a false negative diagnosis. False positive diagnoses result when extraaortic structures (e.g., mediastinal veins, pericardium, thickened pleura, and lung) are mistaken for false channels in the aorta. Superimposition of structures in thick CT slices may cause intimal calcifications to appear displaced. Streak artifacts across the descending aorta can resemble double aortic channels or intimal flaps. Fusiform aneurysms with thrombus are often hard to distinguish from thrombosed dissections by CT as well as by aortography.
J D Godwin; R S Breiman; J M Speckman
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of computer assisted tomography     Volume:  6     ISSN:  0363-8715     ISO Abbreviation:  J Comput Assist Tomogr     Publication Date:  1982 Aug 
Date Detail:
Created Date:  1982-12-02     Completed Date:  1982-12-02     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  7703942     Medline TA:  J Comput Assist Tomogr     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  750-6     Citation Subset:  IM    
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MeSH Terms
Aneurysm, Dissecting / radiography*
Aorta, Thoracic / radiography
Aortic Aneurysm / radiography*
Aortic Diseases / radiography
Calcinosis / radiography
Diagnostic Errors
False Negative Reactions
False Positive Reactions
Radiographic Image Enhancement
Thrombosis / radiography
Tomography, X-Ray Computed*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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