title: CT diagnosis of type A aortic dissections not demonstrated by aortography.
abstract: False-negative aortography in a patient with a type A dissection is an unusual and serious diagnostic error. We report three cases of type A thoracic dissections with negative aortography but positive CT or magnetic resonance. The factors that might account for this discrepancy and the implications in the evaluation of these patients are discussed.
authors.affiliation: Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO 63110.
authors.forename: T E
authors.initials: TE
authors.lastname: St Amour
authors.forename: F R
authors.initials: FR
authors.lastname: Gutierrez
authors.forename: R G
authors.initials: RG
authors.lastname: Levitt
authors.forename: R C
authors.initials: RC
authors.lastname: McKnight
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000465:Algorithms; D000784:Aortic Dissection / Q000175:diagnosis* / Q000000981:diagnostic imaging; D001014:Aortic Aneurysm / Q000175:diagnosis* / Q000000981:diagnostic imaging; D001027:Aortography; D005188:False Negative Reactions; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed