MR and CT imaging of pulmonary valved conduits in children and adolescents: normal appearance and complications.

Details

Serval ID
serval:BIB_3D0BBDC5C42E
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
MR and CT imaging of pulmonary valved conduits in children and adolescents: normal appearance and complications.
Journal
Pediatric Radiology
Author(s)
Tenisch E.V., Alamo L.T., Sekarski N., Hurni M., Gudinchet F.
ISSN
1432-1998 (Electronic)
ISSN-L
0301-0449
Publication state
Published
Issued date
12/2014
Peer-reviewed
Oui
Volume
44
Number
12
Pages
1518-1531
Language
english
Notes
Publication types: Journal Article
Abstract
BACKGROUND: The Contegra® is a conduit made from the bovine jugular vein and then interposed between the right ventricle and the pulmonary artery. It is used for cardiac malformations in the reconstruction of right ventricular outflow tract.
OBJECTIVE: To describe both normal and pathological appearances of the Contegra® in radiological imaging, to describe imaging of complications and to define the role of CT and MRI in postoperative follow-up.
MATERIALS AND METHODS: Forty-three examinations of 24 patients (17 boys and 7 girls; mean age: 10.8 years old) with Contegra® conduits were reviewed. Anatomical description and measurements of the conduits were performed. Pathological items examined included stenosis, dilatation, plicature or twist, thrombus or vegetations, calcifications and valvular regurgitation. Findings were correlated to the echographic gradient through the conduit when available.
RESULTS: CT and MR work-up showed Contegra® stenosis (n = 12), dilatation (n = 9) and plicature or twist (n = 7). CT displayed thrombus or vegetations in the Contegra® in three clinically infected patients. Calcifications of the conduit were present at CT in 12 patients and valvular regurgitation in three patients. The comparison between CT and/or MR results showed a good correlation between the echographic gradient and the presence of stenosis in the Contegra®.
CONCLUSION: CT and MR bring additional information about permeability and postoperative anatomy especially when echocardiography is inconclusive. Both techniques depict the normal appearance of the conduit, and allow comparison and precise evaluation of changes in the postoperative follow-up.
Pubmed
Web of science
Create date
03/12/2014 16:25
Last modification date
20/08/2019 14:33
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