Suitability of 7 aortic stent-graft models for MRI-based surveillance.
Publication year
2004Source
Journal of Endovascular Therapy, 11, 4, (2004), pp. 366-371ISSN
Publication type
Article / Letter to editor

Display more detailsDisplay less details
Organization
Surgery
Journal title
Journal of Endovascular Therapy
Volume
vol. 11
Issue
iss. 4
Page start
p. 366
Page end
p. 371
Subject
UMCN 2.1: Heart, lung and circulationAbstract
PURPOSE: To evaluate the magnetic resonance imaging (MRI) characteristics of commercially available stent-grafts used for abdominal aortic aneurysm repair. METHODS: Seven endovascular grafts (AneuRx, Lifepath, Talent, Excluder, Zenith, Quantum LP, and Ancure) were suspended in a water bath containing gadolinium and scanned using a 1.5-T clinical MRI scanner. Two different scan techniques (T(1)-weighted spoiled gradient echo and spin echo) based upon a clinical MRI endograft surveillance protocol were used for each stent-graft. The scans were evaluated for susceptibility artifacts and radiofrequency (RF) shielding and caging artifacts. RESULTS: For most endografts, the lumen and structures surrounding the endograft were well visualized. However, the ferromagnetic properties of the Zenith and Lifepath devices resulted in large susceptibly artifacts that obliterated the endograft lumen as well as adjacent structures. All fully supported grafts showed some amount of signal loss from the graft lumen caused by RF caging. For the Ancure graft, evaluation around the attachment sites might be problematic. CONCLUSIONS: An MRI-based surveillance protocol appears to be a viable option for the AneuRx, Talent, Excluder, and Quantum LP stent-grafts.
This item appears in the following Collection(s)
- Academic publications [202603]
- Electronic publications [100732]
- Faculty of Medical Sciences [79949]
- Open Access publications [69477]
Upload full text
Use your RU credentials (u/z-number and password) to log in with SURFconext to upload a file for processing by the repository team.