Artifact-free coronary magnetic resonance angiography and coronary vessel wall imaging in the presence of a new, metallic, coronary magnetic resonance imaging stent.

Details

Serval ID
serval:BIB_7F44923674FB
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Artifact-free coronary magnetic resonance angiography and coronary vessel wall imaging in the presence of a new, metallic, coronary magnetic resonance imaging stent.
Journal
Circulation
Author(s)
Spuentrup E., Ruebben A., Mahnken A., Stuber M., Kölker C., Nguyen T.H., Günther R.W., Buecker A.
ISSN
1524-4539[electronic], 0009-7322[linking]
Publication state
Published
Issued date
2005
Volume
111
Number
8
Pages
1019-1026
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Abstract
BACKGROUND: Coronary in-stent restenosis cannot be directly assessed by magnetic resonance angiography (MRA) because of the local signal void of currently used stainless steel stents. The aim of this study was to investigate the potential of a new, dedicated, coronary MR imaging (MRI) stent for artifact-free, coronary MRA and in-stent lumen and vessel wall visualization. METHODS AND RESULTS: Fifteen prototype stents were deployed in coronary arteries of 15 healthy swine and investigated with a double-oblique, navigator-gated, free-breathing, T2-prepared, 3D cartesian gradient-echo sequence; a T2-prepared, 3D spiral gradient-echo sequence; and a T2-prepared, 3D steady-state, free-precession coronary MRA sequence. Furthermore, black-blood vessel wall imaging by a dual-inversion-recovery, turbo spin-echo sequence was performed. Artifacts of the stented vessel segment and signal intensities of the coronary vessel lumen inside and outside the stent were assessed. With all investigated sequences, the vessel lumen and wall could be visualized without artifacts, including the stented vessel segment. No signal intensity alterations inside the stent when compared with the vessel lumen outside the stent were found. CONCLUSIONS: The new, coronary MRI stent allows for completely artifact-free coronary MRA and vessel wall imaging.
Keywords
Animals, Artifacts, Copper/chemistry, Coronary Vessels/anatomy & histology, Gold/chemistry, Magnetic Resonance Angiography/methods, Magnetic Resonance Angiography/trends, Organometallic Compounds/chemistry, Organometallic Compounds/therapeutic use, Palladium/chemistry, Platinum/chemistry, Silver/chemistry, Stents/classification, Swine
Pubmed
Web of science
Create date
02/03/2010 16:04
Last modification date
20/08/2019 14:40
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