Abstract 3048: A New Stainless-Steel-Free Stent with a Potential of Artifact-Free Magnetic Resonance Compatibility: First Clinical Experience
Background: Magnetic resonance of the heart is being increasingly used in cardiology practice. While perfusion studies and ,,late enhancement“ have become established practice, non-invasive cardioangiography with cardio-MRT is still in the development stage. Within this context, it has become desirable to develop coronary stents which do not–as opposed to stainless steel stents– create image artifacts in MRT images Based on its special material properties, niobium may be the potential solution due to being completely free of stainless steel components. In a previously presented randomized study it was shown that niobium stents are safe and do not increase in-stent restenosis. The objective of the present study is to assess the application and restenosis rates of niobium stents (LunarRox)
Methods: We investigated 116 patients in a total of 10 centers. The stents were available in diameters of 2.75-mm, 3.0-mm und 3.5-mm and in lengths of 12, 16 und 20 mm.
Results: 79% of the investigators evaluated the material properties of the niobium stent as ”better“compared with stainless steel stents. The very good x-ray visibility was deemed advantageous by 97.4% of the investigators. Clinical follow-up was performed in 100% of the patients: the clinical restenosis rate was 7.7% (9/116).
Conclusions: The new stainless-steel-free niobium stent with an increased x-ray visibility is safe and shows a high technical success rate. Its clinical restenosis rate is a mere 7.7%. Due to its properties, the niobium stent has the potential to allow non-invasive cardioangiography with magnetic resonance imaging.