In vitro comparison of different carotid artery stents: a pixel-by-pixel analysis using CT angiography and contrast-enhanced MR angiography at 1.5 and 3 T.

Neuroradiology
Michael LettauStefan Hähnel

Abstract

CT angiography (CTA) and MR angiography (MRA) are increasingly used methods for evaluation of stented vessel segments. The purpose of this study was to compare CTA, contrast-enhanced MRA (CEMRA) at 1.5 T, and CEMRA at 3 T for the visualization of carotid artery stents and to define the best noninvasive imaging technique for each stent. CTA and CEMRA appearances of 18 carotid artery stents of different designs and sizes (4.0 to 10.0 mm) were investigated in vitro. The profile of the contrast-to-noise ratio (CNR) of the lumen of each stent was calculated semiautomatically by a pixel-by-pixel analysis using the medical imaging software OSIRIS. For each stent, artificial lumen narrowing (ALN) was calculated. In all but one stents, ALN was lower on CEMRA at 3 T than at 1.5 T. With CEMRA at 3 T and at 1.5 T, ALN in most nitinol stents was lower than in the groups of stainless steel and cobalt alloy stents. In most nitinol stents, ALN on CEMRA at 3 T was lower than on CTA. In all stainless steel stents and cobalt alloy stents, ALN was lower on CTA than on CEMRA. With CTA and CEMRA, in most stents ALN decreased with increasing stent diameter. CTA and CEMRA evaluation of vessel patency after stent placement is possible, but considerably...Continue Reading

References

Mar 1, 1990·AJR. American Journal of Roentgenology·C M AndersonR E Lee
Apr 1, 1994·Radiology·M R Prince
Apr 5, 2001·Journal of Vascular and Interventional Radiology : JVIR·L W BartelsM A Viergever
Oct 19, 2001·Investigative Radiology·J M MeyerR W Guenther
Jan 5, 2002·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Lambertus W BartelsMax A Viergever
Jan 29, 2003·Journal of Cardiovascular Magnetic Resonance : Official Journal of the Society for Cardiovascular Magnetic Resonance·Andrea HoltonRamakrishna Venugopalan
Apr 22, 2003·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Yi WangMartin R Prince
Feb 19, 2005·RöFo : Fortschritte auf dem Gebiete der Röntgenstrahlen und der Nuklearmedizin·T StraubeO Jansen
Nov 5, 2005·Journal of Magnetic Resonance Imaging : JMRI·Alexander WallDavid Maintz
Dec 8, 2005·European Radiology·David MaintzRoman Fischbach
May 31, 2006·Journal of Neuroradiology. Journal De Neuroradiologie·S HähnelS Heiland
Feb 10, 2009·Neuroradiology·I Q GrunwaldW Reith

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Citations

Jun 4, 2010·Der Radiologe·W Reith, C Roth
Jan 15, 2014·Journal of Neuroradiology. Journal De Neuroradiologie·Michael LettauStefan Hähnel
Jun 21, 2013·Journal of Cardiovascular Magnetic Resonance : Official Journal of the Society for Cardiovascular Magnetic Resonance·Sarah N KhanJ Paul Finn
May 11, 2013·Journal of Neuroradiology. Journal De Neuroradiologie·Michael LettauStefan Hähnel
Oct 16, 2016·Biomedizinische Technik. Biomedical Engineering·Andreas HeinrichUlf K-M Teichgräber

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