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Assessment of coronary artery stents by 16 slice computed tomography.

Abstract : OBJECTIVE: To analyse coronary stents with multislice spiral computed tomography (MSCT) in comparison with coronary angiography. PATIENTS AND METHODS: 310 patients referred for conventional coronary angiography underwent MSCT on the next day (16 x 0.75 mm cross section, 420 ms rotation, 110 ml contrast agent intravenously at 4 ml/s). Two independent blinded reviewers analysed the MSCT. RESULTS: 143 patients had previous stenting (232 stents) and 190 (82%) of the 232 stents were detected. Intrastent lumen was interpretable in 126 (64%) of the detected stents. Lumen interpretability depended on stent diameter: for stent diameter > 3 mm, 81% of lumens were interpretable, as against 51% with < or = 3 mm stent diameter (p < 0.001). Restenosis detection likewise depended on stent diameter: with small stents (< or = 3 mm), sensitivity and specificity of MSCT were 54% and 100%, respectively; positive and negative predictive values were 100% and 94%. For stents with > 3 mm diameter, corresponding values were 86%, 100%, 100%, and 99%. CONCLUSION: 16 slice MSCT allows analysis of in-stent lumen in about half of all stented angioplasties. It performs better when stent diameter is more than 3 mm and may offer a non-invasive alternative to conventional coronary angiography for monitoring stented coronary arteries. Technical progress may improve interpretability and hence increase the yield of MSCT in this application.
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https://hal.univ-brest.fr/hal-00688305
Contributor : Ghislaine Calvez <>
Submitted on : Tuesday, April 17, 2012 - 1:00:44 PM
Last modification on : Thursday, November 29, 2018 - 4:09:31 PM

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Martine Gilard, Jean-Christophe Cornily, Pierre-Yves Pennec, Grégoire Le Gal, Michel Nonent, et al.. Assessment of coronary artery stents by 16 slice computed tomography.. British heart journal, BMJ Publishing Group, 2006, 92 (1), pp.58-61. ⟨10.1136/hrt.2004.056010⟩. ⟨hal-00688305⟩

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