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Radiopacity of Coronary Stents, an In Vitro Comparative Study

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Abstract

Purpose

Interventional cardiology devices and especially stents are constantly evolving. A good radiopacity is essential to properly position the stent and to reduce the risk of complications during percutaneous coronary intervention (PCI). We wanted to assess the radiopacity of coronary stents.

Methods

9 stents were evaluated. Stents were deployed in a silicon bifurcation model and several pulsed fluoroscopy acquisitions (7.5 and 15 pulses/s) of each device were performed in a catheterization laboratory. Quantitative radiopacity assessment was performed using a radiopacity visual scale and qualitative radiopacity assessment was performed by showing the images to three experienced operators, single-blind.

Results

Our study showed statistically significant differences between stents regarding radiopacity assessed in a quantitative analysis (p < 0.000001) or a qualitative analysis (p < 0.000001), whether the acquisitions were made in 7.5 or 15 pulses/s. Resolute Onyx and Synergy were the most radio-opaque in both qualitative and qualitative analysis. Moreover, there was a statistically significant correlation between the radiopacity of stents, their strut thickness (p < 0.0001) and the presence of platinum in their metallic alloy (p < 0.0001).

Conclusion

This study highlighted significant differences in the radiopacity of coronary stents deployed in a bench test model. The strut thickness and the presence of platinum increased the radiopacity.

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Author information

Authors and Affiliations

  1. Department of Cardiology, Nantes University Hospital, Nantes, France

    Pierre-Guillaume Piriou, Patrice Guérin, Mickael Bonin, Julien Plessis, Vincent Letocart & Thibaut Manigold

  2. INSERM Unit 1229, Regenerative Medicine and Skeleton, Nantes, France

    Patrice Guérin & Fabienne Jordana

  3. Nantes School of Medicine, Nantes, France

    Béatrice Guy

  4. Service de Cardiologie, CHU de Nantes-Hôpital Nord Laënnec, Boulevard Professeur Jacques Monod, 44093, Nantes Cedex 1, France

    Pierre-Guillaume Piriou

Authors
  1. Pierre-Guillaume Piriou
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  2. Patrice Guérin
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  3. Mickael Bonin
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  4. Julien Plessis
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  5. Vincent Letocart
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  6. Thibaut Manigold
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  7. Béatrice Guy
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  8. Fabienne Jordana
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All authors have contributed to this manuscript.

Corresponding author

Correspondence to Pierre-Guillaume Piriou.

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The authors declare that they have no conflict of interest.

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Associate Editor Gautam Kumar oversaw the review of this article.

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Piriou, PG., Guérin, P., Bonin, M. et al. Radiopacity of Coronary Stents, an In Vitro Comparative Study. Cardiovasc Eng Tech 11, 719–724 (2020). https://doi.org/10.1007/s13239-020-00492-w

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  • DOI: https://doi.org/10.1007/s13239-020-00492-w

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