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The International Journal of Cardiovascular Imaging

, Volume 30, Issue 7, pp 1225–1233 | Cite as

Reproducibility of the Carpet View system: a novel technical solution for display and off line analysis of OCT images

  • Alex Gabriele
  • Valeria Marco
  • Laura Gatto
  • Giulia Paoletti
  • Luca Di Vito
  • Fausto Castriota
  • Enrico Romagnoli
  • Andrea Ricciardi
  • Francesco Prati
Original Paper

Abstract

The optical coherence tomography (OCT) evaluation of the stent anatomy requires the inspection of sequential cross section (CS). However stent coils cannot be appreciated in the conventional format as the OCT CS simply display stent struts, that are poorly representative of the stent architecture. The aim of the present study was to validate a new software (Carpet View), which unfolds the stented segment, reconstructing it as an open structure and displaying the stent meshwork. 21 patients were studied with frequency domain OCT after the deployment of different stents: seven bio-absorbable scaffolds (Dream), seven bare metal stent (Vision/Multilink8), seven drug eluting stent (Cre8). Conventional CS reconstructions were post-processed with the Carpet View software and analyzed by the same reader twice (intra-observer variability) and by two different readers (inter-observer variability). A small average difference in the number of all struts was obtained with the two methods (conventional vs carpet view reconstruction). Using the carpet view, high intra-observer and inter-observer correlations were found for the number of struts obtained in each coil. The Pearson correlation values were 0.98 (p = 0.0001) and 0.96 (p = 0.0001) respectively. The same number of coils was found when analyses were repeated by the same reader or by a different reader whilst mild differences in the count of stent junctions were reported. The Carpet View can be used to address the stent geometry with high reproducibility. This approach enables the matching of the same stent portion during serial time points and promises to improve the stent assessment.

Keywords

Optical coherence tomography Stent Percutaneous transluminal coronary angioplasty Coronary artery disease 

Notes

Acknowledgments

This study was supported by the Centro per la Lotta contro l’Infarto - Fondazione Onlus, Rome, Italy.

Conflict of interest

The authors have no conflict of interest to declare.

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Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  • Alex Gabriele
    • 1
  • Valeria Marco
    • 1
  • Laura Gatto
    • 1
    • 2
  • Giulia Paoletti
    • 1
  • Luca Di Vito
    • 1
    • 2
  • Fausto Castriota
    • 3
  • Enrico Romagnoli
    • 1
  • Andrea Ricciardi
    • 1
  • Francesco Prati
    • 1
    • 2
  1. 1.Centro per la Lotta contro l’Infarto - Fondazione OnlusRomeItaly
  2. 2.Department of Interventional CardiologySan Giovanni-Addolorata HospitalRomeItaly
  3. 3.GVM Care and ResearchEttore Sansavini Health Science FoundationCotignolaItaly

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