An assessment of the quality of optical coherence tomography image acquisition

Elder Iarossi Zago, Abdul Jawwad Samdani, Gabriel Tensol Rodrigues Pereira, Armando Vergara-Martel, Mohamad Amer Alaiti, Luis Augusto Dallan, Patricia Ely Pizzato, Vladislav Zimin, Anas Fares, Hiram G. Bezerra

Research output: Contribution to journalArticle

Abstract

Optical coherence tomography (OCT) provides excellent image resolution, however OCT optimal acquisition is essential but could be challenging owing to several factors. We sought to assess the quality of OCT pullbacks and identify the causes of suboptimal image acquisition. We evaluated 784 (404 pre-PCI; 380 post-PCI) coronary pullbacks from an anonymized OCT database from our Cardiovascular Imaging Core Laboratory. Imaging of the region-of-interest (ROI—lesion or stented segment plus references) was incomplete in 16.1% pullbacks, caused by pullback starting too proximal (63.7%), inappropriate pullback length (17.1%) and pullback starting too distal (11.4%). The quality of image acquisition was excellent in 36.3% pullbacks; whereas 4% pullbacks were unanalyzable. Pullback quality was most commonly affected by poor blood displacement from inadequate contrast volume (27.4%) or flow (25.6%), followed by artifacts (24.1%). Acquisition mode was ‘High-Resolution’ (54 mm) in 74.4% and ‘Survey’ (75 mm) in 25.6% of cases. The 54 mm mode was associated with incomplete ROI imaging (p = 0.020) and inadequate contrast volume (p = 0.035). We observed a substantial frequency of suboptimal image acquisition and identified its causes, most of which can be addressed with minor modifications during the procedure, ultimately improving patient outcomes.

Original languageEnglish (US)
Pages (from-to)1013-1020
Number of pages8
JournalInternational Journal of Cardiovascular Imaging
Volume36
Issue number6
DOIs
StatePublished - Jun 1 2020

Keywords

  • Image acquisition
  • Intravascular imaging
  • Optical coherence tomography

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Cardiology and Cardiovascular Medicine

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  • Cite this

    Iarossi Zago, E., Samdani, A. J., Pereira, G. T. R., Vergara-Martel, A., Alaiti, M. A., Dallan, L. A., Ely Pizzato, P., Zimin, V., Fares, A., & Bezerra, H. G. (2020). An assessment of the quality of optical coherence tomography image acquisition. International Journal of Cardiovascular Imaging, 36(6), 1013-1020. https://doi.org/10.1007/s10554-020-01795-8