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.
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Abbreviations
- OCT:
-
Optical coherence tomography
- LAD:
-
Left anterior descending
- ROI:
-
Region of interest
- PCI:
-
Percutaneous coronary intervention
- CIL:
-
Clear imaging length
- CSL:
-
Clear stent length
- STEMI:
-
ST segment elevation myocardial infarction
- CTO:
-
Chronic total occlusion
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Dr. Bezerra receives consulting fees from Abbott Vascular, Inc. Other authors report no relevant conflicts of interest.
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Iarossi Zago, E., Samdani, A.J., Pereira, G.T.R. et al. An assessment of the quality of optical coherence tomography image acquisition. Int J Cardiovasc Imaging 36, 1013–1020 (2020). https://doi.org/10.1007/s10554-020-01795-8
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DOI: https://doi.org/10.1007/s10554-020-01795-8