open access

Vol 27, No 5 (2020)
Original articles — Interventional cardiology
Published online: 2018-11-14
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Reproducibility of optical coherence tomography in vein grafts used for coronary revascularization

Øystein Pettersen, Elżbieta Pociask, Krzysztof P. Malinowski, Magdalena Slezak, Knut Hegbom, Rune Wiseth, Dag Ole Nordhaug
DOI: 10.5603/CJ.a2018.0139
·
Pubmed: 30444258
·
Cardiol J 2020;27(5):518-523.

open access

Vol 27, No 5 (2020)
Original articles — Interventional cardiology
Published online: 2018-11-14

Abstract

Background: Optical coherence tomography (OCT) is a high-resolution imaging modality able to provide near-histological images of vessel walls making it possible to distinguish intima and media layers of the vessel wall separately. The use of this imaging technique is increasing while data on the variability and reliability is lacking. The aim of this study was to investigate the reproducibility of frequency-domain OCT in vein grafts used for coronary revascularization.

Methods:
Five pullbacks were analyzed by the same analyst with a 1-month delay (intraobserver) and by two different analysts (interobserver). Five pairs of pullbacks from the same catheters and vein graft were also analyzed (inter pullback).

Results:
Optical coherence tomography showed low variability in intra- and interobserver analysis with relative differences of mean media and intima thicknesses and areas of less than 5% for most parameters.
Relative differences of the same parameters in the inter pullback analysis were in the 5–15% range. Intra- and interobserver reliability was excellent (intraclass correlation coefficient [ICC] > 0.90) for intima thickness and intima, media and intima-media area measurements. Inter pullback reliability was good (ICC: 0.75–0.90) for intima and intima-media area measurements, and moderate to good for mean intima thickness measurements (ICC: 0.79; 0.7338–0.8284).

Conclusions:
Optical coherence tomography provides good reproducibility for the measurements of parameters relevant for the development of atherosclerosis in vein grafts.

Clinical trial registration: ID NCT01834846.

Abstract

Background: Optical coherence tomography (OCT) is a high-resolution imaging modality able to provide near-histological images of vessel walls making it possible to distinguish intima and media layers of the vessel wall separately. The use of this imaging technique is increasing while data on the variability and reliability is lacking. The aim of this study was to investigate the reproducibility of frequency-domain OCT in vein grafts used for coronary revascularization.

Methods:
Five pullbacks were analyzed by the same analyst with a 1-month delay (intraobserver) and by two different analysts (interobserver). Five pairs of pullbacks from the same catheters and vein graft were also analyzed (inter pullback).

Results:
Optical coherence tomography showed low variability in intra- and interobserver analysis with relative differences of mean media and intima thicknesses and areas of less than 5% for most parameters.
Relative differences of the same parameters in the inter pullback analysis were in the 5–15% range. Intra- and interobserver reliability was excellent (intraclass correlation coefficient [ICC] > 0.90) for intima thickness and intima, media and intima-media area measurements. Inter pullback reliability was good (ICC: 0.75–0.90) for intima and intima-media area measurements, and moderate to good for mean intima thickness measurements (ICC: 0.79; 0.7338–0.8284).

Conclusions:
Optical coherence tomography provides good reproducibility for the measurements of parameters relevant for the development of atherosclerosis in vein grafts.

Clinical trial registration: ID NCT01834846.

Get Citation

Keywords

coronary artery disease, saphenous vein graft, intimal hyperplasia

About this article
Title

Reproducibility of optical coherence tomography in vein grafts used for coronary revascularization

Journal

Cardiology Journal

Issue

Vol 27, No 5 (2020)

Pages

518-523

Published online

2018-11-14

DOI

10.5603/CJ.a2018.0139

Pubmed

30444258

Bibliographic record

Cardiol J 2020;27(5):518-523.

Keywords

coronary artery disease
saphenous vein graft
intimal hyperplasia

Authors

Øystein Pettersen
Elżbieta Pociask
Krzysztof P. Malinowski
Magdalena Slezak
Knut Hegbom
Rune Wiseth
Dag Ole Nordhaug

References (19)
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