Effects of contrast medium viscosity into flushing port on artefacts during optical coherence tomography imaging.
J Cardiol
; 82(3): 194-200, 2023 09.
Article
en En
| MEDLINE
| ID: mdl-37209906
ABSTRACT
BACKGROUND:
Optical coherence tomography (OCT) is becoming the standard imaging modality for percutaneous coronary intervention (PCI) because of its high resolution. To perform appropriate OCT-guided PCI, it is necessary to avoid artefacts and obtain high-quality images. We investigated the relationship between artefacts and the viscosity of contrast media, which were used to remove air before OCT imaging catheter was inserted into guiding catheter.METHODS:
We retrospectively analyzed every pullback of OCT examinations from January 2020 to September 2021. Cases were divided into two groups according to the type of contrast media used for catheter flushing low-viscosity (Iopamidol-300, Bayer, Nordrhein-Westfalen, Germany) vs. high-viscosity (Iopamidol-370, Bayer). We evaluated the artefacts and quality of each OCT image and performed ex vivo experiments to compare differences in artefact frequencies using the two contrast media.RESULTS:
A total of 140 pullbacks in the low-viscosity group and 73 pullbacks in the high-viscosity group were analyzed. The percentage of grade 2 and 3 images (with good quality) in the low-viscosity group was significantly lower (68.1â¯% vs. 94.5â¯%, pâ¯<â¯0.001). Rotational artefacts were significantly more common in the low-viscosity group (49.3â¯% vs. 8.2â¯%, pâ¯<â¯0.001). In multivariate analysis, using low-viscosity contrast media was a significant factor influencing the appearance of rotational artefacts and affecting image quality (odds ratio, 9.42; 95â¯% confidence interval, 3.58 to 24.8; pâ¯<â¯0.001). In ex vivo experiments, using low-viscosity contrast media was also a significant predictor of artefact occurrence during OCT (pâ¯<â¯0.01).CONCLUSIONS:
The viscosity of the contrast agent used while flushing the OCT imaging catheter contributes to the appearance of OCT artefacts.Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Enfermedad de la Arteria Coronaria
/
Intervención Coronaria Percutánea
Tipo de estudio:
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Límite:
Humans
Idioma:
En
Revista:
J Cardiol
Asunto de la revista:
CARDIOLOGIA
Año:
2023
Tipo del documento:
Article
País de afiliación:
Japón