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NCT Number: NCT07293858

Optical Coherence Tomography: Prognostic Value and Artificial Intelligence

This study aims to evaluate the prognostic value of optical coherence tomography (OCT) imaging of the coronary arteries. OCT provides high-resolution images of the vessel wall and stented segments during routine cardiac catheterization. All patients who undergo OCT as part of their clinical care are invited to participate in this prospective registry.

The study will examine whether specific OCT-derived characteristics-such as plaque morphology, vulnerable features, or indicators of stent optimization-are associated with long-term clinical outcomes. Follow-up information on symptoms, medication use, hospitalizations, cardiac procedures, and major cardiac events will be collected through medical records, questionnaires, and national registry data over a period of up to 10 years.

In addition, pseudonymized OCT pullbacks will be used to support the development of an artificial intelligence (AI) algorithm for automated annotation of OCT images. This algorithm may help improve the clinical interpretation of OCT by identifying relevant imaging features in a consistent and efficient manner.

Participation is voluntary and includes permission to use clinical data, OCT images, and follow-up information for research purposes. Data are coded to protect participant privacy and stored securely according to applicable regulations. The results of this study may contribute to better understanding of coronary plaque characteristics and may support improved decision-making in interventional cardiology.

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Key information

Sex eligibility

All sexes

Study type

Observational

Primary location

Radboudumc

Nijmegen, Gelderland, 6525GA, Netherlands

Location status: Recruiting

Location contact

Niels van Royen, Prof. dr.

CONTACT

[email protected]

+31243614533

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • All consecutive patients undergoing intracoronary OCT imaging at the Radboud University Medical Center, and any additional centers that may join the study in the future.
  • OCT performed at the discretion of the treating physician, according to contemporary clinical guidelines.
  • Written informed consent obtained after the procedure.

Exclusion criteria

  • Patients who decline or are unable to provide informed consent. (Only patients who provide consent can be included.
  • Patients for whom follow-up or data collection is not feasible (e.g., no valid contact details).

Treatment and study plan

Primary outcomes

  1. Relationship between OCT-derived plaque and stent characteristics and long-term clinical outcomes

    Time frame: 10 years

    Assessment of whether specific OCT-derived characteristics-such as plaque morphology, vulnerable features, stent deployment quality, and other intraluminal or vessel wall findings-are associated with long-term clinical outcomes. Outcomes include cardiac symptoms, cardiac events, coronary interventions, hospitalization, and death, based on medical records, questionnaire data, and national registries.

Secondary outcomes

  1. Performance of an automated OCT annotation algorithm

    Time frame: Baseline (OCT acquisition) to algorithm development period (≤5 years)

    Evaluation of the accuracy and feasibility of an AI-based algorithm for automated annotation of OCT pullbacks. Pseudonymized OCT images will be used to train and validate automated detection of plaque features, stent characteristics, and other relevant imaging markers. Comparison will be made with expert manual annotation.

Study contacts

Contact information is provided by the study sponsor or research team.

Joske L. van der Zande

CONTACT

[email protected]

0622997212 ext. +31611469960

Sponsors and collaborators

Lead sponsor

Radboud University Medical Center

Other

Registry information

Acronym: ORANGE

Important dates

Study start
2021
Primary completion
2028
Study completion
2028
First posted
Dec 19, 2025
Registry last updated
Dec 19, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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