optical coherence tomography
Also written as: OCT — Optical Coherence Tomography
A high-resolution intravascular imaging technique using near-infrared light to assess coronary artery microstructure.
Full Definition
Optical coherence tomography (OCT) is an invasive imaging modality that uses near-infrared light to generate high-resolution cross-sectional images of coronary arteries with resolution approximately 10 times greater than IVUS. OCT provides detailed visualization of vessel wall architecture, plaque composition, stent strut coverage, and complications such as dissection or thrombus. The technique requires temporary blood displacement with contrast injection and is particularly valuable for assessing stent optimization and identifying vulnerable plaque characteristics. OCT has become an important tool for both clinical decision-making and research applications.
Usage
Usage note: Distinguish from ophthalmic OCT by specifying 'intravascular' or 'coronary' when context unclear.
In Context
- "Optical coherence tomography revealed incomplete stent apposition at the proximal edge." — Post-procedural imaging report
- "The thin-cap fibroatheroma was clearly identified using optical coherence tomography guidance." — Research study