OCT
Also written as: OCT — Optical Coherence Tomography
High-resolution intracoronary imaging modality using near-infrared light to provide detailed visualization of coronary vessel microstructure.
Full Definition
Optical coherence tomography (OCT) is an advanced intracoronary imaging technique that uses near-infrared light to generate extremely high-resolution cross-sectional images of coronary arteries. OCT provides superior resolution compared to IVUS, allowing detailed assessment of vessel wall morphology, plaque characteristics, stent strut apposition, and neointimal coverage. The technique is particularly valuable for detecting thin-cap fibroatheromas, assessing stent deployment quality, and identifying complications such as edge dissection or tissue prolapse that may not be visible on conventional angiography.
Usage
Usage note: Always capitalize as OCT; distinguish from optical coherence angiography (OCTA) used in ophthalmology.
In Context
- "OCT demonstrated complete strut apposition with minimal neointimal hyperplasia at six-month follow-up." — Follow-up catheterization report
- "The OCT pullback revealed a thin-cap fibroatheroma with a fibrous cap thickness of 45 micrometers." — Research publication on vulnerable plaque