intravascular ultrasound
Pronunciation: EYE-vus
Also written as: IVUS — Intravascular Ultrasound
A catheter-based imaging technique providing cross-sectional views of coronary arteries from within the vessel.
Full Definition
Intravascular ultrasound (IVUS) is an invasive imaging modality that uses high-frequency sound waves to create detailed cross-sectional images of coronary arteries from inside the vessel lumen. The technique involves advancing a miniaturized ultrasound transducer on a catheter into the coronary artery, providing real-time visualization of vessel wall structure, plaque characteristics, and stent deployment. IVUS offers superior assessment of vessel sizing, lesion length, plaque burden, and optimal stent expansion compared to angiography alone. The technology is particularly valuable for guiding complex interventions and assessing ambiguous angiographic findings.
Usage
Usage note: IVUS pronunciation as 'EYE-vus' is standard. Spell out on first use in non-specialist documentation.
In Context
- "Intravascular ultrasound confirmed optimal stent expansion with complete wall apposition." — Procedural report
- "The study protocol required intravascular ultrasound guidance for all stent deployments." — Clinical trial documentation