State-of-the-art<unk>  uses a swept-source laser to make OCT images at high-speed (i.e., approximately 80,000 kHz - A-scan lines per second) to complete acquisition of a 3D OCT volume of coronary segments in a few-seconds. The first intravascular FD-OCT was introduced to the market in 2009 (EU and Asia) and in 2012 (USA). In 2018, two<unk>  OCT catheters are clinically available for use in the coronary arteries, having a size in diameter between 2.4F and 2.7F. The basic principle of FD-OCT, is the use of interferometric techniques to measure the time-of-flight of light, emitted and collected from the imaging catheter to create cross-sectional images of arterial lumen and vessel wall. The axial resolution of state-of-the-art commercial systems is < 20 micro-meters, which is decoupled from the catheter lateral resolution. The highest resolution of OCT allows for the in vivo imaging of vessel microstructural features at an unprecedented level, enabling visualization of vessel wall atherosclerosis, pathology, and interaction with therapeutic devices at a microscopic level.
Intracoronary optical coherence tomography
Coronary CT calcium scan
Coronary CT angiography
Doppler echocardiography
Cardiac magnetic resonance imaging perfusion
Fractional flow reserve
Cardiac ventriculography
Tissue Doppler echocardiography