What is Optical Coherence Tomography (OCT)?

What is an Optical Coherence Tomography (OCT)?

Optical Coherence Tomography (OCT) is where images are when very high-resolution images are taken from within the artery using light.

A fine imaging probe is passed down the artery of interest.  The blood is replaced with clear fluid and an image is taken as the probe is withdrawn.


An alternative way of assessing the architecture of an artery wall is through Intravascular Ultrasound (IVUS).

Related Conditions and Procedures

What Is Intravascular Ultrasound (IVUS)?

IVUS images the coronary arteries using high-definition ultrasound images

What Is Fractional Flow Reserve (FFR)?

Fractional Flow Reserve measures the pressure beyond a coronary blockage to assess the severity.

What Is a CT Coronary Angiogram (CTCA)?

Images the coronary arteries with CT

What Is a Coronary Angiogram?

Takes x-ray images of the coronary arteries.

What Is a Cardiac Cath?

Images the coronary arteries by directly injecting x-ray dye