ABSTRACT
Intracoronary optical coherence tomography (OCT) is a catheter-based imaging technology that employs near-infrared light. This chapter focuses on how to obtain clearer and more correct OFDI images in vivo. In the FD-OCT intravascular imaging system, the image is collected from pullback using a nonocclusive technique. The procedures of both FD-OCT types are almost the same, except for purging the catheter sheath with contrast media. OCT applies near-infrared light and constructs the images by the interference pattern of reflected light from samples and the reference. The refractive index is a dimensionless number that describes how light propagates through a medium. Lesions with rich collateral blood flow and coronary ostium lesions are not feasible because complete blood clearance is inadequate OCT can provide us detailed information and let us make better decisions for coronary therapeutic intervention. However, incorrect assessments and information potentially lead us to make the wrong decisions.
