Investigations of injection strategies to use heparinized normal saline instead of contrast media for intracoronary optical coherence tomography imaging.

Background: The benefits of intravascular imaging-guided percutaneous coronary interventions (PCI) are well established. Intravascular imaging guidance improves short- and long-term outcomes, especially in complex PCI. Optical coherence tomography (OCT) has a higher resolution than intravascular ultrasound.