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Historically, percutaneous coronary intervention (PCI) has been guided by coronary angiography. In recent years, numerous clinical trials have demonstrated that intracoronary imaging using intravascular ultrasound (IVUS) can provide more accurate measurements of coronary artery dimensions and visualize structures that coronary angiography cannot — atherosclerotic plaque, stent underexpansion, and localized coronary dissections — leading to improved PCI outcomes. Optical coherence tomography (OCT) is another form of intravascular imaging that provides higher resolution and superior plaque imaging than IVUS, but its impact on PCI outcomes remains unknown.
In the industry-sponsored, multinational, single-blind ILUMIEN-4 trial (NCT03507777), inv…