Intravascular ultrasound (IVUS) and optical coherence tomography (OCT) have been developed and improved as both diagnostic and guidance tools for interventional procedures over the past three decades. IVUS has a resolution of 100 μm with a high tissue penetration and capability of assessing the entire structure of a coronary artery including the external elastic membrane, whereas OCT has a higher resolution of 10-20 μm to assess endoluminal structures with a limited tissue penetration compared to IVUS. Recently, two companies, CONAVI and TERUMO, integrated IVUS and OCT into a single catheter system. With their inherent strength and limitations, the combined IVUS and OCT probes are complementary and work synergistically to enable a comprehensive depiction of coronary artery. In this review, we summarize the performance of the two intracoronary imaging modalities-IVUS and OCT-and discuss the expected potential of the novel hybrid IVUS-OCT catheter system in the clinical field.
Keywords: hybrid IVUS–OCT catheter; intracoronary imaging; intravascular ultrasound; optical coherence tomography; percutaneous coronary intervention; vulnerable plaque.
Copyright © 2020 Ono, Kawashima, Hara, Gao, Wang, Kogame, Takahashi, Chichareon, Modolo, Tomaniak, Wykrzykowska, Piek, Mori, Courtney, Wijns, Sharif, Bourantas, Onuma and Serruys.