High-Definition Intravascular Ultrasound Versus Optical Coherence Tomography: Lumen Size and Plaque Morphology

The latest HD IVUS (Avvigo+) tends to overestimate lumen size, whereas OCT (Ultreon 2.0) underestimates it. Experimental data suggest HD IVUS provides more accurate lumen assessment, particularly in larger coronary arteries, although both technologies exhibit comparable overall accuracy in the clinical setting.