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Percutaneous coronary intervention (PCI) of chronic total occlusions (CTO) is often enhanced by the presence of intravascular ultrasound (IVUS). Between 2012 and 2022, 39 centers performed 8983 CTO PCIs on 8771 patients, a study we analyzed. IVUS was employed in 445 percent of all instances, used for crossing vessels in 115 percent of those cases, and for stent optimization in 331 percent of situations. Complex lesions, characterized by a h