Real-Time IVUS-Guided Wiring With a Dual-Lumen Microcatheter for Blunt Proximal Cap CTO: Procedural Technique and Comparative Outcomes.
BACKGROUND Percutaneous coronary intervention (PCI) for chronic total occlusions (CTOs) with blunt proximal caps is technically challenging due to unclear vessel morphology. Real-time intravascular ultrasound (IVUS) guidance can improve wire entry accuracy; however, its application with conventional pull-back IVUS syst...