Cardiac interventionalists may be overusing expensive imaging technology during one of the most critical heart procedures. The debate centers on whether intravascular ultrasound (IVUS) guidance is essential for every left main coronary artery intervention, or if skilled operators can achieve equivalent outcomes using standard angiographic visualization alone. Left main disease affects the heart's most crucial vessel, supplying blood to the majority of the left ventricle, making procedural precision paramount. Current practice varies widely, with some centers mandating IVUS for all left main cases while others rely primarily on angiographic guidance. The technology provides detailed cross-sectional images of vessel walls and stent deployment, theoretically improving outcomes through better lesion assessment and stent optimization. However, emerging evidence suggests that in experienced hands, angiography-guided procedures may achieve similar clinical results. This challenges the assumption that more advanced imaging always translates to better patient outcomes. The implications extend beyond individual patient care to healthcare economics and procedural efficiency. IVUS adds significant cost and procedure time, considerations that become magnified across large patient populations. For interventional cardiology, this represents a classic example of technology adoption outpacing definitive evidence. The field has witnessed similar debates with other imaging modalities, where initial enthusiasm based on mechanistic reasoning later required validation through rigorous clinical trials. The left main artery's unique anatomy and critical importance may indeed warrant advanced imaging in complex cases, but routine use across all patients remains scientifically unproven. This evolving perspective could reshape training protocols and procedural standards, potentially reducing both costs and radiation exposure while maintaining optimal patient outcomes.