Clinical Application of a Dual-Threshold Bolus Tracking Protocol in One-Stop Combined CT Angiography and Venography of the Lower Extremities: A Prospective Comparative Observational Study
This prospective comparative study demonstrates that a personalized dual-threshold bolus tracking protocol significantly improves venous image quality and diagnostic yield in one-stop lower extremity CTA-CTV compared to a fixed-delay approach, while maintaining equivalent arterial enhancement and radiation dose.