A novel dedicated quantitative coronary analysis methodology for bifurcation lesions.

AIMS: To develop a novel dedicated quantitative coronary analysis (QCA) for bifurcations. METHOD AND RESULTS: A dedicated software that has minimal user interaction so as to increase the QCA results reproducibility. The new CAAS 5 bifurcation software combines established algorithm for contour detection with novel ways to determine the lesion characteristics together with the angulation of the bifurcation. CONCLUSION: The paper describes how this methodology is accomplished and reported.