This tool can be used to guide coronary bifurcation sizing. It uses the Taylor Morris law, which relates diameters by an exponent of 2.39. This exponent was derived from meta analysis of morphometric data from over 1000 coronary trees.

Taylor, D.J., Saxton, H., Halliday, I., Newman, T., Hose, D.R., Kassab, G.S., Gunn, J.P. and Morris, P.D., 2024. A systematic review and meta-analysis of Murray's Law in the Coronary Arterial Circulation. American Journal of Physiology-Heart and Circulatory Physiology.