F. Mason Sones obtained in 1958 the first selective coronary angiography — initially by accident — and radically transformed the anatomical understanding of coronary disease. From that moment, coronary stenoses could be located, quantified, and therapeutically planned with a precision impossible until then. Coronary angiography is the diagnostic technology that makes both Favaloro's bypass and Grüntzig's angioplasty possible. In the cardiovascular graph, Sones is the great bridge between diagnosis, surgery, and interventional cardiology.