Fig. 1From: Pulmonary arterial enlargement predicts cardiopulmonary complications after pulmonary resection for lung cancer: a retrospective cohort studyMeasurement of the diameters of the pulmonary artery and aorta. Axial chest computed tomographic image at the level of the bifurcation of the main pulmonary artery. Measurements of the diameter of the main pulmonary artery (PA) and that of the aorta (A) at the level of the bifurcation were used to calculate the PA/A ratio. Short arrows show the rises of the bilateral pulmonary arteries. It is the measuring point of the diameter of PABack to article page