Fig. 12

Geometry of the pulmonary bifurcation after Lecompte maneuver. (A). Volume rendered 3D reconstruction showing that the pulmonary side branches runs around the aortic root. An external impression on the proximal course of the pulmonary arteries can occur. (B) Coronal view of the geometric relation between ascending aorta and pulmonary arteries (RPA **, LPA *). Note the oval shape of the pulmonary arteries, with the broader diameter in the cranio-caudal direction and slimmer diameter in the lateral direction. Ao  ascending aorta, LPA  left pulmonary artery, RPA right pulmonary artery