[Radio-anatomic and microangiographic study of pulmonary systemic vascularization]

The systemic pulmonary vascularization of 26 subjects was studied by a microangiographic technique after total body injection by micropaque. By our microangiographic technique was observed an average of 2 bronchial arteries per subject whereas by dissection we found an average of 2,5. We also noticed in 80% of our subjects a right intercosto-bronchial trunk, in 15% a right bronchial artery, in 30% a common trunk for both left and right bronchial arteries, and an average of 1.2 left bronchial arteries per subject. Besides microangiography revealed: 1) Numerous and variable aspects of systemic intra-pulmonary vascularisation except for the trifurcation of the right bronchial artery. 2) The importance of the arterial network in the submucosa of segmental and subsegmental bronchi. 3) The vascular supply of the visceral pleura by bronchial vessels.