Aortic ostia of the bronchial arteries and tracheal bifurcation: MDCT analysis

Table 1 Relation between bronchial arteries ostia from aorta and tracheal bifurcation n (%)

Level from tracheal bifurcation (cm)	Right bronchial artery	Left bronchial artery	Common tract artery
≥ 4, < 4.5	0 (0)	0 (0)	2 (6)
≥ 3.5, < 4	2 (2)	0 (0)	1 (3)
≥ 3, < 3.5	0 (0)	0 (0)	0 (0)
≥ 2.5, < 3	7 (7)	5 (8)	2 (6)
≥ 2, < 2.5	7 (7)	4 (6)	2 (6)
≥ 1.5, < 2	14 (15)	9 (14)	3 (8)
≥ 1, < 1.5	17 (18)	3 (5)	6 (17)
≥ 0.5, < 1	15 (16)	10 (15)	2 (6)
≥ 0, < 0.5	14 (15)	20 (30)	7 (19)
≥ -0.5, < 0	6 (6)	6 (9)	1 (3)
≥ -1, < -0.5	7 (7)	6 (9)	6 (17)
≥ -1.5, < -1	3 (3)	0 (0)	4 (11)
≥ -2, < -1.5	1 (1)	3 (5)	0 (0)
≥ -2.5, < -2	0 (0)	0 (0)	0 (0)
≥ -3, < -2.5	2 (2)	0 (0)	0 (0)
Total (n = 197)	95	66	36