Fig. 5
From: Paediatric multi-detector row chest CT: what you really need to know
Surface shaded display of the intra-luminal surface of the trachea (a–b) seen superiorly towards the carina. The images show marked AP compression of the trachea. Axial image (c) confirms the tracheal compression between the innominate artery anteriorly and a dilated oesophagus posteriorly. Scanning parameters: 80 kV, 35 eff mAs, 150 ref mAs, 0.58 CTDIvol, 9 DLP