Fig. 7
From: Paediatric multi-detector row chest CT: what you really need to know
Type 1 CPAM consists of a large cyst with multiple smaller cysts seen on the coronal MinIP image (a) causing mass effect with distortion to the remainder of the right lung parenchyma with mediastinal shift seen on the air bronchogram (b). Scanning parameters: 80 kV, 60 eff mAs, 60 ref mAs, 0.87 CTDIvol, 16 DLP. Type 2 CPAM with multiple cystic lesions in the right lower lobe is better defined on the coronal MinIP image (c) than on the MPR image (d). Scanning parameters: 80 kV, 51 eff mAs, 60 ref mAs, 0.76 CTDIvol, 12 DLP. Type 3 CPAM axial images (e, f) show an area of consolidation with adjacent region of hyperinflation. There is tubular lucency seen within this apical segment of the right lower lobe with air-trapping within the lesion as shown on the MinIP image (g). Scanning parameters: 80 kV, 60 eff mAs, 60 ref mAs, 0.90 CTDIvol, 18 DLP