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Fig. 3 | European Radiology Experimental

Fig. 3

From: Comparison of the rebuilding effects of different computed tomography scanners and reconstructive settings for the five-line sign in normal interlobular fissures

Fig. 3

a Images from 256-slice spiral computed tomography (CT). a1-3 Standard-algorithm-generated images obtained from the same individual. Width of the lung window, 1000 Hounsfield units (HU); window level, − 700 HU. a1 Axial maximum intensity projection (MIP)-rendering with a 5-mm slab thickness showing the lower segment of the right major fissures as a low-density band shadow with a blurred edge. No five-line sign was visible (white arrow). a2 MIP reconstruction at the same location as a1 except the scan was from an oblique coronal position. The five-line sign of the lower segment of the right major fissures was still unclear (white arrow). a3 Axial 1.0-mm thin-section image of the same location as in a1 and a2. The lower segment of the right major fissure is manifested as a low-density line with a blurred edge (white arrow). b Images from 16-slice spiral CT. b1 and b2 Transverse images from the same individual; width of the lung window, 1000 HU; window level: − 700 HU. b1 Axial MIP reconstruction with 5-mm slab thickness and a high-resolution algorithm. The five-line sign of the upper segment of the right major fissure was barely clear, and some lines were visible (black arrow). b2 Same location as in b1; axial MIP reconstruction with 5-mm slab thickness and the standard axial algorithm. The five-line sign of the upper segment of the right major fissure was clearly presented (black arrow)

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