Fig. 3From: Automated procedure assessing the accuracy of HRCT–PET registration applied in functional virtual bronchoscopyVisualisation of the bifurcation point, as it can be seen from the trachea. The segmented trachea defines the geometry, while the texture originates from the radioactivity accumulated in pixels located 10 mm or closer to the outer surface of the trachea (panel A). Real bronchoscopic photograph of the same carinal region (panel B)Back to article page