Fig. 6.

Illustration of the necessity for branch addition (case 24). a Endoluminal rendering at a view site near a bronchial generation 8 airway along the route (blue line). b Same view as (a) after applying branch addition to add a missing thin child airway; note the new added centerline for this branch (red line). c A video frame captured with a 2.8-mm Olympus XP160F ultrathin bronchoscope during live image-guided bronchoscopy to the same site as (a, b) confirms the need for the additional branch