The standardized viewpoints on the tape were as follows: (1)
exoscopic view, frontal, turn 180°, posterior, turn 180°; (2)
exoscopic view close-ups, anterior projection-pan down trachea, right
bronchi, left bronchi, then posterior projection, right bronchi, left
bronchi; (3) endoscopic view, begin at tracheal inlet, trachea, right
lung bronchi, left lung bronchi; upper lobes, then middle lobe/lingula,
then lower lobes. Pull back virtual endoscope to bifurcation before
entering smaller branches.