Fig. 6
From: A review on diagnostic assessments of tracheal stenosis
Imaging process in endoscopic OCT: a OCT catheter in the airway, b output signal at one rotation angle, c output signals as a polar (top) or Cartesian image (bottom) representation, d stack of scans acquired during a pullback helical scan, e volumetric reconstruction of the airway derived from the pullback OCT image stack [68]