Fig. 8.

Human airway sample measured ex vivo. B-scan view of (a) OCT intensity image, (b) local phase retardation and (c) local optic axis orientation. En face views of (d, g) OCT intensity image, (e, h) local phase retardation and (f, i) local optic axis orientation of the layer approximately 180 μm and 420 μm deep into the sample from the tissue surface, respectively. (Full-depth en face view video clip available online: Visualization 8 ^{(7.5MB, mp4)} ). (a-c) correspond to the dashed red lines in (d-i). (j) H&E histology image with ASM indicated by arrows. M: Mucosa; ASM: Airway smooth muscle. Small blue regions in (e) are artifacts due to strong reflections from the sample surface. Scale bar: 500 μm (physical length).