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. Author manuscript; available in PMC: 2016 Jan 1.
Published in final edited form as: Int J Pediatr Otorhinolaryngol. 2014 Nov 15;79(1):63–70. doi: 10.1016/j.ijporl.2014.11.009

Figure 3.

Figure 3

A) Shows an example of a good-quality axial LR-OCT image. Note there is strong signal intensity along the full circumference of the tissue border, the entirety of the tissue border lies within the image, and there is minimal specular reflection. Figure 3B-E shows examples of poor-quality LR-OCT airway images. B) Shows an example of an image obtained with a probe with low signal strength. C) Shows significant distortion due to non-uniform probe rotation as a result of excessive tissue pressure on the probe sheath. Note how narrow the ET tube (left side of image) appears compared to the ET tube in A. D) Shows the majority of the tissue contour (anterior pharyngeal wall) beyond the range of the probe due to large airway size and eccentric probe placement. E) Shows an image with too much specular reflection to identify the tissue contour.