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. Author manuscript; available in PMC: 2020 Apr 4.
Published in final edited form as: Otolaryngol (Sunnyvale). 2019 Apr 4;9(2):366. doi: 10.4172/2161-119X.1000366

Figure 1:

Figure 1:

Three types of endoscopic probes commonly used in airway imaging: (A) proximal rotational probe based on a GRIN lens, (B) proximal rotational probe based on an all-fiber optic design, and (C) distal rotational probe based on micro-motor. All endoscopic probes are protected with a disposable plastic catheter (dotted line) to prevent direct contact with tissue.