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. 2020 May 12;13(4):389–395. doi: 10.21053/ceo.2019.01305

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Copyright © 2020 by Korean Society of Otorhinolaryngology-Head and Neck Surgery

This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 1. — (A) Photographs of the balloon catheter (arrow), guide catheter (arrowhead), and inflation device (asterisk). (B) Distal end of the balloon catheter, comprising an electromagnetic navigation sensor (arrow), a balloon (16 mm in length and 6 mm in diameter at 12 atm; arrowhead), and a black proximal balloon marker (asterisk). (C) Cross-sectional view of the balloon catheter consisting of an electromagnetic sensor part (0.9 mm in diameter; asterisk), inner tube (1.2 mm in diameter; arrow) and outer tube (1.6 mm in diameter; arrowhead). (D) Flexibility of the guide catheter. Neutral position (asterisks), right- and left-sided bending (arrows), and upward and downward bending (arrowheads).