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Imaging of the internal nasal valve using long‐range F ourier domain optical coherence tomography
Author(s) -
Englhard Anna S.,
Wiedmann Maximilian,
Ledderose Georg J.,
Lemieux Bryan,
Badran Alan,
Chen Zhongping,
Betz Christian S.,
Wong Brian J.
Publication year - 2016
Publication title -
the laryngoscope
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.181
H-Index - 148
eISSN - 1531-4995
pISSN - 0023-852X
DOI - 10.1002/lary.25785
Subject(s) - optical coherence tomography , nuclear medicine , medicine , endoscope , optics , physics , radiology
Objectives/Hypothesis To evaluate for the first time the feasibility and methodology of long‐range Fourier domain optical coherence tomography (LR‐OCT) imaging of the internal nasal valve (INV) area in healthy individuals. Study Design Prospective individual cohort study. Methods For 16 individuals, OCT was performed in each nare. The angle and the cross‐sectional area of the INV were measured. OCT images were compared to corresponding digital pictures recorded with a flexible endoscope. Results INV angle measured by OCT was found to be 18.3° ± 3.1° (mean ± standard deviation). The cross‐sectional area was 0.65 ± 0.23 cm 2 . The INV angle measured by endoscopy was 18.8° ± 6.9°. There was no statistically significant difference between endoscopy and OCT concerning the mean INV angle ( P = .778), but there was a significant difference in test precision (coefficient of variance 50% vs. 15%; P < .001). Conclusions LR‐OCT proved to be a fast and easily performed method. OCT could accurately quantify the INV area. The values of the angle and the cross‐sectional area of the INV were reproducible and correlated well with the data seen with other methods. Changes in size could be reliably delineated. Endoscopy showed similar values but was significantly less precise. Level of Evidence 2b. Laryngoscope , 126:E97–E102, 2016