scholarly journals Imaging of the internal nasal valve using long-range Fourier domain optical coherence tomography

2015 ◽  
Vol 126 (3) ◽  
pp. E97-E102 ◽  
Author(s):  
Anna S. Englhard ◽  
Maximilian Wiedmann ◽  
Georg J. Ledderose ◽  
Bryan Lemieux ◽  
Alan Badran ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Long Range ◽  
Fourier Domain ◽  
Optical Coherence ◽  
Nasal Valve

Coupling Pressure Sensing with Optical Coherence Tomography to Evaluate the Internal Nasal Valve

2020 ◽  
pp. 000348942094419
Author(s):  
Amir A. Hakimi ◽  
Giriraj K. Sharma ◽  
Tuan Ngo ◽  
Andrew E. Heidari ◽  
Christopher D. Badger ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Long Range ◽  
Pressure Sensor ◽  
Cross Sectional Area ◽  
Intraluminal Pressure ◽  
Optical Coherence ◽  
Sectional Area ◽  
Nasal Valve ◽  
Cross Sectional ◽  
Normal Respiration

Purpose: To evaluate endoscopic long-range optical coherence tomography system combined with a pressure sensor to concurrently measure internal nasal valve cross-sectional area and intraluminal pressure. Methods: A pressure sensor was constructed using an Arduino platform and calibrated using a limiter-controlled vacuum system and industrial absolute pressure gauge. Long-range optical coherence tomography imaging and pressure transduction were performed concurrently in the naris of eight healthy adult subjects during normal respiration and forced inspiration. The internal nasal valve was manually segmented using Mimics software and cross-sectional area was measured. Internal nasal valve cross-sectional area measurements were correlated with pressure recordings. Results: Mean cross-sectional area during forced inspiration was 6.49 mm2. The mean change in pressure between normal respiration and forceful inspiration was 12.27 mmHg. The direct correlation between pressure and cross-sectional area as measured by our proposed system was reproducible among subjects. Conclusions: Our results demonstrate a direct correlation between internal nasal valve cross-sectional area and nasal airflow during inspiration cycles. Endoscopic long-range optical coherence tomography coupled with a pressure sensor serves as a useful tool to quantify the dynamic behavior of the internal nasal valve. Level of Evidence: N/A

scholarly journals Long-range Fourier domain optical coherence tomography of the pediatric subglottis

2015 ◽  
Vol 79 (2) ◽  
pp. 119-126 ◽  
Author(s):  
Veronika Volgger ◽  
Giriraj K. Sharma ◽  
Joseph C. Jing ◽  
Ya-Sin A. Peaks ◽  
Anthony Chin Loy ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Long Range ◽  
Fourier Domain ◽  
Optical Coherence

Reliability and Reproducibility of Assessment of Corneal Epithelial Thickness by Fourier Domain Optical Coherence Tomography

2012 ◽  
Vol 53 (6) ◽  
pp. 2580 ◽  
Author(s):  
Gaurav Prakash ◽  
Amar Agarwal ◽  
Anjum Iqbal Mazhari ◽  
Mathangi Chari ◽  
Dhivya Ashok Kumar ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Fourier Domain ◽  
Optical Coherence ◽  
Corneal Epithelial ◽  
Epithelial Thickness ◽  
Corneal Epithelial Thickness

Raman-pumped Fourier-domain mode-locked laser: analysis of operation and application for optical coherence tomography

2008 ◽  
Vol 33 (23) ◽  
pp. 2815 ◽  
Author(s):  
Thomas Klein ◽  
Wolfgang Wieser ◽  
Benjamin R. Biedermann ◽  
Christoph M. Eigenwillig ◽  
Gesa Palte ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Fourier Domain ◽  
Optical Coherence ◽  
Laser Analysis ◽  
Mode Locked Laser
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