Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Non-intrusive optical study of gas and its exchange in human maxillary sinuses

Not Accessible

Your library or personal account may give you access

Abstract

We demonstrate a novel non-intrusive technique based on tunable diode laser absorption spectroscopy to investigate human maxillary sinuses in vivo. The technique relies on the fact that free gases have much sharper absorption features (typical a few GHz) than the surrounding tissue. Molecular oxygen was detected at 760 nm. Volunteers have been investigated by injecting near-infrared light fibre-optically in contact with the palate inside the mouth. The multiply scattered light was detected externally by a handheld probe on and around the cheek bone. A significant signal difference in oxygen imprint was observed when comparing volunteers with widely different anamnesis regarding maxillary sinus status. Control measurements through the hand and through the cheek below the cheekbone were also performed to investigate any possible oxygen offset in the setup. These provided a consistently non-detectable signal level. The passages between the nasal cavity and the maxillary sinuses were also non-intrusively optically studied, to the best of our knowledge for the first time. These measurements provide information on the channel conductivity which may prove useful in facial sinus diagnostics. The results suggest that a clinical trial together with an ear-nose-throat (ENT) clinic should be carried out to investigate the clinical use of the new technique.

© 2007 SPIE

PDF Article
More Like This
Gas Monitoring in Human Body Cavities Using Non-Intrusive Diode Laser Absorption Spectroscopy

Patrik Lundin, Emilie Krite Svanberg, Gabriel Somesfalean, Mahmood Soltanolkotabi, Lorenzo Cocola, Märta Lewander, Stefan Andersson-Engels, John Jahr, Vineta Fellman, Katarina Svanberg, and Sune Svanberg
AS4E.7 Asia Communications and Photonics Conference (ACP) 2012

Methylene Blue Laser Therapy for the Treatment of Chronic Maxillary Sinusitis

Alexey N. Bashkatov, Elina A. Genina, Valery V. Tuchin, Elena E. Chikina, Anatoly B. Knyazev, and Oleg V. Mareev
TuD3 European Conference on Biomedical Optics (ECBO) 2005

Diagnostic Potential of Optical Coherence Tomography in Non-Melanoma Skin Cancer - A Clinical Study

Mette Mogensen, Lars Thrarie, Thomas Martini Jørgensen, and Gregor B.E. Jemec
6627_7 European Conference on Biomedical Optics (ECBO) 2007

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved