Laryngeal imaging with polarization-sensitive optical coherence tomography

James A. Burns; Ki Hean Kim; R. Rox Anderson

doi:10.1117/12.875443

17 February 2011 Laryngeal imaging with polarization-sensitive optical coherence tomography

James A. Burns, Ki Hean Kim, R. Rox Anderson

Proceedings Volume 7883, Photonic Therapeutics and Diagnostics VII; 78832N (2011) https://doi.org/10.1117/12.875443
Event: SPIE BiOS, 2011, San Francisco, California, United States

Abstract

Objectives/Hypothesis: Optical coherence tomography (OCT), an imaging technology that provides crosssectional subsurface tissue structure images using backscattered light, is a promising noninvasive, imaging modality for in-vivo assessment of vocal fold layered microstructure. Polarization-sensitive OCT (PS-OCT) augments conventional OCT by detecting changes in the polarization state of reflected light. This study imaged various benign laryngeal pathologies in patients undergoing direct laryngoscopy under general anesthesia to determine whether PS-OCT would provide useful additional information about vocal fold microstructure and glottic surface pathology. Study Design:Prospective clinical trial. Methods: Eighteen patients who were undergoing microlaryngoscopy under general anesthesia for benign glottic disease were imaged bilaterally with OCT and PS-OCT (N=34 vocal folds). Intraoperative microphotography guided placement of the imaging probe. Normalappearing glottic tissue was also imaged if present. When clinically indicated, biopsy or complete removal of the lesion established histologic confirmation. Results: PS-OCT provided high quality, vertical, cross-sectional images up to 1.2mm deep that complemented microlaryngoscopy, and conventional OCT for vocal fold pathologies. Scar tissue was visualized by PS-OCT, characterized by a birefringence pattern more intense than that of normal glottic tissue. Conclusions: Combining PS-OCT with OCT during human vocal cord imaging provides useful information in characterizing vocal cord lesions, particularly scar tissue.

Citation Download Citation

James A. Burns, Ki Hean Kim, and R. Rox Anderson "Laryngeal imaging with polarization-sensitive optical coherence tomography", Proc. SPIE 7883, Photonic Therapeutics and Diagnostics VII, 78832N (17 February 2011); https://doi.org/10.1117/12.875443

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KEYWORDS

Optical coherence tomography

Tissues

Birefringence

Tissue optics

Polarization

Collagen

Pathology

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